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/array4.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:42:30,283 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:42:30,285 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:42:30,298 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:42:30,298 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:42:30,300 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:42:30,301 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:42:30,303 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:42:30,306 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:42:30,307 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:42:30,310 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:42:30,310 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:42:30,312 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:42:30,313 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:42:30,315 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:42:30,316 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:42:30,324 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:42:30,329 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:42:30,334 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:42:30,339 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:42:30,341 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:42:30,343 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:42:30,348 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:42:30,348 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:42:30,349 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:42:30,350 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:42:30,351 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:42:30,351 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:42:30,352 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:42:30,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:42:30,353 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:42:30,354 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:42:30,357 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:42:30,371 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:42:30,371 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:42:30,373 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:42:30,373 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:42:30,373 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:42:30,374 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:42:30,374 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:42:30,374 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:42:30,422 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:42:30,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:42:30,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:42:30,440 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:42:30,441 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:42:30,442 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array4.i_4.bpl [2018-07-25 08:42:30,442 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array4.i_4.bpl' [2018-07-25 08:42:30,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:42:30,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:42:30,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:42:30,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:42:30,496 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:42:30,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/1) ... [2018-07-25 08:42:30,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/1) ... [2018-07-25 08:42:30,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:42:30,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:42:30,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:42:30,545 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:42:30,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/1) ... [2018-07-25 08:42:30,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/1) ... [2018-07-25 08:42:30,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/1) ... [2018-07-25 08:42:30,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/1) ... [2018-07-25 08:42:30,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/1) ... [2018-07-25 08:42:30,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/1) ... [2018-07-25 08:42:30,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/1) ... [2018-07-25 08:42:30,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:42:30,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:42:30,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:42:30,572 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:42:30,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/1) ... [2018-07-25 08:42:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:42:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:42:30,854 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:42:30,855 INFO L202 PluginConnector]: Adding new model array4.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:42:30 BoogieIcfgContainer [2018-07-25 08:42:30,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:42:30,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:42:30,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:42:30,860 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:42:30,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:42:30" (1/2) ... [2018-07-25 08:42:30,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326d0d9c and model type array4.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:42:30, skipping insertion in model container [2018-07-25 08:42:30,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array4.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:42:30" (2/2) ... [2018-07-25 08:42:30,866 INFO L112 eAbstractionObserver]: Analyzing ICFG array4.i_4.bpl [2018-07-25 08:42:30,877 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:42:30,887 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:42:30,946 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:42:30,947 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:42:30,947 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:42:30,947 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:42:30,948 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:42:30,948 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:42:30,948 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:42:30,948 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:42:30,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:42:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 08:42:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:42:30,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:30,984 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 08:42:30,986 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:30,991 INFO L82 PathProgramCache]: Analyzing trace with hash 889539531, now seen corresponding path program 1 times [2018-07-25 08:42:30,998 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,070 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 08:42:31,075 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:42:31,076 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:42:31,080 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:42:31,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:42:31,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:42:31,096 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-07-25 08:42:31,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,138 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2018-07-25 08:42:31,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:42:31,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-07-25 08:42:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,152 INFO L225 Difference]: With dead ends: 16 [2018-07-25 08:42:31,152 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:42:31,156 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 08:42:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:42:31,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:42:31,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:42:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 08:42:31,197 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2018-07-25 08:42:31,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,197 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 08:42:31,198 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:42:31,198 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 08:42:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:42:31,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,199 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:42:31,199 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1897191999, now seen corresponding path program 1 times [2018-07-25 08:42:31,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-25 08:42:31,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:31,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:42:31,230 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:42:31,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:42:31,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:42:31,232 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-07-25 08:42:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,265 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-07-25 08:42:31,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:42:31,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-07-25 08:42:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,266 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:42:31,266 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:42:31,268 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:42:31,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:42:31,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:42:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:42:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 08:42:31,273 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2018-07-25 08:42:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,273 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 08:42:31,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:42:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 08:42:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:42:31,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,275 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-07-25 08:42:31,275 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,275 INFO L82 PathProgramCache]: Analyzing trace with hash 87273139, now seen corresponding path program 2 times [2018-07-25 08:42:31,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-25 08:42:31,333 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:31,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:42:31,334 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:42:31,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:42:31,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:42:31,335 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2018-07-25 08:42:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,366 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-07-25 08:42:31,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:42:31,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-07-25 08:42:31,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,368 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:42:31,368 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:42:31,369 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:42:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:42:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:42:31,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:42:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 08:42:31,375 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-07-25 08:42:31,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,375 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 08:42:31,376 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:42:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 08:42:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:42:31,377 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,377 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-07-25 08:42:31,377 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1310275289, now seen corresponding path program 3 times [2018-07-25 08:42:31,377 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-25 08:42:31,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:31,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:42:31,459 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:42:31,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:42:31,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:42:31,460 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2018-07-25 08:42:31,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,510 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-07-25 08:42:31,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:42:31,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-07-25 08:42:31,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,512 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:42:31,512 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:42:31,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:42:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:42:31,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:42:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:42:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-25 08:42:31,529 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2018-07-25 08:42:31,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,530 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-25 08:42:31,530 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:42:31,530 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-25 08:42:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:42:31,531 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,531 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-07-25 08:42:31,533 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1731406235, now seen corresponding path program 4 times [2018-07-25 08:42:31,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-07-25 08:42:31,591 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:31,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:42:31,592 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:42:31,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:42:31,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:42:31,593 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2018-07-25 08:42:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,631 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-07-25 08:42:31,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:42:31,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-07-25 08:42:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,633 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:42:31,633 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:42:31,633 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:42:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:42:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:42:31,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:42:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 08:42:31,640 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2018-07-25 08:42:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,641 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 08:42:31,641 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:42:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 08:42:31,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:42:31,642 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,642 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-07-25 08:42:31,642 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,643 INFO L82 PathProgramCache]: Analyzing trace with hash 77451279, now seen corresponding path program 5 times [2018-07-25 08:42:31,643 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-25 08:42:31,689 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:31,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:42:31,689 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:42:31,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:42:31,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:42:31,691 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 8 states. [2018-07-25 08:42:31,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,726 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-07-25 08:42:31,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:42:31,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-07-25 08:42:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,728 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:42:31,728 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:42:31,729 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:42:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:42:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:42:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:42:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 08:42:31,737 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 26 [2018-07-25 08:42:31,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,737 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 08:42:31,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:42:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 08:42:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:42:31,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,739 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-07-25 08:42:31,739 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,740 INFO L82 PathProgramCache]: Analyzing trace with hash 422296707, now seen corresponding path program 6 times [2018-07-25 08:42:31,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-25 08:42:31,794 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:31,794 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:42:31,795 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:42:31,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:42:31,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:42:31,796 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2018-07-25 08:42:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,873 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2018-07-25 08:42:31,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:42:31,874 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-07-25 08:42:31,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,875 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:42:31,875 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:42:31,876 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:42:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:42:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:42:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:42:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-25 08:42:31,893 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 30 [2018-07-25 08:42:31,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,893 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-25 08:42:31,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:42:31,897 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-25 08:42:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:42:31,898 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,898 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-07-25 08:42:31,899 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1553862921, now seen corresponding path program 7 times [2018-07-25 08:42:31,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-07-25 08:42:31,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:31,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:42:31,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:42:31,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:42:31,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:42:31,970 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2018-07-25 08:42:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:32,005 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2018-07-25 08:42:32,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:42:32,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-07-25 08:42:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:32,007 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:42:32,007 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:42:32,008 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:42:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:42:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:42:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:42:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 08:42:32,016 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2018-07-25 08:42:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:32,016 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 08:42:32,016 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:42:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 08:42:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:42:32,018 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:32,018 INFO L354 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-07-25 08:42:32,018 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:32,019 INFO L82 PathProgramCache]: Analyzing trace with hash -783980693, now seen corresponding path program 8 times [2018-07-25 08:42:32,019 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-25 08:42:32,076 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:42:32,077 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:42:32,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:42:32,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:42:32,078 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 11 states. [2018-07-25 08:42:32,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:32,114 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2018-07-25 08:42:32,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:42:32,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-07-25 08:42:32,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:32,116 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:42:32,116 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:42:32,117 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:42:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:42:32,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:42:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:42:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 08:42:32,125 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 38 [2018-07-25 08:42:32,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:32,125 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 08:42:32,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:42:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 08:42:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:42:32,127 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:32,127 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-07-25 08:42:32,127 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:32,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1067768353, now seen corresponding path program 9 times [2018-07-25 08:42:32,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-25 08:42:32,202 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,202 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:42:32,202 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:42:32,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:42:32,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:42:32,206 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 12 states. [2018-07-25 08:42:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:32,259 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2018-07-25 08:42:32,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:42:32,260 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-07-25 08:42:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:32,261 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:42:32,261 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:42:32,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:42:32,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:42:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:42:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:42:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-25 08:42:32,269 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 42 [2018-07-25 08:42:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:32,270 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-25 08:42:32,270 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:42:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-25 08:42:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:42:32,272 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:32,272 INFO L354 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-07-25 08:42:32,272 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:32,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1034431059, now seen corresponding path program 10 times [2018-07-25 08:42:32,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-07-25 08:42:32,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:42:32,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:42:32,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:42:32,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:42:32,346 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 13 states. [2018-07-25 08:42:32,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:32,397 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2018-07-25 08:42:32,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:42:32,398 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-07-25 08:42:32,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:32,399 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:42:32,399 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:42:32,400 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:42:32,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:42:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:42:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:42:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 08:42:32,417 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 46 [2018-07-25 08:42:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:32,419 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 08:42:32,420 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:42:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 08:42:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:42:32,421 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:32,421 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-07-25 08:42:32,422 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:32,422 INFO L82 PathProgramCache]: Analyzing trace with hash -2051967801, now seen corresponding path program 11 times [2018-07-25 08:42:32,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-07-25 08:42:32,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:42:32,517 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:42:32,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:42:32,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:42:32,518 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 14 states. [2018-07-25 08:42:32,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:32,569 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2018-07-25 08:42:32,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:42:32,570 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-07-25 08:42:32,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:32,571 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:42:32,571 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:42:32,572 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:42:32,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:42:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:42:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:42:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 08:42:32,579 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 50 [2018-07-25 08:42:32,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:32,580 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 08:42:32,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:42:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 