java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_k.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:44:44,987 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:44:44,989 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:44:45,012 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:44:45,013 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:44:45,014 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:44:45,015 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:44:45,018 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:44:45,020 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:44:45,021 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:44:45,022 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:44:45,024 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:44:45,025 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:44:45,027 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:44:45,030 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:44:45,036 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:44:45,037 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:44:45,042 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:44:45,046 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:44:45,051 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:44:45,052 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:44:45,053 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:44:45,060 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:44:45,061 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:44:45,061 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:44:45,062 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:44:45,064 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:44:45,064 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:44:45,065 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:44:45,066 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:44:45,067 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:44:45,067 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:44:45,070 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:44:45,084 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:44:45,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:44:45,085 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:44:45,085 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:44:45,086 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:44:45,086 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:44:45,086 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:44:45,086 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:44:45,152 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:44:45,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:44:45,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:44:45,182 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:44:45,182 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:44:45,183 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_k.i_3.bpl [2018-07-25 08:44:45,184 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_k.i_3.bpl' [2018-07-25 08:44:45,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:44:45,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:44:45,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:44:45,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:44:45,249 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:44:45,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:44:45,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:44:45,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:44:45,292 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:44:45,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:44:45,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:44:45,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:44:45,313 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:44:45,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/1) ... [2018-07-25 08:44:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:44:45,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:44:45,573 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:44:45,576 INFO L202 PluginConnector]: Adding new model count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:44:45 BoogieIcfgContainer [2018-07-25 08:44:45,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:44:45,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:44:45,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:44:45,581 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:44:45,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:45" (1/2) ... [2018-07-25 08:44:45,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f9bd9 and model type count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:44:45, skipping insertion in model container [2018-07-25 08:44:45,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:44:45" (2/2) ... [2018-07-25 08:44:45,585 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_k.i_3.bpl [2018-07-25 08:44:45,595 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:44:45,603 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:44:45,647 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:44:45,648 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:44:45,648 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:44:45,648 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:44:45,648 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:44:45,649 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:44:45,649 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:44:45,649 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:44:45,649 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:44:45,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:44:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:44:45,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:45,671 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:44:45,672 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:45,677 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 08:44:45,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:45,786 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:44:45,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:44:45,791 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:44:45,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:44:45,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:44:45,806 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:44:45,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:45,834 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 08:44:45,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:44:45,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 08:44:45,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:45,847 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:44:45,847 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:44:45,852 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:44:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:44:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:44:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:44:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:44:45,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:44:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:45,894 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:44:45,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:44:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:44:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:44:45,895 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:45,895 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:44:45,896 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-25 08:44:45,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:45,937 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:45,938 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:44:45,941 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:44:45,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:44:45,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:44:45,942 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-25 08:44:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:45,967 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:44:45,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:44:45,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:44:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:45,969 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:44:45,969 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:44:45,972 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:44:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:44:45,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:44:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:44:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:44:45,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:44:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:45,979 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:44:45,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:44:45,981 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:44:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:44:45,982 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:45,982 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:44:45,983 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:45,983 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-25 08:44:45,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:44:46,039 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:44:46,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:44:46,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:44:46,041 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-07-25 08:44:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,117 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:44:46,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:44:46,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:44:46,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,118 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:44:46,119 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:44:46,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:44:46,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:44:46,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:44:46,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:44:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:44:46,124 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 08:44:46,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,125 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:44:46,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:44:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:44:46,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:44:46,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,126 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 08:44:46,126 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-07-25 08:44:46,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:44:46,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:44:46,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:44:46,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:44:46,181 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-07-25 08:44:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,306 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:44:46,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:44:46,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:44:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,307 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:44:46,307 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:44:46,308 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:44:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:44:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:44:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:44:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:44:46,314 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 08:44:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,315 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:44:46,315 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:44:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:44:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:44:46,316 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,317 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 08:44:46,317 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-07-25 08:44:46,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:44:46,406 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:44:46,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:44:46,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:44:46,410 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-07-25 08:44:46,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,494 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:44:46,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:44:46,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:44:46,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,496 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:44:46,496 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:44:46,497 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:44:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:44:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:44:46,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:44:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:44:46,503 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 08:44:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,504 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:44:46,504 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:44:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:44:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:44:46,505 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,505 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 08:44:46,505 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,506 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-07-25 08:44:46,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,587 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:44:46,590 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:44:46,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:44:46,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:44:46,592 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-07-25 08:44:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,733 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:44:46,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:44:46,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:44:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,735 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:44:46,735 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:44:46,739 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:44:46,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:44:46,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:44:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:44:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:44:46,751 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-25 08:44:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,752 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:44:46,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:44:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:44:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:44:46,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,753 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-25 08:44:46,755 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,756 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-07-25 08:44:46,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,818 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:44:46,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:44:46,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:44:46,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:44:46,821 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-07-25 08:44:46,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,910 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:44:46,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:44:46,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:44:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,912 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:44:46,912 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:44:46,913 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:44:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:44:46,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:44:46,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:44:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:44:46,919 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-25 08:44:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,919 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:44:46,920 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:44:46,920 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:44:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:44:46,920 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,921 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-25 08:44:46,921 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,921 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-07-25 08:44:46,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:46,985 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:46,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:44:46,986 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:44:46,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:44:46,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:44:46,989 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-07-25 08:44:47,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,115 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:44:47,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:44:47,117 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:44:47,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,118 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:44:47,118 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:44:47,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:44:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:44:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:44:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:44:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:44:47,127 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-25 08:44:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,128 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:44:47,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:44:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:44:47,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:44:47,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,130 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-25 08:44:47,130 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,131 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-07-25 08:44:47,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:44:47,190 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:44:47,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:44:47,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:44:47,192 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-07-25 08:44:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,301 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:44:47,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:44:47,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 08:44:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,303 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:44:47,303 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:44:47,304 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:44:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:44:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:44:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:44:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:44:47,310 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-25 08:44:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,311 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:44:47,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:44:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:44:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:44:47,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,312 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-25 08:44:47,313 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-07-25 08:44:47,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,377 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:44:47,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:44:47,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:44:47,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:44:47,379 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-07-25 08:44:47,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,527 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:44:47,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:44:47,527 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:44:47,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,528 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:44:47,528 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:44:47,529 