08:42:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:42:32,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:32,582 INFO L354 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-07-25 08:42:32,582 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:32,582 INFO L82 PathProgramCache]: Analyzing trace with hash 75236667, now seen corresponding path program 12 times [2018-07-25 08:42:32,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-07-25 08:42:32,661 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,661 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:42:32,661 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:42:32,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:42:32,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:42:32,663 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 15 states. [2018-07-25 08:42:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:32,694 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2018-07-25 08:42:32,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:42:32,695 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-07-25 08:42:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:32,696 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:42:32,696 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:42:32,697 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:42:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:42:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:42:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:42:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-25 08:42:32,704 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 54 [2018-07-25 08:42:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:32,705 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-25 08:42:32,705 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:42:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-25 08:42:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:42:32,706 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:32,706 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-07-25 08:42:32,707 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:32,707 INFO L82 PathProgramCache]: Analyzing trace with hash 361552815, now seen corresponding path program 13 times [2018-07-25 08:42:32,707 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-07-25 08:42:32,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:42:32,806 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:42:32,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:42:32,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:42:32,807 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 16 states. [2018-07-25 08:42:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:32,851 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2018-07-25 08:42:32,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:42:32,852 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-07-25 08:42:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:32,853 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:42:32,853 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:42:32,854 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:42:32,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:42:32,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:42:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:42:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 08:42:32,863 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 58 [2018-07-25 08:42:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:32,864 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 08:42:32,864 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:42:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 08:42:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:42:32,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:32,865 INFO L354 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-07-25 08:42:32,868 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:32,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1008142301, now seen corresponding path program 14 times [2018-07-25 08:42:32,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-07-25 08:42:32,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:42:32,952 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:42:32,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:42:32,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:42:32,955 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 17 states. [2018-07-25 08:42:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,005 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2018-07-25 08:42:33,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:42:33,006 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-07-25 08:42:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,007 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:42:33,007 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:42:33,008 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:42:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:42:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:42:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:42:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 08:42:33,018 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 62 [2018-07-25 08:42:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,020 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 08:42:33,020 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:42:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 08:42:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:42:33,021 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,021 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-07-25 08:42:33,026 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1978312041, now seen corresponding path program 15 times [2018-07-25 08:42:33,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-07-25 08:42:33,114 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:33,115 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:42:33,115 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:42:33,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:42:33,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:42:33,120 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 18 states. [2018-07-25 08:42:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,171 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2018-07-25 08:42:33,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:42:33,171 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-07-25 08:42:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,172 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:42:33,173 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:42:33,174 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:42:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:42:33,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:42:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:42:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-25 08:42:33,184 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 66 [2018-07-25 08:42:33,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,188 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-25 08:42:33,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:42:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-25 08:42:33,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:42:33,190 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,190 INFO L354 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-07-25 08:42:33,191 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,191 INFO L82 PathProgramCache]: Analyzing trace with hash 303497995, now seen corresponding path program 16 times [2018-07-25 08:42:33,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-07-25 08:42:33,282 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:33,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:42:33,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:42:33,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:42:33,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:42:33,284 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 19 states. [2018-07-25 08:42:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,316 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2018-07-25 08:42:33,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:42:33,317 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-07-25 08:42:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,318 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:42:33,318 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:42:33,319 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:42:33,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:42:33,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:42:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:42:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 08:42:33,325 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 70 [2018-07-25 08:42:33,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,326 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 08:42:33,326 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:42:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 08:42:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:42:33,327 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,327 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-07-25 08:42:33,327 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,328 INFO L82 PathProgramCache]: Analyzing trace with hash -177016449, now seen corresponding path program 17 times [2018-07-25 08:42:33,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-07-25 08:42:33,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:33,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:42:33,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:42:33,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:42:33,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:42:33,423 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 20 states. [2018-07-25 08:42:33,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,466 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2018-07-25 08:42:33,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:42:33,467 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-07-25 08:42:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,475 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:42:33,475 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:42:33,476 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:42:33,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:42:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:42:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:42:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 08:42:33,491 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 74 [2018-07-25 08:42:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,492 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 08:42:33,492 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:42:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 08:42:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:42:33,493 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,493 INFO L354 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-07-25 08:42:33,494 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2100176371, now seen corresponding path program 18 times [2018-07-25 08:42:33,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-07-25 08:42:33,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:33,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:42:33,623 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:42:33,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:42:33,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:42:33,624 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 21 states. [2018-07-25 08:42:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,659 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2018-07-25 08:42:33,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:42:33,660 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-07-25 08:42:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,661 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:42:33,661 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:42:33,663 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:42:33,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:42:33,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:42:33,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:42:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-25 08:42:33,674 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 78 [2018-07-25 08:42:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,674 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-25 08:42:33,674 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:42:33,674 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-25 08:42:33,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:42:33,677 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,677 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-07-25 08:42:33,678 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1640865895, now seen corresponding path program 19 times [2018-07-25 08:42:33,678 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-07-25 08:42:33,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:33,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:42:33,793 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:42:33,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:42:33,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:42:33,794 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 22 states. [2018-07-25 08:42:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,830 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2018-07-25 08:42:33,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:42:33,830 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-07-25 08:42:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,831 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:42:33,831 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:42:33,832 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:42:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:42:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:42:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:42:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 08:42:33,838 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 82 [2018-07-25 08:42:33,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,838 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 08:42:33,838 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:42:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 08:42:33,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:42:33,840 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,840 INFO L354 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-07-25 08:42:33,840 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1957273381, now seen corresponding path program 20 times [2018-07-25 08:42:33,841 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-07-25 08:42:33,937 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:33,937 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:42:33,938 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:42:33,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:42:33,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:42:33,939 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 23 states. [2018-07-25 08:42:33,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,974 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2018-07-25 08:42:33,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:42:33,975 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-07-25 08:42:33,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,976 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:42:33,976 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:42:33,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:42:33,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:42:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:42:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:42:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 08:42:33,982 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 86 [2018-07-25 08:42:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,982 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 08:42:33,983 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:42:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 08:42:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:42:33,984 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,984 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-07-25 08:42:33,984 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,985 INFO L82 PathProgramCache]: Analyzing trace with hash -783456433, now seen corresponding path program 21 times [2018-07-25 08:42:33,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-07-25 08:42:34,113 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:34,113 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:42:34,114 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:42:34,114 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:42:34,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:42:34,115 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 24 states. [2018-07-25 08:42:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:34,162 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2018-07-25 08:42:34,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:42:34,163 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-07-25 08:42:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:34,164 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:42:34,164 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:42:34,165 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:42:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:42:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:42:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:42:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-25 08:42:34,175 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 90 [2018-07-25 08:42:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:34,175 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-25 08:42:34,175 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:42:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-25 08:42:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:42:34,177 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:34,177 INFO L354 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-07-25 08:42:34,177 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:34,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1162366013, now seen corresponding path program 22 times [2018-07-25 08:42:34,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2018-07-25 08:42:34,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:34,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:42:34,316 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:42:34,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:42:34,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:42:34,318 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 25 states. [2018-07-25 08:42:34,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:34,363 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2018-07-25 08:42:34,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:42:34,364 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-07-25 08:42:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:34,365 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:42:34,365 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:42:34,366 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:42:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:42:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:42:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:42:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 08:42:34,372 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 94 [2018-07-25 08:42:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:34,372 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 08:42:34,372 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:42:34,372 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 08:42:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:42:34,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:34,374 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-07-25 08:42:34,374 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:34,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1041909303, now seen corresponding path program 23 times [2018-07-25 08:42:34,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-07-25 08:42:34,536 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:34,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:42:34,537 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:42:34,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:42:34,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:42:34,540 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 26 states. [2018-07-25 08:42:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:34,586 INFO L93 Difference]: Finished difference Result 153 states and 156 transitions. [2018-07-25 08:42:34,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:42:34,587 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-07-25 08:42:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:34,588 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:42:34,588 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:42:34,589 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:42:34,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:42:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:42:34,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:42:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 08:42:34,595 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 98 [2018-07-25 08:42:34,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:34,596 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 08:42:34,596 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:42:34,596 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 08:42:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:42:34,597 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:34,597 INFO L354 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-07-25 08:42:34,598 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:34,598 INFO L82 PathProgramCache]: Analyzing trace with hash -2122703189, now seen corresponding path program 24 times [2018-07-25 08:42:34,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-07-25 08:42:34,781 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:34,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:42:34,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:42:34,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:42:34,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:42:34,785 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 27 states. [2018-07-25 08:42:34,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:34,845 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2018-07-25 08:42:34,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:42:34,845 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-07-25 08:42:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:34,846 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:42:34,846 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:42:34,847 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:42:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:42:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:42:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:42:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-25 08:42:34,853 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 102 [2018-07-25 08:42:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:34,853 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-25 08:42:34,853 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:42:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-25 08:42:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:42:34,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:34,855 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-07-25 08:42:34,855 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:34,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1705231073, now seen corresponding path program 25 times [2018-07-25 08:42:34,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-07-25 08:42:34,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:34,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:42:34,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:42:34,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:42:34,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:42:34,970 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 28 states. [2018-07-25 08:42:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:35,015 INFO L93 Difference]: Finished difference Result 165 states and 168 transitions. [2018-07-25 08:42:35,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:42:35,015 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-07-25 08:42:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:35,016 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:42:35,016 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:42:35,017 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:42:35,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:42:35,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:42:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:42:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 08:42:35,022 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 106 [2018-07-25 08:42:35,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:35,023 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 08:42:35,023 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:42:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 08:42:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:42:35,024 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:35,024 INFO L354 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-07-25 08:42:35,024 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:35,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1304797587, now seen corresponding path program 26 times [2018-07-25 08:42:35,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:35,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-07-25 08:42:35,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:35,144 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:42:35,144 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:42:35,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:42:35,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:42:35,145 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 29 states. [2018-07-25 08:42:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:35,191 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2018-07-25 08:42:35,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:42:35,191 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-07-25 08:42:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:35,192 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:42:35,192 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:42:35,193 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:42:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:42:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:42:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:42:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 08:42:35,198 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 110 [2018-07-25 08:42:35,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:35,198 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 08:42:35,199 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:42:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 08:42:35,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:42:35,200 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:35,200 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-07-25 08:42:35,200 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:35,201 INFO L82 PathProgramCache]: Analyzing trace with hash -801420281, now seen corresponding path program 27 times [2018-07-25 08:42:35,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2018-07-25 08:42:35,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:35,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:42:35,333 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:42:35,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:42:35,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:42:35,334 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 30 states. [2018-07-25 08:42:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:35,390 INFO L93 Difference]: Finished difference Result 177 states and 180 transitions. [2018-07-25 08:42:35,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:42:35,390 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-07-25 08:42:35,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:35,391 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:42:35,391 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:42:35,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:42:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:42:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:42:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:42:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-25 08:42:35,397 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 114 [2018-07-25 08:42:35,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:35,398 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-25 08:42:35,398 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:42:35,398 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-25 08:42:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:42:35,399 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:35,399 INFO L354 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-07-25 08:42:35,400 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:35,400 INFO L82 PathProgramCache]: Analyzing trace with hash -2050868101, now seen corresponding path program 28 times [2018-07-25 08:42:35,400 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-07-25 08:42:35,537 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:35,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:42:35,538 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:42:35,538 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:42:35,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:42:35,539 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 31 states. [2018-07-25 08:42:35,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:35,590 INFO L93 Difference]: Finished difference Result 183 states and 186 transitions. [2018-07-25 08:42:35,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:42:35,590 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-07-25 08:42:35,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:35,592 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:42:35,592 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:42:35,593 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:42:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:42:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:42:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:42:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 08:42:35,604 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 118 [2018-07-25 08:42:35,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:35,604 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 08:42:35,604 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:42:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 08:42:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:42:35,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:35,606 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-07-25 08:42:35,606 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:35,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1042320657, now seen corresponding path program 29 times [2018-07-25 08:42:35,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2018-07-25 08:42:35,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:35,752 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:42:35,752 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:42:35,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:42:35,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:42:35,753 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 32 states. [2018-07-25 08:42:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:35,815 INFO L93 Difference]: Finished difference Result 189 states and 192 transitions. [2018-07-25 08:42:35,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:42:35,815 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-07-25 08:42:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:35,816 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:42:35,817 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:42:35,818 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:42:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:42:35,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:42:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:42:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 08:42:35,824 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 122 [2018-07-25 08:42:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:35,825 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 08:42:35,825 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:42:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 08:42:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:42:35,826 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:35,826 INFO L354 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-07-25 08:42:35,827 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:35,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2020085917, now seen corresponding path program 30 times [2018-07-25 08:42:35,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-07-25 08:42:35,976 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:35,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:42:35,976 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:42:35,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:42:35,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:42:35,978 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 33 states. [2018-07-25 08:42:36,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:36,027 INFO L93 Difference]: Finished difference Result 195 states and 198 transitions. [2018-07-25 08:42:36,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:42:36,028 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-07-25 08:42:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:36,029 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:42:36,029 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:42:36,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:42:36,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:42:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:42:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:42:36,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-25 08:42:36,036 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 126 [2018-07-25 08:42:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:36,037 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-25 08:42:36,037 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:42:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-25 08:42:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:42:36,038 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:36,038 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-07-25 08:42:36,038 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:36,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1232122327, now seen corresponding path program 31 times [2018-07-25 08:42:36,039 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-07-25 08:42:36,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:36,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:42:36,190 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:42:36,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:42:36,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:42:36,192 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 34 states. [2018-07-25 08:42:36,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:36,255 INFO L93 Difference]: Finished difference Result 201 states and 204 transitions. [2018-07-25 08:42:36,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:42:36,256 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-07-25 08:42:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:36,257 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:42:36,257 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:42:36,258 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:42:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:42:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:42:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:42:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 08:42:36,264 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 130 [2018-07-25 08:42:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:36,265 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 08:42:36,266 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:42:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 08:42:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:42:36,267 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:36,267 INFO L354 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-07-25 08:42:36,267 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:36,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1452361141, now seen corresponding path program 32 times [2018-07-25 08:42:36,268 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2018-07-25 08:42:36,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:36,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:42:36,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:42:36,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:42:36,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:42:36,415 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 35 states. [2018-07-25 08:42:36,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:36,482 INFO L93 Difference]: Finished difference Result 207 states and 210 transitions. [2018-07-25 08:42:36,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:42:36,482 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-07-25 08:42:36,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:36,483 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:42:36,483 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:42:36,485 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:42:36,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:42:36,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:42:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:42:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 08:42:36,491 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 134 [2018-07-25 08:42:36,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:36,491 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 08:42:36,492 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:42:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 08:42:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:42:36,493 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:36,494 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-07-25 08:42:36,494 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:36,495 INFO L82 PathProgramCache]: Analyzing trace with hash 957810879, now seen corresponding path program 33 times [2018-07-25 08:42:36,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2018-07-25 08:42:36,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:36,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:42:36,657 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:42:36,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:42:36,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:42:36,658 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 36 states. [2018-07-25 08:42:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:36,726 INFO L93 Difference]: Finished difference Result 213 states and 216 transitions. [2018-07-25 08:42:36,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:42:36,726 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-07-25 08:42:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:36,727 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:42:36,727 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:42:36,728 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:42:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:42:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:42:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:42:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-25 08:42:36,735 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 138 [2018-07-25 08:42:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:36,735 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-25 08:42:36,736 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:42:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-25 08:42:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:42:36,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:36,737 INFO L354 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-07-25 08:42:36,738 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:36,738 INFO L82 PathProgramCache]: Analyzing trace with hash 963550515, now seen corresponding path program 34 times [2018-07-25 08:42:36,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-07-25 08:42:36,930 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:36,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:42:36,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:42:36,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:42:36,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:42:36,932 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 37 states. [2018-07-25 08:42:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:37,008 INFO L93 Difference]: Finished difference Result 219 states and 222 transitions. [2018-07-25 08:42:37,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:42:37,009 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-07-25 08:42:37,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:37,010 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:42:37,010 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:42:37,011 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:42:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:42:37,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:42:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:42:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 08:42:37,018 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 142 [2018-07-25 08:42:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:37,019 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 08:42:37,019 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:42:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 08:42:37,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:42:37,020 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:37,021 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-07-25 08:42:37,021 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:37,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1526364071, now seen corresponding path program 35 times [2018-07-25 08:42:37,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-07-25 08:42:37,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:37,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:42:37,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:42:37,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:42:37,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:42:37,259 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 38 states. [2018-07-25 08:42:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:37,336 INFO L93 Difference]: Finished difference Result 225 states and 228 transitions. [2018-07-25 08:42:37,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:42:37,336 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-07-25 08:42:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:37,337 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:42:37,337 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:42:37,338 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:42:37,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:42:37,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:42:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:42:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 08:42:37,344 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 146 [2018-07-25 08:42:37,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:37,344 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 08:42:37,344 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:42:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 08:42:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:42:37,346 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:37,346 INFO L354 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-07-25 08:42:37,346 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:37,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2109708315, now seen corresponding path program 36 times [2018-07-25 08:42:37,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-07-25 08:42:37,524 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:37,524 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:42:37,524 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:42:37,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:42:37,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:42:37,527 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 39 states. [2018-07-25 08:42:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:37,596 INFO L93 Difference]: Finished difference Result 231 states and 234 transitions. [2018-07-25 08:42:37,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:42:37,597 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-07-25 08:42:37,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:37,598 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:42:37,598 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:42:37,599 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:42:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:42:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:42:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:42:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-25 08:42:37,606 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 150 [2018-07-25 08:42:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:37,606 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-25 08:42:37,606 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:42:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-25 08:42:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:42:37,609 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:37,609 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-07-25 08:42:37,610 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:37,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1900215951, now seen corresponding path program 37 times [2018-07-25 08:42:37,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-07-25 08:42:37,789 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:37,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:42:37,790 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:42:37,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:42:37,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:42:37,791 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 40 states. [2018-07-25 08:42:37,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:37,874 INFO L93 Difference]: Finished difference Result 237 states and 240 transitions. [2018-07-25 08:42:37,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:42:37,875 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-07-25 08:42:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:37,876 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:42:37,876 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:42:37,877 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:42:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:42:37,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:42:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:42:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 08:42:37,885 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 154 [2018-07-25 08:42:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:37,885 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 08:42:37,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:42:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 08:42:37,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:42:37,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:37,887 INFO L354 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-07-25 08:42:37,888 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:37,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1266046205, now seen corresponding path program 38 times [2018-07-25 08:42:37,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2018-07-25 08:42:38,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:38,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:42:38,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:42:38,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:42:38,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:42:38,084 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 41 states. [2018-07-25 08:42:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:38,164 INFO L93 Difference]: Finished difference Result 243 states and 246 transitions. [2018-07-25 08:42:38,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:42:38,166 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-07-25 08:42:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:38,168 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:42:38,168 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:42:38,169 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:42:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:42:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:42:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:42:38,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 08:42:38,176 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 158 [2018-07-25 08:42:38,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:38,176 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 08:42:38,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:42:38,176 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 08:42:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:42:38,178 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:38,179 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-07-25 08:42:38,179 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:38,179 INFO L82 PathProgramCache]: Analyzing trace with hash 907582839, now seen corresponding path program 39 times [2018-07-25 08:42:38,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-07-25 08:42:38,364 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:38,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:42:38,365 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:42:38,365 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:42:38,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:42:38,367 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 42 states. [2018-07-25 08:42:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:38,453 INFO L93 Difference]: Finished difference Result 249 states and 252 transitions. [2018-07-25 08:42:38,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:42:38,453 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-07-25 08:42:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:38,455 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:42:38,455 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:42:38,456 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:42:38,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:42:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:42:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:42:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-25 08:42:38,462 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 162 [2018-07-25 08:42:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:38,462 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-25 08:42:38,462 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:42:38,463 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-25 08:42:38,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:42:38,464 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:38,465 INFO L354 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-07-25 08:42:38,465 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:38,465 INFO L82 PathProgramCache]: Analyzing trace with hash 334812651, now seen corresponding path program 40 times [2018-07-25 08:42:38,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2018-07-25 08:42:38,656 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:38,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:42:38,656 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:42:38,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:42:38,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:42:38,658 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 43 states. [2018-07-25 08:42:38,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:38,754 INFO L93 Difference]: Finished difference Result 255 states and 258 transitions. [2018-07-25 08:42:38,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:42:38,754 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-07-25 08:42:38,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:38,755 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:42:38,755 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:42:38,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:42:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:42:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:42:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:42:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 08:42:38,763 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 166 [2018-07-25 08:42:38,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:38,763 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 08:42:38,763 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:42:38,764 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 08:42:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:42:38,766 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:38,766 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-07-25 08:42:38,766 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:38,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1537430623, now seen corresponding path program 41 times [2018-07-25 08:42:38,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-07-25 08:42:38,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:38,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:42:38,974 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:42:38,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:42:38,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:42:38,976 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 44 states. [2018-07-25 08:42:39,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:39,071 INFO L93 Difference]: Finished difference Result 261 states and 264 transitions. [2018-07-25 08:42:39,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:42:39,071 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-07-25 08:42:39,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:39,073 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:42:39,073 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:42:39,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:42:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:42:39,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:42:39,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:42:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 08:42:39,081 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 170 [2018-07-25 08:42:39,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:39,081 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 08:42:39,081 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:42:39,081 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 08:42:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:42:39,083 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:39,083 INFO L354 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-07-25 