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:44:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:44:47,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:44:47,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:44:47,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:44:47,540 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-25 08:44:47,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,540 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:44:47,540 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:44:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:44:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:44:47,541 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,542 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-25 08:44:47,542 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-07-25 08:44:47,542 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:44:47,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:44:47,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:44:47,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:44:47,630 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-07-25 08:44:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:47,788 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:44:47,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:44:47,788 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-25 08:44:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:47,789 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:44:47,789 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:44:47,790 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:44:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:44:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:44:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:44:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:44:47,802 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-25 08:44:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:47,802 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:44:47,803 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:44:47,803 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:44:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:44:47,804 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:47,804 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-25 08:44:47,804 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:47,806 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-07-25 08:44:47,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:44:47,878 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:44:47,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:44:47,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:44:47,879 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-07-25 08:44:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,036 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:44:48,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:44:48,037 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:44:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,038 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:44:48,038 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:44:48,041 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:44:48,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:44:48,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:44:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:44:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:44:48,050 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-25 08:44:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,050 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:44:48,051 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:44:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:44:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:44:48,052 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,052 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-25 08:44:48,053 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-07-25 08:44:48,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:44:48,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:44:48,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:44:48,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:44:48,127 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-07-25 08:44:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,311 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:44:48,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:44:48,312 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-25 08:44:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,313 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:44:48,313 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:44:48,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:44:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:44:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:44:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:44:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:44:48,325 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-25 08:44:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,326 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:44:48,326 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:44:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:44:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:44:48,327 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,332 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-25 08:44:48,333 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-07-25 08:44:48,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:44:48,441 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:44:48,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:44:48,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:44:48,442 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-07-25 08:44:48,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,705 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:44:48,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:44:48,708 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:44:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,709 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:44:48,709 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:44:48,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:44:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:44:48,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:44:48,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:44:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:44:48,721 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-25 08:44:48,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,721 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:44:48,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:44:48,722 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:44:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:44:48,724 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,725 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-25 08:44:48,725 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,725 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-07-25 08:44:48,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:48,846 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:48,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:44:48,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:44:48,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:44:48,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:44:48,848 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-07-25 08:44:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,112 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:44:49,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:44:49,112 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-25 08:44:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,113 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:44:49,114 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:44:49,115 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:44:49,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:44:49,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:44:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:44:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:44:49,125 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-25 08:44:49,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,125 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:44:49,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:44:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:44:49,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:44:49,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,126 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-25 08:44:49,127 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,127 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-07-25 08:44:49,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,233 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,233 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:44:49,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:44:49,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:44:49,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:44:49,235 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-07-25 08:44:49,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:49,562 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:44:49,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:44:49,562 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:44:49,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:49,563 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:44:49,563 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:44:49,565 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:44:49,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:44:49,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:44:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:44:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:44:49,576 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-25 08:44:49,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:49,576 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:44:49,577 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:44:49,577 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:44:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:44:49,578 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:49,578 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-25 08:44:49,579 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:49,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-07-25 08:44:49,579 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:44:49,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:44:49,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:44:49,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:44:49,704 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-07-25 08:44:50,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,020 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:44:50,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:44:50,020 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-25 08:44:50,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,021 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:44:50,021 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:44:50,022 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:44:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:44:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:44:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:44:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:44:50,029 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-25 08:44:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,029 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:44:50,030 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:44:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:44:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:44:50,030 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,031 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-25 08:44:50,031 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,031 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-07-25 08:44:50,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,139 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:44:50,140 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:44:50,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:44:50,140 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:44:50,141 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-07-25 08:44:50,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,472 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:44:50,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:44:50,473 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:44:50,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,475 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:44:50,476 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:44:50,477 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:44:50,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:44:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:44:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:44:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:44:50,488 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-25 08:44:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,489 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:44:50,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:44:50,489 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:44:50,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:44:50,493 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,494 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-25 08:44:50,494 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-07-25 08:44:50,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:44:50,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:44:50,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:44:50,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:44:50,631 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-07-25 08:44:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:50,973 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:44:50,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:44:50,973 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-25 08:44:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:50,974 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:44:50,974 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:44:50,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:44:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:44:50,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:44:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:44:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:44:50,985 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-25 08:44:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:50,985 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:44:50,986 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:44:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:44:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:44:50,988 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:50,988 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-25 08:44:50,988 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:50,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-07-25 08:44:50,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:51,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:51,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:44:51,141 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:44:51,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:44:51,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:44:51,142 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-07-25 08:44:51,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:51,501 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:44:51,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:44:51,501 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:44:51,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:51,502 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:44:51,502 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:44:51,504 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:44:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:44:51,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:44:51,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:44:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:44:51,516 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-25 08:44:51,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:51,517 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:44:51,517 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:44:51,517 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:44:51,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:44:51,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:51,518 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-25 08:44:51,518 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:51,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-07-25 08:44:51,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:51,660 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:51,660 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:44:51,661 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:44:51,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:44:51,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:44:51,662 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-07-25 08:44:52,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,121 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:44:52,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:44:52,121 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-25 08:44:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,122 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:44:52,122 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:44:52,124 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:44:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:44:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:44:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:44:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:44:52,132 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-25 08:44:52,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,132 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:44:52,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:44:52,132 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:44:52,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:44:52,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,133 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-25 08:44:52,134 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-07-25 08:44:52,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:52,276 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:52,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:44:52,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:44:52,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:44:52,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:44:52,278 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-07-25 08:44:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,710 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:44:52,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:44:52,710 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:44:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,711 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:44:52,711 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:44:52,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:44:52,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:44:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:44:52,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:44:52,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:44:52,720 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-25 08:44:52,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,720 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:44:52,720 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:44:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:44:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:44:52,721 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,721 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-25 08:44:52,721 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-07-25 08:44:52,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:52,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:52,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:44:52,875 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:44:52,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:44:52,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:44:52,877 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-07-25 08:44:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:53,360 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:44:53,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:44:53,360 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-25 08:44:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:53,361 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:44:53,361 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:44:53,363 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:44:53,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:44:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:44:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:44:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:44:53,370 