08:42:39,084 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:39,084 INFO L82 PathProgramCache]: Analyzing trace with hash -903276333, now seen corresponding path program 42 times [2018-07-25 08:42:39,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2018-07-25 08:42:39,302 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:39,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:42:39,302 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:42:39,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:42:39,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:42:39,305 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 45 states. [2018-07-25 08:42:39,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:39,407 INFO L93 Difference]: Finished difference Result 267 states and 270 transitions. [2018-07-25 08:42:39,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:42:39,407 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-07-25 08:42:39,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:39,408 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:42:39,408 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:42:39,410 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:42:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:42:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:42:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:42:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-25 08:42:39,421 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 174 [2018-07-25 08:42:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:39,421 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-25 08:42:39,421 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:42:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-25 08:42:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:42:39,424 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:39,424 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-07-25 08:42:39,424 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:39,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1945427129, now seen corresponding path program 43 times [2018-07-25 08:42:39,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2018-07-25 08:42:39,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:39,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:42:39,685 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:42:39,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:42:39,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:42:39,687 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 46 states. [2018-07-25 08:42:39,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:39,812 INFO L93 Difference]: Finished difference Result 273 states and 276 transitions. [2018-07-25 08:42:39,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:42:39,812 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-07-25 08:42:39,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:39,814 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:42:39,814 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:42:39,815 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:42:39,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:42:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:42:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:42:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 08:42:39,822 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 178 [2018-07-25 08:42:39,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:39,822 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 08:42:39,823 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:42:39,823 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 08:42:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:42:39,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:39,827 INFO L354 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-07-25 08:42:39,827 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:39,827 INFO L82 PathProgramCache]: Analyzing trace with hash -45190213, now seen corresponding path program 44 times [2018-07-25 08:42:39,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-07-25 08:42:40,027 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:40,027 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:42:40,028 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:42:40,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:42:40,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:42:40,029 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 47 states. [2018-07-25 08:42:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:40,135 INFO L93 Difference]: Finished difference Result 279 states and 282 transitions. [2018-07-25 08:42:40,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:42:40,135 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-07-25 08:42:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:40,136 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:42:40,137 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:42:40,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:42:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:42:40,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:42:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:42:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 08:42:40,144 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 182 [2018-07-25 08:42:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:40,145 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 08:42:40,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:42:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 08:42:40,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:42:40,147 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:40,147 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-07-25 08:42:40,147 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:40,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1769474607, now seen corresponding path program 45 times [2018-07-25 08:42:40,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2018-07-25 08:42:40,349 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:40,349 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:42:40,349 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:42:40,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:42:40,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:42:40,351 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 48 states. [2018-07-25 08:42:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:40,455 INFO L93 Difference]: Finished difference Result 285 states and 288 transitions. [2018-07-25 08:42:40,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:42:40,455 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-07-25 08:42:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:40,457 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:42:40,457 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:42:40,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:42:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:42:40,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:42:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:42:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-25 08:42:40,465 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 186 [2018-07-25 08:42:40,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:40,465 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-25 08:42:40,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:42:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-25 08:42:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:42:40,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:40,467 INFO L354 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-07-25 08:42:40,467 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:40,468 INFO L82 PathProgramCache]: Analyzing trace with hash -879958365, now seen corresponding path program 46 times [2018-07-25 08:42:40,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2018-07-25 08:42:40,666 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:40,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:42:40,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:42:40,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:42:40,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:42:40,668 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 49 states. [2018-07-25 08:42:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:40,796 INFO L93 Difference]: Finished difference Result 291 states and 294 transitions. [2018-07-25 08:42:40,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:42:40,797 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-07-25 08:42:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:40,798 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:42:40,798 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:42:40,799 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:42:40,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:42:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:42:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:42:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 08:42:40,808 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 190 [2018-07-25 08:42:40,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:40,808 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 08:42:40,808 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:42:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 08:42:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:42:40,810 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:40,811 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-07-25 08:42:40,811 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:40,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1911420649, now seen corresponding path program 47 times [2018-07-25 08:42:40,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2018-07-25 08:42:41,017 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:41,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:42:41,018 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:42:41,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:42:41,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:42:41,019 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 50 states. [2018-07-25 08:42:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:41,148 INFO L93 Difference]: Finished difference Result 297 states and 300 transitions. [2018-07-25 08:42:41,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:42:41,149 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-07-25 08:42:41,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:41,150 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:42:41,150 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:42:41,152 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:42:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:42:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:42:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:42:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 08:42:41,161 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 194 [2018-07-25 08:42:41,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:41,161 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 08:42:41,161 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:42:41,162 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 08:42:41,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:42:41,164 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:41,164 INFO L354 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-07-25 08:42:41,164 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:41,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1259106699, now seen corresponding path program 48 times [2018-07-25 08:42:41,164 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-07-25 08:42:41,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:41,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:42:41,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:42:41,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:42:41,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:42:41,377 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 51 states. [2018-07-25 08:42:41,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:41,505 INFO L93 Difference]: Finished difference Result 303 states and 306 transitions. [2018-07-25 08:42:41,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:42:41,505 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-07-25 08:42:41,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:41,507 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:42:41,507 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:42:41,508 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:42:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:42:41,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:42:41,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:42:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-25 08:42:41,518 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 198 [2018-07-25 08:42:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:41,518 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-25 08:42:41,519 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:42:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-25 08:42:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:42:41,521 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:41,522 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-07-25 08:42:41,522 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:41,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1946083329, now seen corresponding path program 49 times [2018-07-25 08:42:41,522 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-07-25 08:42:41,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:41,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:42:41,733 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:42:41,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:42:41,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:42:41,735 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 52 states. [2018-07-25 08:42:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:41,894 INFO L93 Difference]: Finished difference Result 309 states and 312 transitions. [2018-07-25 08:42:41,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:42:41,894 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-07-25 08:42:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:41,896 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:42:41,896 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:42:41,897 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:42:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:42:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:42:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:42:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 08:42:41,904 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 202 [2018-07-25 08:42:41,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:41,904 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 08:42:41,904 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:42:41,905 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 08:42:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:42:41,907 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:41,907 INFO L354 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-07-25 08:42:41,907 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:41,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1980427149, now seen corresponding path program 50 times [2018-07-25 08:42:41,907 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2018-07-25 08:42:42,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:42,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:42:42,152 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:42:42,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:42:42,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:42:42,155 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 53 states. [2018-07-25 08:42:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:42,371 INFO L93 Difference]: Finished difference Result 315 states and 318 transitions. [2018-07-25 08:42:42,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:42:42,372 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-07-25 08:42:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:42,373 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:42:42,374 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:42:42,375 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:42:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:42:42,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:42:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:42:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 08:42:42,389 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 206 [2018-07-25 08:42:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:42,390 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 08:42:42,390 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:42:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 08:42:42,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:42:42,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:42,395 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-07-25 08:42:42,395 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:42,395 INFO L82 PathProgramCache]: Analyzing trace with hash -311603481, now seen corresponding path program 51 times [2018-07-25 08:42:42,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 2652 trivial. 0 not checked. [2018-07-25 08:42:42,700 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:42,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:42:42,700 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:42:42,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:42:42,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:42:42,702 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 54 states. [2018-07-25 08:42:42,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:42,867 INFO L93 Difference]: Finished difference Result 321 states and 324 transitions. [2018-07-25 08:42:42,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:42:42,868 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-07-25 08:42:42,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:42,869 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:42:42,869 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:42:42,870 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:42:42,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:42:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:42:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:42:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-25 08:42:42,879 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 210 [2018-07-25 08:42:42,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:42,880 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-25 08:42:42,880 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:42:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-25 08:42:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:42:42,882 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:42,882 INFO L354 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-07-25 08:42:42,882 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:42,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1905340581, now seen corresponding path program 52 times [2018-07-25 08:42:42,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2018-07-25 08:42:43,103 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:43,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:42:43,103 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:42:43,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:42:43,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:42:43,105 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 55 states. [2018-07-25 08:42:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:43,337 INFO L93 Difference]: Finished difference Result 327 states and 330 transitions. [2018-07-25 08:42:43,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:42:43,337 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-07-25 08:42:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:43,339 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:42:43,339 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:42:43,339 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:42:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:42:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:42:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:42:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 08:42:43,348 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 214 [2018-07-25 08:42:43,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:43,349 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 08:42:43,349 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:42:43,349 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 08:42:43,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:42:43,352 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:43,352 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-07-25 08:42:43,353 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:43,353 INFO L82 PathProgramCache]: Analyzing trace with hash 880711119, now seen corresponding path program 53 times [2018-07-25 08:42:43,353 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2018-07-25 08:42:43,584 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:43,584 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:42:43,585 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:42:43,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:42:43,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:42:43,586 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 56 states. [2018-07-25 08:42:43,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:43,791 INFO L93 Difference]: Finished difference Result 333 states and 336 transitions. [2018-07-25 08:42:43,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:42:43,791 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-07-25 08:42:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:43,792 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:42:43,793 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:42:43,793 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:42:43,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:42:43,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:42:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:42:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 08:42:43,802 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 218 [2018-07-25 08:42:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:43,802 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 08:42:43,802 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:42:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 08:42:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:42:43,805 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:43,805 INFO L354 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-07-25 08:42:43,805 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:43,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1453433411, now seen corresponding path program 54 times [2018-07-25 08:42:43,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-07-25 08:42:44,035 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:44,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:42:44,035 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:42:44,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:42:44,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:42:44,037 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 57 states. [2018-07-25 08:42:44,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:44,288 INFO L93 Difference]: Finished difference Result 339 states and 342 transitions. [2018-07-25 08:42:44,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:42:44,288 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-07-25 08:42:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:44,290 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:42:44,290 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:42:44,291 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:42:44,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:42:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:42:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:42:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-25 08:42:44,299 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 222 [2018-07-25 08:42:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:44,299 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-25 08:42:44,299 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:42:44,300 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-25 08:42:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:42:44,303 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:44,303 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-07-25 08:42:44,303 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:44,303 INFO L82 PathProgramCache]: Analyzing trace with hash -614665033, now seen corresponding path program 55 times [2018-07-25 08:42:44,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2018-07-25 08:42:44,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:44,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:42:44,554 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:42:44,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:42:44,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:42:44,555 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 58 states. [2018-07-25 08:42:44,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:44,790 INFO L93 Difference]: Finished difference Result 345 states and 348 transitions. [2018-07-25 08:42:44,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:42:44,791 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-07-25 08:42:44,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:44,792 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:42:44,792 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:42:44,793 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:42:44,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:42:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:42:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:42:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 08:42:44,803 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 226 [2018-07-25 08:42:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:44,803 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 08:42:44,803 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:42:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 08:42:44,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:42:44,806 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:44,806 INFO L354 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-07-25 08:42:44,806 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:44,807 INFO L82 PathProgramCache]: Analyzing trace with hash -659190485, now seen corresponding path program 56 times [2018-07-25 08:42:44,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2018-07-25 08:42:45,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:45,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:42:45,063 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:42:45,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:42:45,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:42:45,065 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 59 states. [2018-07-25 08:42:45,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:45,228 INFO L93 Difference]: Finished difference Result 351 states and 354 transitions. [2018-07-25 08:42:45,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:42:45,228 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-07-25 08:42:45,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:45,229 INFO L225 Difference]: With dead ends: 351 [2018-07-25 08:42:45,230 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:42:45,230 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:42:45,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:42:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:42:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:42:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 08:42:45,238 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 230 [2018-07-25 08:42:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:45,238 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 08:42:45,238 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:42:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 08:42:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:42:45,243 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:45,244 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-07-25 08:42:45,244 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1412459423, now seen corresponding path program 57 times [2018-07-25 08:42:45,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-07-25 08:42:45,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:45,524 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:42:45,524 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:42:45,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:42:45,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:42:45,526 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 60 states. [2018-07-25 08:42:45,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:45,815 INFO L93 Difference]: Finished difference Result 357 states and 360 transitions. [2018-07-25 08:42:45,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:42:45,815 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-07-25 08:42:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:45,817 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:42:45,817 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:42:45,818 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:42:45,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:42:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:42:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:42:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-07-25 08:42:45,828 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 234 [2018-07-25 08:42:45,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:45,828 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-07-25 08:42:45,828 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:42:45,828 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-07-25 08:42:45,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:42:45,833 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:45,833 INFO L354 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-07-25 08:42:45,834 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:45,834 INFO L82 PathProgramCache]: Analyzing trace with hash 47353875, now seen corresponding path program 58 times [2018-07-25 08:42:45,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2018-07-25 08:42:46,116 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:46,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:42:46,116 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:42:46,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:42:46,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:42:46,118 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 61 states. [2018-07-25 08:42:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:46,402 INFO L93 Difference]: Finished difference Result 363 states and 366 transitions. [2018-07-25 08:42:46,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:42:46,402 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-07-25 08:42:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:46,404 INFO L225 Difference]: With dead ends: 363 [2018-07-25 08:42:46,404 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:42:46,405 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:42:46,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:42:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:42:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:42:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 08:42:46,413 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 238 [2018-07-25 08:42:46,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:46,414 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 08:42:46,414 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:42:46,414 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 08:42:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:42:46,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:46,417 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-07-25 08:42:46,417 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:46,418 INFO L82 PathProgramCache]: Analyzing trace with hash 153156231, now seen corresponding path program 59 times [2018-07-25 08:42:46,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2018-07-25 08:42:46,675 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:46,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:42:46,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:42:46,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:42:46,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:42:46,678 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 62 states. [2018-07-25 08:42:46,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:46,965 INFO L93 Difference]: Finished difference Result 369 states and 372 transitions. [2018-07-25 08:42:46,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:42:46,966 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-07-25 08:42:46,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:46,967 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:42:46,967 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:42:46,968 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:42:46,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:42:46,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:42:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:42:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-25 08:42:46,976 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 242 [2018-07-25 08:42:46,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:46,977 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-25 08:42:46,977 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:42:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-25 08:42:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:42:46,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:46,980 INFO L354 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-07-25 08:42:46,980 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:46,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1155486981, now seen corresponding path program 60 times [2018-07-25 08:42:46,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 3660 trivial. 0 not checked. [2018-07-25 08:42:47,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:47,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:42:47,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:42:47,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:42:47,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:42:47,241 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 63 states. [2018-07-25 08:42:47,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:47,490 INFO L93 Difference]: Finished difference Result 375 states and 378 transitions. [2018-07-25 08:42:47,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:42:47,490 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-07-25 08:42:47,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:47,492 INFO L225 Difference]: With dead ends: 375 [2018-07-25 08:42:47,492 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:42:47,494 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:42:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:42:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 08:42:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:42:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-25 08:42:47,504 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 246 [2018-07-25 08:42:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:47,505 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-25 08:42:47,505 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:42:47,505 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-25 08:42:47,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:42:47,508 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:47,509 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-07-25 08:42:47,509 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:47,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1549181295, now seen corresponding path program 61 times [2018-07-25 08:42:47,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2018-07-25 08:42:47,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:47,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:42:47,786 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:42:47,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:42:47,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:42:47,788 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 64 states. [2018-07-25 08:42:48,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:48,144 INFO L93 Difference]: Finished difference Result 381 states and 384 transitions. [2018-07-25 08:42:48,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:42:48,145 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-07-25 08:42:48,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:48,147 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:42:48,147 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:42:48,148 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:42:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:42:48,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 08:42:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:42:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-25 08:42:48,157 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 250 [2018-07-25 08:42:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:48,158 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-25 08:42:48,158 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:42:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-25 08:42:48,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:42:48,161 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:48,162 INFO L354 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-07-25 08:42:48,162 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:48,162 INFO L82 PathProgramCache]: Analyzing trace with hash -540549661, now seen corresponding path program 62 times [2018-07-25 08:42:48,162 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2018-07-25 08:42:48,499 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:48,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:42:48,499 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:42:48,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:42:48,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:42:48,501 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 65 states. [2018-07-25 08:42:48,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:48,873 INFO L93 Difference]: Finished difference Result 387 states and 390 transitions. [2018-07-25 08:42:48,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:42:48,874 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-07-25 08:42:48,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:48,876 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:42:48,876 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:42:48,877 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:42:48,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:42:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 08:42:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:42:48,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 08:42:48,894 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 254 [2018-07-25 08:42:48,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:48,896 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 08:42:48,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:42:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 08:42:48,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:42:48,898 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:48,898 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-07-25 08:42:48,898 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:48,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1476829097, now seen corresponding path program 63 times [2018-07-25 08:42:48,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2018-07-25 08:42:49,233 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:49,233 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:42:49,233 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:42:49,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:42:49,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:42:49,235 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 66 states. [2018-07-25 08:42:49,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:49,512 INFO L93 Difference]: Finished difference Result 393 states and 396 transitions. [2018-07-25 08:42:49,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:42:49,512 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-07-25 08:42:49,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:49,519 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:42:49,519 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:42:49,520 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:42:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:42:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-25 08:42:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:42:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-07-25 08:42:49,540 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 258 [2018-07-25 08:42:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:49,541 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-07-25 08:42:49,541 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:42:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-07-25 08:42:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:42:49,544 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:49,544 INFO L354 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-07-25 08:42:49,545 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:49,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1190144203, now seen corresponding path program 64 times [2018-07-25 08:42:49,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2018-07-25 08:42:49,799 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:49,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:42:49,800 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:42:49,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:42:49,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:42:49,801 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 67 states. [2018-07-25 08:42:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:50,145 INFO L93 Difference]: Finished difference Result 399 states and 402 transitions. [2018-07-25 08:42:50,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:42:50,145 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-07-25 08:42:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:50,147 INFO L225 Difference]: With dead ends: 399 [2018-07-25 08:42:50,147 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:42:50,148 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:42:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:42:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-25 08:42:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:42:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 08:42:50,156 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 262 [2018-07-25 08:42:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:50,156 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 08:42:50,156 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:42:50,156 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 08:42:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:42:50,159 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:50,159 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-07-25 08:42:50,159 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:50,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1043412799, now seen corresponding path program 65 times [2018-07-25 08:42:50,160 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2018-07-25 08:42:50,431 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:50,431 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:42:50,431 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:42:50,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:42:50,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:42:50,433 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 68 states. [2018-07-25 08:42:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:50,791 INFO L93 Difference]: Finished difference Result 405 states and 408 transitions. [2018-07-25 08:42:50,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:42:50,791 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-07-25 08:42:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:50,793 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:42:50,793 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:42:50,794 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:42:50,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:42:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 08:42:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:42:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-25 08:42:50,805 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 266 [2018-07-25 08:42:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:50,805 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-25 08:42:50,805 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:42:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-25 08:42:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:42:50,807 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:50,807 INFO L354 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-07-25 08:42:50,807 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:50,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1094612045, now seen corresponding path program 66 times [2018-07-25 08:42:50,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2018-07-25 08:42:51,094 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:51,094 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:42:51,094 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:42:51,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:42:51,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:42:51,096 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 69 states. [2018-07-25 08:42:51,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:51,469 INFO L93 Difference]: Finished difference Result 411 states and 414 transitions. [2018-07-25 08:42:51,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:42:51,469 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-07-25 08:42:51,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:51,471 INFO L225 Difference]: With dead ends: 411 [2018-07-25 08:42:51,471 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:42:51,472 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:42:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:42:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-25 08:42:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:42:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-25 08:42:51,480 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 270 [2018-07-25 08:42:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:51,480 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-25 08:42:51,480 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:42:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-25 08:42:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:42:51,482 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:51,482 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-07-25 08:42:51,482 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:51,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1764107815, now seen corresponding path program 67 times [2018-07-25 08:42:51,482 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2018-07-25 08:42:51,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:51,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:42:51,760 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:42:51,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:42:51,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:42:51,762 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 70 states. [2018-07-25 08:42:52,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:52,039 INFO L93 Difference]: Finished difference Result 417 states and 420 transitions. [2018-07-25 08:42:52,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:42:52,039 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-07-25 08:42:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:52,041 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:42:52,041 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:42:52,042 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:42:52,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:42:52,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-25 08:42:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:42:52,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-25 08:42:52,049 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 274 [2018-07-25 08:42:52,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:52,049 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-25 08:42:52,050 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:42:52,050 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-25 08:42:52,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:42:52,051 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:52,051 INFO L354 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-07-25 08:42:52,052 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:52,052 INFO L82 PathProgramCache]: Analyzing trace with hash 224659099, now seen corresponding path program 68 times [2018-07-25 08:42:52,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:52,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 4692 trivial. 0 not checked. [2018-07-25 08:42:52,360 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:52,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:42:52,361 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:42:52,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:42:52,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:42:52,362 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 71 states. [2018-07-25 08:42:52,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:52,862 INFO L93 Difference]: Finished difference Result 423 states and 426 transitions. [2018-07-25 08:42:52,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:42:52,862 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-07-25 08:42:52,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:52,864 INFO L225 Difference]: With dead ends: 423 [2018-07-25 08:42:52,864 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:42:52,865 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:42:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:42:52,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 08:42:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:42:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 08:42:52,874 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 278 [2018-07-25 08:42:52,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:52,875 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 08:42:52,875 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:42:52,875 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 08:42:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:42:52,876 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:52,876 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-07-25 08:42:52,877 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:52,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1795173647, now seen corresponding path program 69 times [2018-07-25 08:42:52,877 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 4830 trivial. 0 not checked. [2018-07-25 08:42:53,163 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:53,163 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:42:53,163 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:42:53,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:42:53,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:42:53,165 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 72 states. [2018-07-25 08:42:53,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:53,459 INFO L93 Difference]: Finished difference Result 429 states and 432 transitions. [2018-07-25 08:42:53,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:42:53,459 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-07-25 08:42:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:53,464 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:42:53,464 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:42:53,465 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:42:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:42:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-25 08:42:53,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:42:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-07-25 08:42:53,478 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 282 [2018-07-25 08:42:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:53,479 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-07-25 08:42:53,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:42:53,479 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-07-25 08:42:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:42:53,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:53,480 INFO L354 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1] [2018-07-25 08:42:53,481 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:53,481 INFO L82 PathProgramCache]: Analyzing trace with hash -251684477, now seen corresponding path program 70 times [2018-07-25 08:42:53,481 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2018-07-25 08:42:53,752 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:53,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:42:53,753 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:42:53,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:42:53,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:42:53,755 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 73 states. [2018-07-25 08:42:54,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:54,182 INFO L93 Difference]: Finished difference Result 435 states and 438 transitions. [2018-07-25 08:42:54,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:42:54,182 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-07-25 08:42:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:54,184 INFO L225 Difference]: With dead ends: 435 [2018-07-25 08:42:54,184 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:42:54,185 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:42:54,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:42:54,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-25 08:42:54,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:42:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 08:42:54,192 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 286 [2018-07-25 08:42:54,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:54,192 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 08:42:54,192 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:42:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 08:42:54,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:42:54,194 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:54,194 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-07-25 08:42:54,194 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:54,195 INFO L82 PathProgramCache]: Analyzing trace with hash 2112310263, now seen corresponding path program 71 times [2018-07-25 08:42:54,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2018-07-25 08:42:54,438 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:54,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:42:54,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:42:54,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:42:54,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:42:54,441 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 74 states. [2018-07-25 08:42:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:54,875 INFO L93 Difference]: Finished difference Result 441 states and 444 transitions. [2018-07-25 08:42:54,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:42:54,875 