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-25 08:44:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:53,371 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:44:53,371 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:44:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:44:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:44:53,371 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:53,372 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-25 08:44:53,372 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:53,372 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-07-25 08:44:53,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:53,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:53,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:44:53,533 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:44:53,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:44:53,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:44:53,534 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-07-25 08:44:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:54,043 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:44:54,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:44:54,043 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:44:54,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:54,044 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:44:54,044 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:44:54,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:44:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:44:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:44:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:44:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:44:54,053 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-25 08:44:54,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:54,053 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:44:54,053 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:44:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:44:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:44:54,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:54,054 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-25 08:44:54,054 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:54,055 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-07-25 08:44:54,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:54,255 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:54,255 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:44:54,256 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:44:54,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:44:54,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:44:54,257 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-07-25 08:44:54,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:54,866 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:44:54,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:44:54,867 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-25 08:44:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:54,867 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:44:54,867 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:44:54,869 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:44:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:44:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:44:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:44:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:44:54,876 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-25 08:44:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:54,876 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:44:54,876 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:44:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:44:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:44:54,877 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:54,877 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-25 08:44:54,877 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:54,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-07-25 08:44:54,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:55,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:55,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:44:55,056 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:44:55,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:44:55,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:44:55,058 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-07-25 08:44:55,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:55,677 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:44:55,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:44:55,678 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:44:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:55,678 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:44:55,679 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:44:55,684 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:44:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:44:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:44:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:44:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:44:55,693 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-25 08:44:55,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:55,693 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:44:55,694 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:44:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:44:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:44:55,694 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:55,694 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-25 08:44:55,695 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:55,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-07-25 08:44:55,695 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:55,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:55,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:44:55,908 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:44:55,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:44:55,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:44:55,909 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-07-25 08:44:56,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:56,559 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:44:56,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:44:56,559 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-25 08:44:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:56,560 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:44:56,560 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:44:56,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:44:56,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:44:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:44:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:44:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:44:56,573 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-25 08:44:56,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:56,573 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:44:56,574 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:44:56,574 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:44:56,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:44:56,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:56,574 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-25 08:44:56,575 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:56,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-07-25 08:44:56,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:56,810 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:56,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:44:56,810 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:44:56,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:44:56,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:44:56,811 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-07-25 08:44:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:57,587 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:44:57,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:44:57,587 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:44:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:57,588 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:44:57,588 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:44:57,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:44:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:44:57,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:44:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:44:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:44:57,598 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-25 08:44:57,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:57,598 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:44:57,598 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:44:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:44:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:44:57,599 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:57,599 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-25 08:44:57,599 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:57,600 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-07-25 08:44:57,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:57,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:57,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:44:57,829 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:44:57,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:44:57,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:44:57,831 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-07-25 08:44:58,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:58,563 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:44:58,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:44:58,563 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-25 08:44:58,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:58,564 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:44:58,564 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:44:58,566 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:44:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:44:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:44:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:44:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:44:58,574 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-25 08:44:58,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:58,575 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:44:58,575 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:44:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:44:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:44:58,576 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:58,576 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-25 08:44:58,576 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:58,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-07-25 08:44:58,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:58,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:58,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:44:58,830 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:44:58,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:44:58,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:44:58,831 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-07-25 08:44:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:59,625 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:44:59,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:44:59,626 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:44:59,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:59,627 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:44:59,627 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:44:59,629 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:44:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:44:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:44:59,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:44:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:44:59,636 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-25 08:44:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:59,637 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:44:59,637 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:44:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:44:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:44:59,638 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:59,638 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-25 08:44:59,638 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:59,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-07-25 08:44:59,638 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:59,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:59,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:44:59,879 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:44:59,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:44:59,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:44:59,880 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-07-25 08:45:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:00,693 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:45:00,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:45:00,694 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-25 08:45:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:00,694 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:45:00,695 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:45:00,697 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:45:00,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:45:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:45:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:45:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:45:00,705 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-25 08:45:00,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:00,705 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:45:00,705 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:45:00,705 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:45:00,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:45:00,706 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:00,706 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-25 08:45:00,706 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:00,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-07-25 08:45:00,707 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:00,953 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:00,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:45:00,954 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:45:00,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:45:00,956 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:45:00,956 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-07-25 08:45:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:01,822 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:45:01,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:45:01,822 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:45:01,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:01,823 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:45:01,823 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:45:01,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:45:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:45:01,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:45:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:45:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:45:01,835 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-25 08:45:01,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:01,836 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:45:01,836 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:45:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:45:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:45:01,837 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:01,837 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-25 08:45:01,837 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:01,838 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-07-25 08:45:01,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:02,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:02,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:45:02,097 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:45:02,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:45:02,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:45:02,101 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-07-25 08:45:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:03,061 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:45:03,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:45:03,061 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-25 08:45:03,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:03,062 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:45:03,063 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:45:03,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:45:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:45:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:45:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:45:03,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:45:03,073 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-25 08:45:03,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:03,073 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:45:03,074 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:45:03,074 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:45:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:45:03,075 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:03,075 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-25 08:45:03,075 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-07-25 08:45:03,076 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:03,327 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:03,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:45:03,328 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:45:03,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:45:03,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:45:03,329 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-07-25 08:45:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:04,283 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:45:04,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:45:04,284 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:45:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:04,285 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:45:04,285 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:45:04,286 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:45:04,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:45:04,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:45:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:45:04,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:45:04,295 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-25 08:45:04,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:04,295 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:45:04,295 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:45:04,296 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:45:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:45:04,296 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:04,296 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-25 08:45:04,297 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:04,297 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-07-25 08:45:04,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:04,570 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:04,570 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:45:04,570 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:45:04,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:45:04,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:45:04,571 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-07-25 08:45:05,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:05,558 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:45:05,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:45:05,558 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-25 08:45:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:05,559 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:45:05,559 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:45:05,560 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1295, Invalid=3675, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:45:05,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:45:05,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:45:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:45:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:45:05,569 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-25 08:45:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:05,570 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:45:05,570 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:45:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:45:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:45:05,571 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:05,571 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-25 08:45:05,571 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:05,571 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-07-25 08:45:05,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:05,835 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:05,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:45:05,835 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:45:05,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:45:05,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:45:05,836 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-07-25 08:45:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:06,833 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:45:06,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:45:06,833 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:45:06,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:06,834 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:45:06,834 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:45:06,836 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:45:06,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:45:06,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:45:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:45:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:45:06,843 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-25 08:45:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:06,843 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:45:06,844 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:45:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:45:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:45:06,844 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:06,845 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-25 08:45:06,845 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:06,845 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-07-25 08:45:06,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:07,111 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:07,111 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:45:07,111 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:45:07,112 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:45:07,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:45:07,112 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-07-25 08:45:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:08,323 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:45:08,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:45:08,324 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-25 08:45:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:08,324 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:45:08,325 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:45:08,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:45:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:45:08,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:45:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:45:08,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:45:08,333 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-25 08:45:08,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:08,334 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:45:08,334 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:45:08,334 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:45:08,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:45:08,335 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:08,335 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-25 08:45:08,335 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:08,335 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-07-25 08:45:08,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:08,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:08,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:45:08,602 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:45:08,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:45:08,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:45:08,603 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-07-25 08:45:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:09,693 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:45:09,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:45:09,693 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:45:09,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:09,694 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:45:09,694 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:45:09,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1520, Invalid=4332, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:45:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:45:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:45:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:45:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:45:09,702 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-25 08:45:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:09,703 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:45:09,703 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:45:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:45:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:45:09,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:09,704 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-25 08:45:09,704 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:09,704 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-07-25 08:45:09,704 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:09,993 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:09,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:45:09,993 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:45:09,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:45:09,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:45:09,994 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-07-25 08:45:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:11,214 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:45:11,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:45:11,214 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-25 08:45:11,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:11,215 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:45:11,215 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:45:11,216 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:45:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:45:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:45:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:45:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:45:11,225 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-25 08:45:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:11,225 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:45:11,225 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:45:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:45:11,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:45:11,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:11,227 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-25 08:45:11,227 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:11,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-07-25 08:45:11,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:11,506 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:11,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:45:11,506 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:45:11,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:45:11,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:45:11,507 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-07-25 08:45:12,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:12,714 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:45:12,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:45:12,715 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:45:12,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:12,716 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:45:12,716 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:45:12,717 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:45:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:45:12,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:45:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:45:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:45:12,725 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-25 08:45:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:12,725 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:45:12,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:45:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:45:12,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:45:12,726 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:12,727 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-25 08:45:12,727 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:12,727 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-07-25 08:45:12,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:13,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:45:13,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:45:13,017 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:45:13,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:45:13,018 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-07-25 08:45:14,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,285 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:45:14,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:45:14,285 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-25 08:45:14,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,286 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:45:14,286 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:45:14,288 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1763, Invalid=5043, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:45:14,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:45:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:45:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:45:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:45:14,296 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-25 08:45:14,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,297 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:45:14,297 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:45:14,297 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:45:14,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:45:14,298 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,298 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-25 08:45:14,298 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-07-25 08:45:14,299 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:14,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:14,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:45:14,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:45:14,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:45:14,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:45:14,622 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-07-25 08:45:15,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:15,743 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:45:15,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:45:15,743 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:45:15,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:15,744 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:45:15,744 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:45:15,745 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1848, Invalid=5292, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:45:15,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:45:15,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:45:15,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:45:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:45:15,752 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-25 08:45:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:15,753 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:45:15,753 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:45:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:45:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:45:15,754 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:15,754 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-25 08:45:15,754 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:15,754 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-07-25 08:45:15,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:16,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:16,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:45:16,058 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:45:16,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:45:16,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:45:16,059 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-07-25 08:45:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:17,101 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:45:17,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:45:17,101 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-25 08:45:17,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:17,102 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:45:17,102 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:45:17,103 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1935, Invalid=5547, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:45:17,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:45:17,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:45:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:45:17,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:45:17,113 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-25 08:45:17,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:17,113 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:45:17,113 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:45:17,113 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:45:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:45:17,114 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:17,114 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-25 08:45:17,115 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:17,115 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-07-25 08:45:17,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:17,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:17,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:45:17,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:45:17,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:45:17,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:45:17,380 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-07-25 08:45:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:18,925 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:45:18,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:45:18,925 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:45:18,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:18,926 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:45:18,926 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:45:18,927 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2024, Invalid=5808, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:45:18,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:45:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:45:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:45:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:45:18,935 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-25 08:45:18,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:18,935 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:45:18,935 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:45:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:45:18,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:45:18,936 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:18,936 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-25 08:45:18,937 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:18,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-07-25 08:45:18,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:19,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:19,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:45:19,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:45:19,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:45:19,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:45:19,258 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-07-25 08:45:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:20,671 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:45:20,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:45:20,671 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-25 08:45:20,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:20,674 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:45:20,674 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:45:20,675 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2115, Invalid=6075, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:45:20,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:45:20,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:45:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:45:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:45:20,689 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-25 08:45:20,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:20,690 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:45:20,690 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:45:20,690 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:45:20,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:45:20,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:20,691 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-25 08:45:20,691 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:20,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-07-25 08:45:20,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:20,978 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:20,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:45:20,978 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:45:20,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:45:20,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:45:20,979 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-07-25 08:45:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:22,151 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:45:22,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:45:22,151 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:45:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:22,152 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:45:22,152 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:45:22,153 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2208, Invalid=6348, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:45:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:45:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:45:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:45:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:45:22,161 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-25 08:45:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:22,161 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:45:22,161 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:45:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:45:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:45:22,162 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:22,162 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-25 08:45:22,163 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:22,163 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-07-25 08:45:22,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:22,525 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:22,526 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:45:22,526 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:45:22,526 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:45:22,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:45:22,527 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-07-25 08:45:23,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:23,741 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:45:23,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:45:23,741 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-25 08:45:23,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:23,742 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:45:23,742 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:45:23,743 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2303, Invalid=6627, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:45:23,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:45:23,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:45:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:45:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:45:23,751 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-25 08:45:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:23,751 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:45:23,751 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:45:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:45:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:45:23,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:23,752 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-25 08:45:23,752 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:23,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-07-25 