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-07-25 08:42:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:54,877 INFO L225 Difference]: With dead ends: 441 [2018-07-25 08:42:54,877 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:42:54,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:42:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:42:54,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 08:42:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:42:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-25 08:42:54,886 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 290 [2018-07-25 08:42:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:54,886 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-25 08:42:54,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:42:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-25 08:42:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:42:54,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:54,888 INFO L354 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1] [2018-07-25 08:42:54,889 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:54,889 INFO L82 PathProgramCache]: Analyzing trace with hash 532431979, now seen corresponding path program 72 times [2018-07-25 08:42:54,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2018-07-25 08:42:55,223 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:55,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:42:55,225 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:42:55,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:42:55,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:42:55,227 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 75 states. [2018-07-25 08:42:55,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:55,718 INFO L93 Difference]: Finished difference Result 447 states and 450 transitions. [2018-07-25 08:42:55,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:42:55,718 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-07-25 08:42:55,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:55,719 INFO L225 Difference]: With dead ends: 447 [2018-07-25 08:42:55,720 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:42:55,720 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:42:55,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:42:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-25 08:42:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:42:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-25 08:42:55,729 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 294 [2018-07-25 08:42:55,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:55,730 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-25 08:42:55,730 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:42:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-25 08:42:55,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:42:55,732 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:55,732 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-07-25 08:42:55,733 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:55,733 INFO L82 PathProgramCache]: Analyzing trace with hash -737967393, now seen corresponding path program 73 times [2018-07-25 08:42:55,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2018-07-25 08:42:56,118 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:56,119 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:42:56,119 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:42:56,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:42:56,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:42:56,120 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 76 states. [2018-07-25 08:42:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:56,359 INFO L93 Difference]: Finished difference Result 453 states and 456 transitions. [2018-07-25 08:42:56,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:42:56,359 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-07-25 08:42:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:56,361 INFO L225 Difference]: With dead ends: 453 [2018-07-25 08:42:56,361 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:42:56,362 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:42:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:42:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-25 08:42:56,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:42:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-25 08:42:56,369 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 298 [2018-07-25 08:42:56,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:56,369 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-25 08:42:56,369 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:42:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-25 08:42:56,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:42:56,371 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:56,371 INFO L354 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1] [2018-07-25 08:42:56,372 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:56,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1203898195, now seen corresponding path program 74 times [2018-07-25 08:42:56,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 5550 trivial. 0 not checked. [2018-07-25 08:42:56,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:56,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:42:56,674 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:42:56,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:42:56,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:42:56,675 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 77 states. [2018-07-25 08:42:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:57,176 INFO L93 Difference]: Finished difference Result 459 states and 462 transitions. [2018-07-25 08:42:57,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:42:57,177 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-07-25 08:42:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:57,178 INFO L225 Difference]: With dead ends: 459 [2018-07-25 08:42:57,179 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:42:57,179 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:42:57,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:42:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 08:42:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:42:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 08:42:57,186 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 302 [2018-07-25 08:42:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:57,186 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 08:42:57,187 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:42:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 08:42:57,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:42:57,188 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:57,188 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-07-25 08:42:57,189 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:57,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1753427513, now seen corresponding path program 75 times [2018-07-25 08:42:57,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5700 trivial. 0 not checked. [2018-07-25 08:42:57,431 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:57,431 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:42:57,432 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:42:57,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:42:57,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:42:57,433 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 78 states. [2018-07-25 08:42:57,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:57,772 INFO L93 Difference]: Finished difference Result 465 states and 468 transitions. [2018-07-25 08:42:57,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:42:57,773 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-07-25 08:42:57,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:57,774 INFO L225 Difference]: With dead ends: 465 [2018-07-25 08:42:57,775 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:42:57,775 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:42:57,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:42:57,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-25 08:42:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:42:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-07-25 08:42:57,782 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 306 [2018-07-25 08:42:57,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:57,782 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-07-25 08:42:57,782 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:42:57,783 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-07-25 08:42:57,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:42:57,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:57,784 INFO L354 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1] [2018-07-25 08:42:57,785 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:57,785 INFO L82 PathProgramCache]: Analyzing trace with hash 255386171, now seen corresponding path program 76 times [2018-07-25 08:42:57,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 5852 trivial. 0 not checked. [2018-07-25 08:42:58,097 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:58,097 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:42:58,097 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:42:58,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:42:58,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:42:58,098 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 79 states. [2018-07-25 08:42:58,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:58,436 INFO L93 Difference]: Finished difference Result 471 states and 474 transitions. [2018-07-25 08:42:58,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:42:58,436 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-07-25 08:42:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:58,438 INFO L225 Difference]: With dead ends: 471 [2018-07-25 08:42:58,438 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:42:58,439 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:42:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:42:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-25 08:42:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:42:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 08:42:58,446 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 310 [2018-07-25 08:42:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:58,446 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 08:42:58,446 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:42:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 08:42:58,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:42:58,448 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:58,448 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-07-25 08:42:58,449 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:58,449 INFO L82 PathProgramCache]: Analyzing trace with hash -361023313, now seen corresponding path program 77 times [2018-07-25 08:42:58,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2018-07-25 08:42:58,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:58,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:42:58,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:42:58,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:42:58,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:42:58,805 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 80 states. [2018-07-25 08:42:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:59,177 INFO L93 Difference]: Finished difference Result 477 states and 480 transitions. [2018-07-25 08:42:59,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:42:59,178 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-07-25 08:42:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:59,179 INFO L225 Difference]: With dead ends: 477 [2018-07-25 08:42:59,179 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:42:59,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:42:59,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:42:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-25 08:42:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:42:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-07-25 08:42:59,187 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 314 [2018-07-25 08:42:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:59,187 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-07-25 08:42:59,187 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:42:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-07-25 08:42:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:42:59,189 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:59,190 INFO L354 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 1, 1, 1, 1] [2018-07-25 08:42:59,190 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:59,190 INFO L82 PathProgramCache]: Analyzing trace with hash 340317475, now seen corresponding path program 78 times [2018-07-25 08:42:59,190 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 6162 trivial. 0 not checked. [2018-07-25 08:42:59,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:59,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:42:59,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:42:59,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:42:59,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:42:59,513 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 81 states. [2018-07-25 08:42:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:59,846 INFO L93 Difference]: Finished difference Result 483 states and 486 transitions. [2018-07-25 08:42:59,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:42:59,846 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-07-25 08:42:59,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:59,847 INFO L225 Difference]: With dead ends: 483 [2018-07-25 08:42:59,847 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:42:59,848 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:42:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:42:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-25 08:42:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:42:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-07-25 08:42:59,855 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 318 [2018-07-25 08:42:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:59,855 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-07-25 08:42:59,855 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:42:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-07-25 08:42:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:42:59,857 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:59,857 INFO L354 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-07-25 08:42:59,858 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:59,858 INFO L82 PathProgramCache]: Analyzing trace with hash -416893033, now seen corresponding path program 79 times [2018-07-25 08:42:59,858 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 6320 trivial. 0 not checked. [2018-07-25 08:43:00,080 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:00,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:43:00,081 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:43:00,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:43:00,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:43:00,082 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 82 states. [2018-07-25 08:43:00,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:00,405 INFO L93 Difference]: Finished difference Result 489 states and 492 transitions. [2018-07-25 08:43:00,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:43:00,405 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-07-25 08:43:00,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:00,406 INFO L225 Difference]: With dead ends: 489 [2018-07-25 08:43:00,406 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:43:00,407 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:43:00,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:43:00,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-25 08:43:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:43:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-07-25 08:43:00,414 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 322 [2018-07-25 08:43:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:00,414 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-07-25 08:43:00,414 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:43:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-07-25 08:43:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:43:00,415 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:00,415 INFO L354 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 1, 1, 1, 1] [2018-07-25 08:43:00,416 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash -317071349, now seen corresponding path program 80 times [2018-07-25 08:43:00,416 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 6480 trivial. 0 not checked. [2018-07-25 08:43:00,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:00,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:43:00,701 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:43:00,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:43:00,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:43:00,703 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 83 states. [2018-07-25 08:43:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:01,055 INFO L93 Difference]: Finished difference Result 495 states and 498 transitions. [2018-07-25 08:43:01,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:43:01,055 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-07-25 08:43:01,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:01,056 INFO L225 Difference]: With dead ends: 495 [2018-07-25 08:43:01,056 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:43:01,057 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:43:01,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:43:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 08:43:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:43:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-25 08:43:01,064 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 326 [2018-07-25 08:43:01,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:01,064 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-25 08:43:01,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:43:01,064 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-25 08:43:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:43:01,066 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:01,066 INFO L354 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-07-25 08:43:01,066 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:01,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1616425345, now seen corresponding path program 81 times [2018-07-25 08:43:01,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2018-07-25 08:43:01,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:01,320 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:43:01,320 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:43:01,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:43:01,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:43:01,321 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 84 states. [2018-07-25 08:43:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:01,697 INFO L93 Difference]: Finished difference Result 501 states and 504 transitions. [2018-07-25 08:43:01,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:43:01,697 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-07-25 08:43:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:01,699 INFO L225 Difference]: With dead ends: 501 [2018-07-25 08:43:01,699 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:43:01,699 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:43:01,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:43:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-25 08:43:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:43:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-07-25 08:43:01,706 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 330 [2018-07-25 08:43:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:01,706 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-07-25 08:43:01,706 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:43:01,706 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-07-25 08:43:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:43:01,708 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:01,708 INFO L354 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 1, 1, 1, 1] [2018-07-25 08:43:01,708 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:01,709 INFO L82 PathProgramCache]: Analyzing trace with hash 668205811, now seen corresponding path program 82 times [2018-07-25 08:43:01,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2018-07-25 08:43:02,006 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:02,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:43:02,006 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:43:02,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:43:02,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:43:02,008 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 85 states. [2018-07-25 08:43:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:02,546 INFO L93 Difference]: Finished difference Result 507 states and 510 transitions. [2018-07-25 08:43:02,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:43:02,546 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-07-25 08:43:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:02,548 INFO L225 Difference]: With dead ends: 507 [2018-07-25 08:43:02,548 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:43:02,548 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:43:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:43:02,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-25 08:43:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:43:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-25 08:43:02,556 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 334 [2018-07-25 08:43:02,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:02,557 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-25 08:43:02,557 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:43:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-25 08:43:02,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:43:02,559 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:02,560 INFO L354 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-07-25 08:43:02,560 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:02,560 INFO L82 PathProgramCache]: Analyzing trace with hash 505740647, now seen corresponding path program 83 times [2018-07-25 08:43:02,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 6972 trivial. 0 not checked. [2018-07-25 08:43:02,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:02,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:43:02,917 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:43:02,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:43:02,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:43:02,919 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 86 states. [2018-07-25 08:43:03,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:03,419 INFO L93 Difference]: Finished difference Result 513 states and 516 transitions. [2018-07-25 08:43:03,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:43:03,419 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-07-25 08:43:03,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:03,421 INFO L225 Difference]: With dead ends: 513 [2018-07-25 08:43:03,421 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:43:03,421 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:43:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:43:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-25 08:43:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:43:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-07-25 08:43:03,426 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 338 [2018-07-25 08:43:03,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:03,426 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-07-25 08:43:03,426 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:43:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-07-25 08:43:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:43:03,428 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:03,429 INFO L354 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 1, 1, 1, 1] [2018-07-25 08:43:03,429 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:03,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1251950043, now seen corresponding path program 84 times [2018-07-25 08:43:03,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2018-07-25 08:43:03,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:03,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:43:03,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:43:03,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:43:03,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:43:03,665 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 87 states. [2018-07-25 08:43:04,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:04,171 INFO L93 Difference]: Finished difference Result 519 states and 522 transitions. [2018-07-25 08:43:04,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:43:04,171 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-07-25 08:43:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:04,173 INFO L225 Difference]: With dead ends: 519 [2018-07-25 08:43:04,173 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 08:43:04,174 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:43:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 08:43:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-25 08:43:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:43:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-07-25 08:43:04,181 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 342 [2018-07-25 08:43:04,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:04,181 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-07-25 08:43:04,181 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:43:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-07-25 08:43:04,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:43:04,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:04,183 INFO L354 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-07-25 08:43:04,183 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:04,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1690813519, now seen corresponding path program 85 times [2018-07-25 08:43:04,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2018-07-25 08:43:04,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:04,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:43:04,447 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:43:04,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:43:04,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:43:04,449 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 88 states. [2018-07-25 08:43:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:04,977 INFO L93 Difference]: Finished difference Result 525 states and 528 transitions. [2018-07-25 08:43:04,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:43:04,977 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-07-25 08:43:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:04,979 INFO L225 Difference]: With dead ends: 525 [2018-07-25 08:43:04,979 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 08:43:04,980 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:43:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 08:43:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-07-25 08:43:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:43:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-07-25 08:43:04,987 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 346 [2018-07-25 08:43:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:04,987 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-07-25 08:43:04,988 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:43:04,988 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-07-25 08:43:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:43:04,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:04,990 INFO L354 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 1, 1, 1, 1] [2018-07-25 08:43:04,990 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:04,990 INFO L82 PathProgramCache]: Analyzing trace with hash -744255293, now seen corresponding path program 86 times [2018-07-25 08:43:04,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 7482 trivial. 0 not checked. [2018-07-25 08:43:05,259 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:05,259 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:43:05,259 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:43:05,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:43:05,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:43:05,261 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 89 states. [2018-07-25 08:43:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:05,575 INFO L93 Difference]: Finished difference Result 531 states and 534 transitions. [2018-07-25 08:43:05,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:43:05,575 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-07-25 08:43:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:05,577 INFO L225 Difference]: With dead ends: 531 [2018-07-25 08:43:05,577 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:43:05,577 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:43:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:43:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-25 08:43:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:43:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-25 08:43:05,582 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 350 [2018-07-25 08:43:05,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:05,582 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-25 08:43:05,582 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:43:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-25 08:43:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:43:05,583 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:05,584 INFO L354 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-07-25 08:43:05,584 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:05,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1840751415, now seen corresponding path program 87 times [2018-07-25 08:43:05,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2018-07-25 08:43:05,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:05,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:43:05,907 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:43:05,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:43:05,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:43:05,908 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 90 states. [2018-07-25 08:43:06,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:06,472 INFO L93 Difference]: Finished difference Result 537 states and 540 transitions. [2018-07-25 08:43:06,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:43:06,473 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-07-25 08:43:06,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:06,474 INFO L225 Difference]: With dead ends: 537 [2018-07-25 08:43:06,475 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 08:43:06,475 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:43:06,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 08:43:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-07-25 08:43:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 08:43:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-07-25 08:43:06,482 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 354 [2018-07-25 08:43:06,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:06,482 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-07-25 08:43:06,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:43:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-07-25 08:43:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 08:43:06,484 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:06,484 INFO L354 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 1, 1, 1, 1] [2018-07-25 08:43:06,485 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:06,485 INFO L82 PathProgramCache]: Analyzing trace with hash 956890027, now seen corresponding path program 88 times [2018-07-25 08:43:06,485 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2018-07-25 08:43:06,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:06,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:43:06,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:43:06,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:43:06,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:43:06,767 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 91 states. [2018-07-25 08:43:07,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:07,347 INFO L93 Difference]: Finished difference Result 543 states and 546 transitions. [2018-07-25 08:43:07,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:43:07,348 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-07-25 08:43:07,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:07,349 INFO L225 Difference]: With dead ends: 543 [2018-07-25 08:43:07,349 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 08:43:07,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:43:07,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 08:43:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-25 08:43:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:43:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-25 08:43:07,356 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 358 [2018-07-25 08:43:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:07,357 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-25 08:43:07,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:43:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-25 08:43:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:43:07,359 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:07,359 INFO L354 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-07-25 08:43:07,359 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash 723294751, now seen corresponding path program 89 times [2018-07-25 08:43:07,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 8010 trivial. 0 not checked. [2018-07-25 08:43:07,671 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:07,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:43:07,672 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:43:07,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:43:07,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:43:07,673 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 92 states. [2018-07-25 08:43:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:08,091 INFO L93 Difference]: Finished difference Result 549 states and 552 transitions. [2018-07-25 08:43:08,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:43:08,091 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-07-25 08:43:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:08,092 INFO L225 Difference]: With dead ends: 549 [2018-07-25 08:43:08,092 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 08:43:08,093 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:43:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 08:43:08,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-25 08:43:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 08:43:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-07-25 08:43:08,097 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 362 [2018-07-25 08:43:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:08,098 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-07-25 08:43:08,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:43:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-07-25 08:43:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 08:43:08,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:08,099 INFO L354 BasicCegarLoop]: trace histogram [91, 91, 90, 90, 1, 1, 1, 1] [2018-07-25 08:43:08,099 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:08,100 INFO L82 PathProgramCache]: Analyzing trace with hash -386433389, now seen corresponding path program 90 times [2018-07-25 08:43:08,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 8190 trivial. 0 not checked. [2018-07-25 08:43:08,389 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:08,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:43:08,389 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:43:08,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:43:08,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:43:08,390 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 93 states. [2018-07-25 08:43:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:08,915 INFO L93 Difference]: Finished difference Result 555 states and 558 transitions. [2018-07-25 08:43:08,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:43:08,915 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-07-25 08:43:08,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:08,917 INFO L225 Difference]: With dead ends: 555 [2018-07-25 08:43:08,917 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 08:43:08,918 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:43:08,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 08:43:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-25 08:43:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 08:43:08,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-07-25 08:43:08,924 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 366 [2018-07-25 08:43:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:08,925 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-07-25 08:43:08,925 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:43:08,925 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-07-25 08:43:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 08:43:08,927 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:08,927 INFO L354 BasicCegarLoop]: trace histogram [92, 92, 91, 91, 1, 1, 1, 1] [2018-07-25 08:43:08,927 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:08,928 INFO L82 PathProgramCache]: Analyzing trace with hash -2028033785, now seen corresponding path program 91 times [2018-07-25 08:43:08,928 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 8372 trivial. 0 not checked. [2018-07-25 08:43:09,441 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:09,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:43:09,442 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:43:09,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:43:09,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:43:09,443 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 94 states. [2018-07-25 08:43:10,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:10,106 INFO L93 Difference]: Finished difference Result 561 states and 564 transitions. [2018-07-25 08:43:10,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:43:10,107 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-07-25 08:43:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:10,108 INFO L225 Difference]: With dead ends: 561 [2018-07-25 08:43:10,108 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:43:10,108 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:43:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:43:10,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-07-25 08:43:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 08:43:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2018-07-25 08:43:10,116 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 370 [2018-07-25 08:43:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:10,116 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2018-07-25 08:43:10,116 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:43:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2018-07-25 08:43:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 08:43:10,118 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:10,118 INFO L354 BasicCegarLoop]: trace histogram [93, 93, 92, 92, 1, 1, 1, 1] [2018-07-25 08:43:10,119 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:10,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1234639227, now seen corresponding path program 92 times [2018-07-25 08:43:10,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 8556 trivial. 0 not checked. [2018-07-25 08:43:10,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:10,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:43:10,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:43:10,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:43:10,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:43:10,522 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand 95 states. [2018-07-25 08:43:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:11,036 INFO L93 Difference]: Finished difference Result 567 states and 570 transitions. [2018-07-25 08:43:11,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:43:11,036 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-07-25 08:43:11,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:11,038 INFO L225 Difference]: With dead ends: 567 [2018-07-25 08:43:11,038 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 08:43:11,039 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:43:11,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 08:43:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-25 08:43:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 08:43:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-07-25 08:43:11,047 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 374 [2018-07-25 08:43:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:11,047 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-07-25 08:43:11,047 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:43:11,047 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-07-25 08:43:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 08:43:11,049 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:11,049 INFO L354 BasicCegarLoop]: trace histogram [94, 94, 93, 93, 1, 1, 1, 1] [2018-07-25 08:43:11,050 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:11,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1676005359, now seen corresponding path program 93 times [2018-07-25 08:43:11,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 8742 trivial. 0 not checked. [2018-07-25 08:43:11,425 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:11,425 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:43:11,426 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:43:11,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:43:11,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:43:11,427 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 96 states. [2018-07-25 08:43:12,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:12,085 INFO L93 Difference]: Finished difference Result 573 states and 576 transitions. [2018-07-25 08:43:12,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:43:12,086 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-07-25 08:43:12,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:12,087 INFO L225 Difference]: With dead ends: 573 [2018-07-25 08:43:12,087 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 08:43:12,088 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:43:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 08:43:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-07-25 08:43:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 08:43:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2018-07-25 08:43:12,095 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 378 [2018-07-25 08:43:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:12,095 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2018-07-25 08:43:12,095 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:43:12,095 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2018-07-25 08:43:12,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 08:43:12,097 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:12,097 INFO L354 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1] [2018-07-25 08:43:12,098 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:12,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1190146973, now seen corresponding path program 94 times [2018-07-25 08:43:12,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 8930 trivial. 0 not checked. [2018-07-25 08:43:12,428 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:12,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:43:12,428 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:43:12,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:43:12,430 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:43:12,430 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand 97 states. [2018-07-25 08:43:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:12,841 INFO L93 Difference]: Finished difference Result 579 states and 582 transitions. [2018-07-25 08:43:12,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:43:12,842 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-07-25 08:43:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:12,843 INFO L225 Difference]: With dead ends: 579 [2018-07-25 08:43:12,843 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 08:43:12,844 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:43:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 08:43:12,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-25 08:43:12,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:43:12,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-07-25 08:43:12,852 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 382 [2018-07-25 08:43:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:12,852 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-07-25 08:43:12,852 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:43:12,852 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-07-25 08:43:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 08:43:12,854 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:12,855 INFO L354 BasicCegarLoop]: trace histogram [96, 96, 95, 95, 1, 1, 1, 1] [2018-07-25 08:43:12,855 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:12,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1684402473, now seen corresponding path program 95 times [2018-07-25 08:43:12,855 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 9120 trivial. 0 not checked. [2018-07-25 08:43:13,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:13,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:43:13,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:43:13,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:43:13,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:43:13,278 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 98 states. [2018-07-25 08:43:13,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:13,778 INFO L93 Difference]: Finished difference Result 585 states and 588 transitions. [2018-07-25 08:43:13,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:43:13,778 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-07-25 08:43:13,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:13,779 INFO L225 Difference]: With dead ends: 585 [2018-07-25 08:43:13,779 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 08:43:13,780 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:43:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 08:43:13,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-07-25 08:43:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:43:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2018-07-25 08:43:13,785 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 386 [2018-07-25 08:43:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:13,786 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2018-07-25 08:43:13,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:43:13,786 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2018-07-25 08:43:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 08:43:13,787 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:13,788 INFO L354 BasicCegarLoop]: trace histogram [97, 97, 96, 96, 1, 1, 1, 1] [2018-07-25 08:43:13,788 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:13,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1920362677, now seen corresponding path program 96 times [2018-07-25 08:43:13,788 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 9312 trivial. 0 not checked. [2018-07-25 08:43:14,120 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:14,120 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:43:14,121 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:43:14,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:43:14,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:43:14,122 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand 99 states. [2018-07-25 08:43:14,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:14,649 INFO L93 Difference]: Finished difference Result 591 states and 594 transitions. [2018-07-25 08:43:14,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:43:14,649 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-07-25 08:43:14,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:14,651 INFO L225 Difference]: With dead ends: 591 [2018-07-25 08:43:14,651 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 08:43:14,652 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:43:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 08:43:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-25 08:43:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 08:43:14,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-07-25 08:43:14,659 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 390 [2018-07-25 08:43:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:14,659 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-07-25 08:43:14,659 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:43:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-07-25 08:43:14,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 08:43:14,661 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:14,662 INFO L354 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 1, 1, 1, 1] [2018-07-25 08:43:14,662 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:14,662 INFO L82 PathProgramCache]: Analyzing trace with hash 6514111, now seen corresponding path program 97 times [2018-07-25 08:43:14,662 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2018-07-25 08:43:15,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:15,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:43:15,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:43:15,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:43:15,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:43:15,048 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 100 states. [2018-07-25 08:43:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:15,640 INFO L93 Difference]: Finished difference Result 597 states and 600 transitions. [2018-07-25 08:43:15,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:43:15,640 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-07-25 08:43:15,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:15,642 INFO L225 Difference]: With dead ends: 597 [2018-07-25 08:43:15,642 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 08:43:15,642 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:43:15,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 08:43:15,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-07-25 08:43:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 08:43:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2018-07-25 08:43:15,648 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 394 [2018-07-25 08:43:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:15,649 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2018-07-25 08:43:15,649 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:43:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2018-07-25 08:43:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 08:43:15,651 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:15,651 INFO L354 BasicCegarLoop]: trace histogram [99, 99, 98, 98, 1, 1, 1, 1] [2018-07-25 08:43:15,651 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash 355236403, now seen corresponding path program 98 times [2018-07-25 08:43:15,652 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 9702 trivial. 0 not checked. [2018-07-25 08:43:15,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:15,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:43:15,983 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:43:15,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:43:15,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:43:15,984 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand 101 states. [2018-07-25 08:43:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:16,896 INFO L93 Difference]: Finished difference Result 603 states and 606 transitions. [2018-07-25 08:43:16,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:43:16,896 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-07-25 08:43:16,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:16,897 INFO L225 Difference]: With dead ends: 603 [2018-07-25 08:43:16,897 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 08:43:16,898 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:43:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 08:43:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-25 08:43:16,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 08:43:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-07-25 08:43:16,904 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 398 [2018-07-25 08:43:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:16,905 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-07-25 08:43:16,905 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:43:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-07-25 08:43:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 08:43:16,907 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:16,907 INFO L354 BasicCegarLoop]: trace histogram [100, 100, 99, 99, 1, 1, 1, 1] [2018-07-25 08:43:16,907 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:16,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1550439591, now seen corresponding path program 99 times [2018-07-25 08:43:16,908 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 9900 trivial. 0 not checked. [2018-07-25 08:43:17,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:17,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:43:17,374 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:43:17,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:43:17,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:43:17,375 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 102 states. [2018-07-25 08:43:17,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:17,932 INFO L93 Difference]: Finished difference Result 609 states and 612 transitions. [2018-07-25 08:43:17,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:43:17,932 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-07-25 08:43:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:17,934 INFO L225 Difference]: With dead ends: 609 [2018-07-25 08:43:17,934 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 08:43:17,934 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:43:17,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 08:43:17,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-07-25 08:43:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 08:43:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2018-07-25 08:43:17,940 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 402 [2018-07-25 08:43:17,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:17,941 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2018-07-25 08:43:17,941 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:43:17,941 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2018-07-25 08:43:17,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 08:43:17,943 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:17,943 INFO L354 BasicCegarLoop]: trace histogram [101, 101, 100, 100, 1, 1, 1, 1] [2018-07-25 08:43:17,943 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:17,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1776257765, now seen corresponding path program 100 times [2018-07-25 08:43:17,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 10100 trivial. 