08:45:23,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:24,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:24,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:45:24,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:45:24,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:45:24,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:45:24,090 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-07-25 08:45:25,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:25,332 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:45:25,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:45:25,332 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:45:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:25,333 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:45:25,333 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:45:25,334 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2400, Invalid=6912, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:45:25,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:45:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:45:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:45:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:45:25,342 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-25 08:45:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:25,342 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:45:25,342 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:45:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:45:25,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:45:25,343 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:25,344 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-25 08:45:25,344 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:25,344 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-07-25 08:45:25,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:25,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:25,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:45:25,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:45:25,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:45:25,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:45:25,616 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-07-25 08:45:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:27,062 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:45:27,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:45:27,062 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-25 08:45:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:27,063 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:45:27,063 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:45:27,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2499, Invalid=7203, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:45:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:45:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:45:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:45:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:45:27,071 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-25 08:45:27,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:27,072 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:45:27,072 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:45:27,072 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:45:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:45:27,073 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:27,073 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-25 08:45:27,073 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:27,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-07-25 08:45:27,073 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:27,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:27,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:45:27,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:45:27,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:45:27,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:45:27,379 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-07-25 08:45:28,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:28,836 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:45:28,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:45:28,836 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:45:28,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:28,837 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:45:28,837 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:45:28,838 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2600, Invalid=7500, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:45:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:45:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:45:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:45:28,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:45:28,846 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-25 08:45:28,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:28,846 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:45:28,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:45:28,847 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:45:28,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:45:28,847 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:28,847 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-25 08:45:28,848 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:28,848 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-07-25 08:45:28,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:29,170 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:29,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:45:29,171 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:45:29,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:45:29,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:45:29,172 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-07-25 08:45:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:30,962 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:45:30,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:45:30,963 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-25 08:45:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:30,963 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:45:30,964 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:45:30,965 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2703, Invalid=7803, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:45:30,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:45:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:45:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:45:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:45:30,973 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-25 08:45:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:30,973 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:45:30,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:45:30,973 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:45:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:45:30,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:30,974 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-25 08:45:30,974 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:30,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-07-25 08:45:30,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:31,281 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:31,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:45:31,282 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:45:31,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:45:31,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:45:31,282 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-07-25 08:45:32,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:32,949 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:45:32,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:45:32,949 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:45:32,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:32,950 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:45:32,950 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:45:32,951 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2808, Invalid=8112, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:45:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:45:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:45:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:45:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:45:32,959 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-25 08:45:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:32,960 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:45:32,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:45:32,960 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:45:32,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:45:32,960 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:32,961 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-25 08:45:32,961 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:32,961 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-07-25 08:45:32,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:33,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:33,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:45:33,275 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:45:33,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:45:33,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:45:33,275 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-07-25 08:45:34,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:34,993 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:45:34,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:45:34,994 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-25 08:45:34,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:34,994 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:45:34,994 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:45:34,995 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2915, Invalid=8427, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:45:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:45:35,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:45:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:45:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:45:35,004 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-25 08:45:35,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:35,005 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:45:35,005 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:45:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:45:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:45:35,005 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:35,006 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-25 08:45:35,006 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:35,006 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-07-25 08:45:35,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:35,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:35,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:45:35,346 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:45:35,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:45:35,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:45:35,346 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-07-25 08:45:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:37,240 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:45:37,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:45:37,240 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:45:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:37,241 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:45:37,241 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:45:37,242 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3024, Invalid=8748, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:45:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:45:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:45:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:45:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:45:37,250 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-25 08:45:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:37,250 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:45:37,250 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:45:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:45:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:45:37,251 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:37,251 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-25 08:45:37,251 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:37,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-07-25 08:45:37,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:37,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:37,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:45:37,629 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:45:37,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:45:37,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:45:37,630 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-07-25 08:45:39,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:39,404 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:45:39,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:45:39,404 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-25 08:45:39,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:39,405 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:45:39,406 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:45:39,406 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3135, Invalid=9075, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:45:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:45:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:45:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:45:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:45:39,413 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-25 08:45:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:39,414 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:45:39,414 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:45:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:45:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:45:39,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:39,415 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-25 08:45:39,415 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:39,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-07-25 08:45:39,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:39,756 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:39,756 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:45:39,756 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:45:39,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:45:39,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:45:39,757 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-07-25 08:45:41,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:41,699 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:45:41,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:45:41,700 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:45:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:41,700 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:45:41,700 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:45:41,701 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3248, Invalid=9408, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:45:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:45:41,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:45:41,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:45:41,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:45:41,710 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-25 08:45:41,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:41,710 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:45:41,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:45:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:45:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:45:41,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:41,711 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-25 08:45:41,712 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:41,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-07-25 08:45:41,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:42,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:42,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:45:42,212 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:45:42,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:45:42,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:45:42,213 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-07-25 08:45:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,328 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:45:44,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:45:44,328 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-25 08:45:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,329 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:45:44,329 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:45:44,330 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3363, Invalid=9747, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:45:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:45:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:45:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:45:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:45:44,338 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-25 08:45:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,339 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:45:44,339 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:45:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:45:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:45:44,339 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,340 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-25 08:45:44,340 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,340 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-07-25 08:45:44,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,730 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:45:44,730 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:45:44,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:45:44,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:45:44,731 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-07-25 08:45:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:46,966 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:45:46,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:45:46,967 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:45:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:46,967 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:45:46,967 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:45:46,968 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3480, Invalid=10092, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:45:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:45:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:45:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:45:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:45:46,974 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-25 08:45:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:46,974 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:45:46,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:45:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:45:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:45:46,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:46,974 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-25 08:45:46,975 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:46,975 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-07-25 08:45:46,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:47,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:47,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:45:47,331 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:45:47,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:45:47,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:45:47,332 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-07-25 08:45:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:49,476 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:45:49,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:45:49,476 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-25 08:45:49,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:49,477 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:45:49,477 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:45:49,477 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3599, Invalid=10443, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:45:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:45:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:45:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:45:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:45:49,485 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-25 08:45:49,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:49,486 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:45:49,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:45:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:45:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:45:49,487 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:49,487 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-25 08:45:49,487 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-07-25 08:45:49,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:49,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:49,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:45:49,883 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:45:49,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:45:49,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:45:49,884 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-07-25 08:45:52,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:52,209 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:45:52,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:45:52,209 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:45:52,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:52,210 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:45:52,211 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:45:52,211 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3720, Invalid=10800, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:45:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:45:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:45:52,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:45:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:45:52,220 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-25 08:45:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:52,220 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:45:52,220 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:45:52,220 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:45:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:45:52,221 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:52,221 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-25 08:45:52,222 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:52,222 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-07-25 08:45:52,222 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:52,640 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:52,640 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:45:52,641 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:45:52,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:45:52,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:45:52,641 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-07-25 08:45:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:55,001 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:45:55,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:45:55,001 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-25 08:45:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:55,002 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:45:55,002 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:45:55,004 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3843, Invalid=11163, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:45:55,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:45:55,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:45:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:45:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:45:55,010 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-25 08:45:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:55,010 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:45:55,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:45:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:45:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:45:55,011 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:55,012 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-25 08:45:55,012 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:55,012 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-07-25 08:45:55,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:55,448 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:55,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:45:55,449 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:45:55,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:45:55,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:45:55,449 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-07-25 08:45:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:58,091 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:45:58,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:45:58,091 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:45:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:58,092 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:45:58,092 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:45:58,093 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3968, Invalid=11532, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:45:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:45:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:45:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:45:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:45:58,107 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-25 08:45:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:58,108 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:45:58,108 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:45:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:45:58,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:45:58,109 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:58,109 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-25 08:45:58,109 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:58,109 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-07-25 08:45:58,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:58,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:58,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:45:58,624 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:45:58,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:45:58,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:45:58,625 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-07-25 08:46:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:01,318 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:46:01,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:46:01,319 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-25 08:46:01,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:01,320 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:46:01,320 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:46:01,321 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4095, Invalid=11907, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:46:01,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:46:01,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:46:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:46:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:46:01,333 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-25 08:46:01,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:01,334 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:46:01,334 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:46:01,334 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:46:01,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:46:01,335 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:01,335 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-25 08:46:01,335 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:01,335 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-07-25 08:46:01,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:01,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:01,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:46:01,797 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:46:01,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:46:01,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:46:01,798 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-07-25 08:46:04,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:04,380 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:46:04,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:46:04,380 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:46:04,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:04,381 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:46:04,382 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:46:04,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4224, Invalid=12288, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:46:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:46:04,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:46:04,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:46:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:46:04,393 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-25 08:46:04,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:04,393 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:46:04,393 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:46:04,393 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:46:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:46:04,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:04,394 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-25 08:46:04,394 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:04,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-07-25 08:46:04,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:04,966 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:04,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:46:04,966 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:46:04,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:46:04,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:46:04,967 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-07-25 08:46:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:07,833 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:46:07,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:46:07,833 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-25 08:46:07,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:07,834 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:46:07,834 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:46:07,835 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4355, Invalid=12675, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:46:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:46:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:46:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:46:07,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:46:07,844 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-25 08:46:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:07,844 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:46:07,845 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:46:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:46:07,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:46:07,845 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:07,845 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-25 08:46:07,845 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:07,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-07-25 08:46:07,846 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:08,325 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:08,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:46:08,325 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:46:08,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:46:08,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:46:08,326 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-07-25 08:46:11,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:11,160 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:46:11,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:46:11,160 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:46:11,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:11,162 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:46:11,162 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:46:11,163 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4488, Invalid=13068, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:46:11,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:46:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:46:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:46:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:46:11,173 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-25 08:46:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:11,173 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:46:11,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:46:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:46:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:46:11,174 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:11,174 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-25 08:46:11,174 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:11,175 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-07-25 08:46:11,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:11,700 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:11,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:46:11,701 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:46:11,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:46:11,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:46:11,702 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-07-25 08:46:14,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:14,855 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:46:14,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:46:14,856 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-25 08:46:14,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:14,856 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:46:14,857 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:46:14,858 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4623, Invalid=13467, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:46:14,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:46:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:46:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:46:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:46:14,867 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-25 08:46:14,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:14,867 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:46:14,867 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:46:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:46:14,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:46:14,868 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:14,868 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-25 08:46:14,868 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:14,869 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-07-25 08:46:14,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:15,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:15,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:46:15,447 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:46:15,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:46:15,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:46:15,448 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-07-25 08:46:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:18,859 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:46:18,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:46:18,859 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:46:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:18,860 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:46:18,861 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:46:18,862 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2211 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4760, Invalid=13872, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:46:18,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:46:18,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:46:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:46:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:46:18,872 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-25 08:46:18,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:18,872 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:46:18,872 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:46:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:46:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:46:18,873 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:18,874 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-25 08:46:18,874 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:18,874 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-07-25 08:46:18,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:19,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:19,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:46:19,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:46:19,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:46:19,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:46:19,489 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-07-25 08:46:22,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:22,785 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:46:22,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:46:22,785 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-25 08:46:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:22,786 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:46:22,786 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:46:22,787 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2278 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4899, Invalid=14283, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:46:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:46:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:46:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:46:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:46:22,793 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-25 08:46:22,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:22,793 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:46:22,793 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:46:22,793 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:46:22,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:46:22,794 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:22,794 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-25 08:46:22,794 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:22,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-07-25 08:46:22,794 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:23,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:23,380 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:46:23,380 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:46:23,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:46:23,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:46:23,381 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-07-25 08:46:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:26,839 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:46:26,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:46:26,839 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:46:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:26,840 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:46:26,840 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:46:26,841 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5040, Invalid=14700, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:46:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:46:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:46:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:46:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:46:26,851 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-25 08:46:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:26,851 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:46:26,851 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:46:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:46:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:46:26,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:26,852 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-25 08:46:26,852 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:26,852 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-07-25 08:46:26,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:27,491 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:27,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:46:27,491 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:46:27,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:46:27,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:46:27,492 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-07-25 08:46:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:31,514 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:46:31,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:46:31,514 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-25 08:46:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:31,515 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:46:31,515 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:46:31,516 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2415 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5183, Invalid=15123, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:46:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:46:31,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:46:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:46:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:46:31,526 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-25 08:46:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:31,527 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:46:31,527 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:46:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:46:31,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:46:31,528 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:31,528 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-25 08:46:31,528 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:31,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-07-25 08:46:31,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:32,197 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:32,197 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:46:32,197 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:46:32,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:46:32,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:46:32,198 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-07-25 08:46:36,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:36,273 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:46:36,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:46:36,273 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:46:36,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:36,274 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:46:36,274 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:46:36,275 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2485 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5328, Invalid=15552, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:46:36,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:46:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:46:36,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:46:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:46:36,285 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-25 08:46:36,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:36,285 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:46:36,285 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:46:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:46:36,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:46:36,286 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:36,287 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-25 08:46:36,287 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:36,287 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-07-25 08:46:36,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:36,919 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:36,919 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:46:36,919 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:46:36,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:46:36,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:46:36,920 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-07-25 08:46:40,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:40,549 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:46:40,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:46:40,549 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-25 08:46:40,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:40,550 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:46:40,551 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:46:40,552 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5475, Invalid=15987, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:46:40,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:46:40,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:46:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:46:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:46:40,561 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-25 08:46:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:40,562 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:46:40,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:46:40,562 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:46:40,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:46:40,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:40,563 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-25 08:46:40,563 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:40,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-07-25 08:46:40,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:41,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:41,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:46:41,231 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:46:41,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:46:41,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:46:41,232 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-07-25 08:46:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:45,182 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:46:45,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:46:45,183 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:46:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:45,184 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:46:45,184 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:46:45,185 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5624, Invalid=16428, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:46:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:46:45,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:46:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:46:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:46:45,195 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-25 08:46:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:45,196 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:46:45,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:46:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:46:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:46:45,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:45,197 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-25 08:46:45,197 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:45,197 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-07-25 08:46:45,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:46,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:46,094 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:46:46,094 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:46:46,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:46:46,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:46:46,095 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-07-25 08:46:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:50,413 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:46:50,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:46:50,413 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-25 08:46:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:50,414 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:46:50,414 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:46:50,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2701 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5775, Invalid=16875, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:46:50,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:46:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:46:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:46:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:46:50,421 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-25 08:46:50,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:50,421 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:46:50,421 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:46:50,421 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:46:50,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:46:50,422 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:50,422 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-25 08:46:50,423 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:50,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-07-25 08:46:50,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:51,185 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:51,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:46:51,186 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:46:51,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:46:51,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:46:51,186 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-07-25 08:46:55,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:55,755 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:46:55,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:46:55,755 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:46:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:55,756 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:46:55,756 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:46:55,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2775 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5928, Invalid=17328, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:46:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:46:55,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:46:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:46:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:46:55,767 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-25 08:46:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:55,767 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:46:55,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:46:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:46:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:46:55,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:55,768 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-25 08:46:55,769 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:55,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-07-25 08:46:55,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:56,659 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:56,660 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:46:56,660 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:46:56,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:46:56,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:46:56,661 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-07-25 08:47:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:01,321 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:47:01,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:47:01,321 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-25 08:47:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:01,322 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:47:01,322 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:47:01,323 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6083, Invalid=17787, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:47:01,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:47:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:47:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:47:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:47:01,331 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-25 08:47:01,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:01,332 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:47:01,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:47:01,332 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:47:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:47:01,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:01,333 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-25 08:47:01,333 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:01,333 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-07-25 08:47:01,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:02,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:02,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:47:02,164 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:47:02,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:47:02,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:47:02,165 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-07-25 08:47:07,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:07,265 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:47:07,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:47:07,266 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:47:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:07,266 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:47:07,267 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:47:07,268 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=6240, Invalid=18252, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:47:07,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:47:07,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:47:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:47:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:47:07,275 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-25 08:47:07,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:07,275 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:47:07,276 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:47:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:47:07,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:47:07,276 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:07,276 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-25 08:47:07,277 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:07,277 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-07-25 08:47:07,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:08,111 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:08,111 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:47:08,112 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:47:08,112 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:47:08,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:47:08,112 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-07-25 08:47:13,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:13,302 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:47:13,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:47:13,303 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-25 08:47:13,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:13,304 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:47:13,304 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:47:13,305 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3003 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=6399, Invalid=18723, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:47:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:47:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:47:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:47:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:47:13,312 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-25 08:47:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:13,313 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:47:13,313 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:47:13,313 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:47:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:47:13,314 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:13,314 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-25 08:47:13,314 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:13,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-07-25 08:47:13,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:14,201 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:14,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:47:14,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:47:14,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:47:14,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:47:14,202 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-07-25 08:47:19,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:19,565 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:47:19,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:47:19,566 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:47:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:19,567 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:47:19,567 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:47:19,568 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3081 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=6560, Invalid=19200, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:47:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:47:19,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:47:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:47:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:47:19,577 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-25 08:47:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:19,577 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:47:19,577 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:47:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:47:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:47:19,578 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:19,578 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-25 08:47:19,578 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:19,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-07-25 08:47:19,578 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:20,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:20,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:47:20,435 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:47:20,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:47:20,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:47:20,436 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-07-25 08:47:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,981 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:47:25,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:47:25,981 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-25 08:47:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,982 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:47:25,982 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:47:25,983 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6723, Invalid=19683, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:47:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:47:25,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:47:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:47:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:47:25,991 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-25 08:47:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,992 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:47:25,992 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:47:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:47:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:47:25,992 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,992 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-25 08:47:25,993 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-07-25 08:47:25,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:26,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:26,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:47:26,898 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:47:26,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:47:26,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:47:26,899 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-07-25 08:47:32,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:32,684 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:47:32,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:47:32,684 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:47:32,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:32,685 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:47:32,685 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:47:32,686 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3240 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=6888, Invalid=20172, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:47:32,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:47:32,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:47:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:47:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:47:32,694 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-25 08:47:32,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:32,694 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:47:32,694 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:47:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:47:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:47:32,695 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:32,695 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-25 08:47:32,695 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:32,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-07-25 08:47:32,696 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:33,591 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:33,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:47:33,592 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:47:33,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:47:33,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:47:33,593 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-07-25 08:47:38,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:38,976 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:47:38,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:47:38,977 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-25 08:47:38,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:38,978 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:47:38,978 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:47:38,979 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=7055, Invalid=20667, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:47:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:47:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:47:38,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:47:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:47:38,989 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-25 08:47:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:38,989 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:47:38,989 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:47:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:47:38,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:47:38,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:38,990 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-25 08:47:38,990 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:38,991 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-07-25 08:47:38,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:39,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:47:39,888 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:47:39,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:47:39,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:47:39,888 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-07-25 08:47:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:45,541 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:47:45,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:47:45,541 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:47:45,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:45,542 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:47:45,542 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:47:45,543 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3403 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=7224, Invalid=21168, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:47:45,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:47:45,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:47:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:47:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:47:45,553 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-25 08:47:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:45,553 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:47:45,554 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:47:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:47:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:47:45,555 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:45,555 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-25 08:47:45,555 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:45,555 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-07-25 08:47:45,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:46,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:46,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:47:46,494 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:47:46,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:47:46,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:47:46,494 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-07-25 08:47:52,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:52,345 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:47:52,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:47:52,346 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-25 08:47:52,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:52,347 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:47:52,347 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:47:52,348 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3486 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=7395, Invalid=21675, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:47:52,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:47:52,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:47:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:47:52,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:47:52,358 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-25 08:47:52,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:52,358 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:47:52,359 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:47:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:47:52,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:47:52,360 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:52,360 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-25 08:47:52,360 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:52,360 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-07-25 08:47:52,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:53,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:53,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:47:53,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:47:53,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:47:53,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:47:53,309 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-07-25 08:47:59,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:59,370 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:47:59,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:47:59,370 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:47:59,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:59,371 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:47:59,371 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:47:59,372 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=7568, Invalid=22188, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:47:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:47:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:47:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:47:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:47:59,379 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-25 08:47:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:59,379 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:47:59,379 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:47:59,379 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:47:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:47:59,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:59,380 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-25 08:47:59,381 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:59,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-07-25 08:47:59,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:00,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:00,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:48:00,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:48:00,342 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:48:00,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:48:00,343 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-07-25 08:48:06,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:06,507 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:48:06,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:48:06,508 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-25 08:48:06,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:06,508 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:48:06,508 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:48:06,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3655 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=7743, Invalid=22707, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:48:06,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:48:06,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:48:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:48:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:48:06,516 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-25 08:48:06,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:06,516 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:48:06,516 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:48:06,516 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:48:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:48:06,517 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:06,517 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-25 08:48:06,517 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:06,517 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-07-25 08:48:06,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:07,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:07,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:48:07,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:48:07,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:48:07,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:48:07,453 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-07-25 08:48:13,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:13,967 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:48:13,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:48:13,967 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:48:13,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:13,968 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:48:13,968 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:48:13,969 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3741 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=7920, Invalid=23232, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:48:13,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:48:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:48:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:48:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:48:13,979 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-25 08:48:13,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:13,979 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:48:13,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:48:13,980 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:48:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:48:13,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:13,981 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-25 08:48:13,981 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:13,981 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-07-25 08:48:13,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:15,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:15,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:48:15,020 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:48:15,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:48:15,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:48:15,021 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-07-25 08:48:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:22,539 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:48:22,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:48:22,540 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-25 08:48:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:22,541 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:48:22,541 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:48:22,542 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3828 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=8099, Invalid=23763, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:48:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:48:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:48:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:48:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:48:22,549 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-25 08:48:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:22,549 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:48:22,549 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:48:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:48:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:48:22,550 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:22,550 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-25 08:48:22,550 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:22,551 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-07-25 08:48:22,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:23,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:23,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:48:23,677 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:48:23,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:48:23,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:48:23,678 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-07-25 08:48:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:31,139 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:48:31,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:48:31,139 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:48:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:31,139 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:48:31,140 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:48:31,140 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3916 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=8280, Invalid=24300, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:48:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:48:31,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:48:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:48:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:48:31,147 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-25 08:48:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:31,148 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:48:31,148 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:48:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:48:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:48:31,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:31,148 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-25 08:48:31,149 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:31,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-07-25 08:48:31,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:32,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:32,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:48:32,304 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:48:32,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:48:32,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:48:32,305 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-07-25 08:48:39,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:39,862 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:48:39,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:48:39,862 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-25 08:48:39,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:39,862 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:48:39,863 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:48:39,863 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4005 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=8463, Invalid=24843, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:48:39,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:48:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:48:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:48:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:48:39,871 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-25 08:48:39,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:39,871 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:48:39,871 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:48:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:48:39,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:48:39,872 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:39,872 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-25 08:48:39,872 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:39,873 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-07-25 08:48:39,873 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:40,969 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:40,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:48:40,969 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:48:40,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:48:40,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:48:40,970 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-07-25 08:48:48,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:48,160 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:48:48,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:48:48,160 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:48:48,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:48,161 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:48:48,161 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:48:48,163 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4095 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=8648, Invalid=25392, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:48:48,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:48:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:48:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:48:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:48:48,169 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-25 08:48:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:48,170 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:48:48,170 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:48:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:48:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:48:48,170 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:48,171 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-25 08:48:48,171 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:48,171 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-07-25 08:48:48,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:49,222 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:49,222 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:48:49,222 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:48:49,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:48:49,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:48:49,223 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. Received shutdown request... [2018-07-25 08:48:56,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:48:56,118 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:48:56,125 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:48:56,125 INFO L202 PluginConnector]: Adding new model count_by_k.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:48:56 BoogieIcfgContainer [2018-07-25 08:48:56,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:48:56,126 INFO L168 Benchmark]: Toolchain (without parser) took 250879.73 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 537.4 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -68.6 MB). Peak memory consumption was 468.8 MB. Max. memory is 7.1 GB. [2018-07-25 08:48:56,128 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:48:56,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.05 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. [2018-07-25 08:48:56,129 INFO L168 Benchmark]: Boogie Preprocessor took 21.04 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. [2018-07-25 08:48:56,129 INFO L168 Benchmark]: RCFGBuilder took 263.11 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:48:56,130 INFO L168 Benchmark]: TraceAbstraction took 250548.58 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 537.4 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -79.2 MB). Peak memory consumption was 458.2 MB. Max. memory is 7.1 GB. [2018-07-25 08:48:56,133 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 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.05 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 21.04 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 263.11 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250548.58 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 537.4 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -79.2 MB). Peak memory consumption was 458.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 38]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 38). Cancelled while BasicCegarLoop was constructing difference of abstraction (189states) and interpolant automaton (currently 81 states, 95 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 174 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 250.4s OverallTime, 93 OverallIterations, 93 TraceHistogramMax, 210.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 462 SDtfs, 0 SDslu, 8635 SDs, 0 SdLazy, 9004 SolverSat, 4185 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8729 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 8635 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128669 ImplicationChecksByTransitivity, 222.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=92, 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, 92 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 16.1s SatisfiabilityAnalysisTime, 21.0s InterpolantComputationTime, 8928 NumberOfCodeBlocks, 8928 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 8835 ConstructedInterpolants, 0 QuantifiedInterpolants, 5466429 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 93 InterpolantComputations, 1 PerfectInterpolantSequences, 0/268088 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/count_by_k.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-48-56-147.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_k.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-48-56-147.csv Completed graceful shutdown