0 not checked. [2018-07-25 08:43:18,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:18,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:43:18,337 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:43:18,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:43:18,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:43:18,338 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand 103 states. [2018-07-25 08:43:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:19,338 INFO L93 Difference]: Finished difference Result 615 states and 618 transitions. [2018-07-25 08:43:19,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:43:19,338 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-07-25 08:43:19,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:19,339 INFO L225 Difference]: With dead ends: 615 [2018-07-25 08:43:19,339 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 08:43:19,340 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:43:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 08:43:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-25 08:43:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:43:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-07-25 08:43:19,347 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 406 [2018-07-25 08:43:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:19,347 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-07-25 08:43:19,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:43:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-07-25 08:43:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 08:43:19,349 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:19,349 INFO L354 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 1, 1, 1, 1] [2018-07-25 08:43:19,349 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1909808015, now seen corresponding path program 101 times [2018-07-25 08:43:19,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 10302 trivial. 0 not checked. [2018-07-25 08:43:19,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:19,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:43:19,684 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:43:19,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:43:19,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:43:19,686 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 104 states. [2018-07-25 08:43:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:20,737 INFO L93 Difference]: Finished difference Result 621 states and 624 transitions. [2018-07-25 08:43:20,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:43:20,737 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-07-25 08:43:20,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:20,739 INFO L225 Difference]: With dead ends: 621 [2018-07-25 08:43:20,739 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 08:43:20,740 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:43:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 08:43:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-07-25 08:43:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 08:43:20,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2018-07-25 08:43:20,748 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 410 [2018-07-25 08:43:20,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:20,748 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2018-07-25 08:43:20,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:43:20,748 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2018-07-25 08:43:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 08:43:20,750 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:20,750 INFO L354 BasicCegarLoop]: trace histogram [103, 103, 102, 102, 1, 1, 1, 1] [2018-07-25 08:43:20,751 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:20,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1317898243, now seen corresponding path program 102 times [2018-07-25 08:43:20,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 10506 trivial. 0 not checked. [2018-07-25 08:43:21,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:21,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:43:21,135 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:43:21,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:43:21,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:43:21,137 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand 105 states. [2018-07-25 08:43:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:22,204 INFO L93 Difference]: Finished difference Result 627 states and 630 transitions. [2018-07-25 08:43:22,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:43:22,204 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-07-25 08:43:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:22,205 INFO L225 Difference]: With dead ends: 627 [2018-07-25 08:43:22,205 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 08:43:22,207 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:43:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 08:43:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-25 08:43:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 08:43:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-07-25 08:43:22,214 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 414 [2018-07-25 08:43:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:22,214 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-07-25 08:43:22,214 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:43:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-07-25 08:43:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 08:43:22,216 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:22,216 INFO L354 BasicCegarLoop]: trace histogram [104, 104, 103, 103, 1, 1, 1, 1] [2018-07-25 08:43:22,217 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:22,217 INFO L82 PathProgramCache]: Analyzing trace with hash -87164297, now seen corresponding path program 103 times [2018-07-25 08:43:22,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 10712 trivial. 0 not checked. [2018-07-25 08:43:22,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:22,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:43:22,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:43:22,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:43:22,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:43:22,629 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 106 states. [2018-07-25 08:43:23,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:23,640 INFO L93 Difference]: Finished difference Result 633 states and 636 transitions. [2018-07-25 08:43:23,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:43:23,640 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-07-25 08:43:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:23,641 INFO L225 Difference]: With dead ends: 633 [2018-07-25 08:43:23,641 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 08:43:23,641 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:43:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 08:43:23,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-07-25 08:43:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 08:43:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2018-07-25 08:43:23,648 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 418 [2018-07-25 08:43:23,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:23,648 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2018-07-25 08:43:23,648 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:43:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2018-07-25 08:43:23,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 08:43:23,650 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:23,651 INFO L354 BasicCegarLoop]: trace histogram [105, 105, 104, 104, 1, 1, 1, 1] [2018-07-25 08:43:23,651 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:23,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1956360939, now seen corresponding path program 104 times [2018-07-25 08:43:23,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 10920 trivial. 0 not checked. [2018-07-25 08:43:24,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:24,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:43:24,036 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:43:24,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:43:24,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:43:24,038 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand 107 states. [2018-07-25 08:43:24,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:24,689 INFO L93 Difference]: Finished difference Result 639 states and 642 transitions. [2018-07-25 08:43:24,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:43:24,690 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-07-25 08:43:24,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:24,691 INFO L225 Difference]: With dead ends: 639 [2018-07-25 08:43:24,691 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 08:43:24,692 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:43:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 08:43:24,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-25 08:43:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 08:43:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-07-25 08:43:24,699 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 422 [2018-07-25 08:43:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:24,699 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-07-25 08:43:24,699 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:43:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-07-25 08:43:24,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 08:43:24,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:24,701 INFO L354 BasicCegarLoop]: trace histogram [106, 106, 105, 105, 1, 1, 1, 1] [2018-07-25 08:43:24,702 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:24,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1451511457, now seen corresponding path program 105 times [2018-07-25 08:43:24,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 11130 trivial. 0 not checked. [2018-07-25 08:43:25,141 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:25,141 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:43:25,142 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:43:25,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:43:25,143 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:43:25,143 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand 108 states. [2018-07-25 08:43:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:26,426 INFO L93 Difference]: Finished difference Result 645 states and 648 transitions. [2018-07-25 08:43:26,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:43:26,426 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-07-25 08:43:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:26,427 INFO L225 Difference]: With dead ends: 645 [2018-07-25 08:43:26,427 INFO L226 Difference]: Without dead ends: 431 [2018-07-25 08:43:26,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:43:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-25 08:43:26,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-07-25 08:43:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-25 08:43:26,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2018-07-25 08:43:26,432 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 426 [2018-07-25 08:43:26,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:26,432 INFO L472 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2018-07-25 08:43:26,432 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:43:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2018-07-25 08:43:26,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-25 08:43:26,433 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:26,433 INFO L354 BasicCegarLoop]: trace histogram [107, 107, 106, 106, 1, 1, 1, 1] [2018-07-25 08:43:26,433 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:26,434 INFO L82 PathProgramCache]: Analyzing trace with hash 913503699, now seen corresponding path program 106 times [2018-07-25 08:43:26,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 11342 trivial. 0 not checked. [2018-07-25 08:43:26,802 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:26,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:43:26,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:43:26,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:43:26,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:43:26,804 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand 109 states. [2018-07-25 08:43:27,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:27,611 INFO L93 Difference]: Finished difference Result 651 states and 654 transitions. [2018-07-25 08:43:27,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:43:27,612 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-07-25 08:43:27,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:27,612 INFO L225 Difference]: With dead ends: 651 [2018-07-25 08:43:27,612 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 08:43:27,613 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:43:27,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 08:43:27,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-07-25 08:43:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-25 08:43:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 436 transitions. [2018-07-25 08:43:27,619 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 436 transitions. Word has length 430 [2018-07-25 08:43:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:27,619 INFO L472 AbstractCegarLoop]: Abstraction has 435 states and 436 transitions. [2018-07-25 08:43:27,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:43:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 436 transitions. [2018-07-25 08:43:27,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-25 08:43:27,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:27,622 INFO L354 BasicCegarLoop]: trace histogram [108, 108, 107, 107, 1, 1, 1, 1] [2018-07-25 08:43:27,622 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:27,623 INFO L82 PathProgramCache]: Analyzing trace with hash 671514695, now seen corresponding path program 107 times [2018-07-25 08:43:27,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 23112 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2018-07-25 08:43:28,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:28,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:43:28,135 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:43:28,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:43:28,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:43:28,136 INFO L87 Difference]: Start difference. First operand 435 states and 436 transitions. Second operand 110 states. [2018-07-25 08:43:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:29,047 INFO L93 Difference]: Finished difference Result 657 states and 660 transitions. [2018-07-25 08:43:29,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:43:29,047 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-07-25 08:43:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:29,048 INFO L225 Difference]: With dead ends: 657 [2018-07-25 08:43:29,048 INFO L226 Difference]: Without dead ends: 439 [2018-07-25 08:43:29,048 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:43:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-25 08:43:29,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-07-25 08:43:29,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-07-25 08:43:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 440 transitions. [2018-07-25 08:43:29,052 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 440 transitions. Word has length 434 [2018-07-25 08:43:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:29,052 INFO L472 AbstractCegarLoop]: Abstraction has 439 states and 440 transitions. [2018-07-25 08:43:29,052 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:43:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 440 transitions. [2018-07-25 08:43:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-25 08:43:29,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:29,054 INFO L354 BasicCegarLoop]: trace histogram [109, 109, 108, 108, 1, 1, 1, 1] [2018-07-25 08:43:29,054 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1170517829, now seen corresponding path program 108 times [2018-07-25 08:43:29,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 11772 trivial. 0 not checked. [2018-07-25 08:43:29,428 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:29,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:43:29,428 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:43:29,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:43:29,430 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:43:29,430 INFO L87 Difference]: Start difference. First operand 439 states and 440 transitions. Second operand 111 states. [2018-07-25 08:43:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:30,405 INFO L93 Difference]: Finished difference Result 663 states and 666 transitions. [2018-07-25 08:43:30,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:43:30,405 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 438 [2018-07-25 08:43:30,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:30,406 INFO L225 Difference]: With dead ends: 663 [2018-07-25 08:43:30,406 INFO L226 Difference]: Without dead ends: 443 [2018-07-25 08:43:30,407 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:43:30,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-07-25 08:43:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-07-25 08:43:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-07-25 08:43:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 444 transitions. [2018-07-25 08:43:30,411 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 444 transitions. Word has length 438 [2018-07-25 08:43:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:30,411 INFO L472 AbstractCegarLoop]: Abstraction has 443 states and 444 transitions. [2018-07-25 08:43:30,411 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:43:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 444 transitions. [2018-07-25 08:43:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-25 08:43:30,412 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:30,413 INFO L354 BasicCegarLoop]: trace histogram [110, 110, 109, 109, 1, 1, 1, 1] [2018-07-25 08:43:30,413 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash 412509999, now seen corresponding path program 109 times [2018-07-25 08:43:30,413 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 11990 trivial. 0 not checked. [2018-07-25 08:43:30,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:30,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:43:30,812 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:43:30,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:43:30,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:43:30,813 INFO L87 Difference]: Start difference. First operand 443 states and 444 transitions. Second operand 112 states. [2018-07-25 08:43:31,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:31,716 INFO L93 Difference]: Finished difference Result 669 states and 672 transitions. [2018-07-25 08:43:31,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:43:31,716 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 442 [2018-07-25 08:43:31,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:31,717 INFO L225 Difference]: With dead ends: 669 [2018-07-25 08:43:31,717 INFO L226 Difference]: Without dead ends: 447 [2018-07-25 08:43:31,718 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:43:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-07-25 08:43:31,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-07-25 08:43:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-07-25 08:43:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 448 transitions. [2018-07-25 08:43:31,723 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 448 transitions. Word has length 442 [2018-07-25 08:43:31,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:31,724 INFO L472 AbstractCegarLoop]: Abstraction has 447 states and 448 transitions. [2018-07-25 08:43:31,724 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:43:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 448 transitions. [2018-07-25 08:43:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-07-25 08:43:31,725 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:31,725 INFO L354 BasicCegarLoop]: trace histogram [111, 111, 110, 110, 1, 1, 1, 1] [2018-07-25 08:43:31,725 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:31,725 INFO L82 PathProgramCache]: Analyzing trace with hash 505201571, now seen corresponding path program 110 times [2018-07-25 08:43:31,726 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 24420 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 12210 trivial. 0 not checked. [2018-07-25 08:43:32,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:32,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:43:32,117 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:43:32,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:43:32,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:43:32,118 INFO L87 Difference]: Start difference. First operand 447 states and 448 transitions. Second operand 113 states. [2018-07-25 08:43:33,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:33,392 INFO L93 Difference]: Finished difference Result 675 states and 678 transitions. [2018-07-25 08:43:33,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:43:33,392 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 446 [2018-07-25 08:43:33,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:33,393 INFO L225 Difference]: With dead ends: 675 [2018-07-25 08:43:33,393 INFO L226 Difference]: Without dead ends: 451 [2018-07-25 08:43:33,394 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:43:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-07-25 08:43:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-07-25 08:43:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-07-25 08:43:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 452 transitions. [2018-07-25 08:43:33,400 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 452 transitions. Word has length 446 [2018-07-25 08:43:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:33,400 INFO L472 AbstractCegarLoop]: Abstraction has 451 states and 452 transitions. [2018-07-25 08:43:33,400 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:43:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 452 transitions. [2018-07-25 08:43:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-07-25 08:43:33,402 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:33,403 INFO L354 BasicCegarLoop]: trace histogram [112, 112, 111, 111, 1, 1, 1, 1] [2018-07-25 08:43:33,403 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:33,403 INFO L82 PathProgramCache]: Analyzing trace with hash 357787159, now seen corresponding path program 111 times [2018-07-25 08:43:33,403 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 12432 trivial. 0 not checked. [2018-07-25 08:43:33,798 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:33,798 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:43:33,798 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:43:33,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:43:33,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:43:33,800 INFO L87 Difference]: Start difference. First operand 451 states and 452 transitions. Second operand 114 states. [2018-07-25 08:43:34,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:34,677 INFO L93 Difference]: Finished difference Result 681 states and 684 transitions. [2018-07-25 08:43:34,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:43:34,677 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 450 [2018-07-25 08:43:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:34,678 INFO L225 Difference]: With dead ends: 681 [2018-07-25 08:43:34,678 INFO L226 Difference]: Without dead ends: 455 [2018-07-25 08:43:34,679 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:43:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-07-25 08:43:34,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-07-25 08:43:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-07-25 08:43:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 456 transitions. [2018-07-25 08:43:34,685 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 456 transitions. Word has length 450 [2018-07-25 08:43:34,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:34,686 INFO L472 AbstractCegarLoop]: Abstraction has 455 states and 456 transitions. [2018-07-25 08:43:34,686 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:43:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 456 transitions. [2018-07-25 08:43:34,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-07-25 08:43:34,687 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:34,687 INFO L354 BasicCegarLoop]: trace histogram [113, 113, 112, 112, 1, 1, 1, 1] [2018-07-25 08:43:34,688 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:34,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2017414795, now seen corresponding path program 112 times [2018-07-25 08:43:34,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 12656 trivial. 0 not checked. [2018-07-25 08:43:35,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:35,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:43:35,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:43:35,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:43:35,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:43:35,104 INFO L87 Difference]: Start difference. First operand 455 states and 456 transitions. Second operand 115 states. [2018-07-25 08:43:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:36,681 INFO L93 Difference]: Finished difference Result 687 states and 690 transitions. [2018-07-25 08:43:36,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:43:36,682 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 454 [2018-07-25 08:43:36,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:36,683 INFO L225 Difference]: With dead ends: 687 [2018-07-25 08:43:36,683 INFO L226 Difference]: Without dead ends: 459 [2018-07-25 08:43:36,683 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:43:36,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-07-25 08:43:36,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-07-25 08:43:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-07-25 08:43:36,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 460 transitions. [2018-07-25 08:43:36,688 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 460 transitions. Word has length 454 [2018-07-25 08:43:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:36,688 INFO L472 AbstractCegarLoop]: Abstraction has 459 states and 460 transitions. [2018-07-25 08:43:36,688 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:43:36,688 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 460 transitions. [2018-07-25 08:43:36,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-07-25 08:43:36,690 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:36,690 INFO L354 BasicCegarLoop]: trace histogram [114, 114, 113, 113, 1, 1, 1, 1] [2018-07-25 08:43:36,690 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:36,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1335526145, now seen corresponding path program 113 times [2018-07-25 08:43:36,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 12882 trivial. 0 not checked. [2018-07-25 08:43:37,118 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:37,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:43:37,119 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:43:37,120 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:43:37,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:43:37,121 INFO L87 Difference]: Start difference. First operand 459 states and 460 transitions. Second operand 116 states. [2018-07-25 08:43:38,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:38,442 INFO L93 Difference]: Finished difference Result 693 states and 696 transitions. [2018-07-25 08:43:38,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:43:38,442 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 458 [2018-07-25 08:43:38,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:38,443 INFO L225 Difference]: With dead ends: 693 [2018-07-25 08:43:38,443 INFO L226 Difference]: Without dead ends: 463 [2018-07-25 08:43:38,444 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:43:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-07-25 08:43:38,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2018-07-25 08:43:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-07-25 08:43:38,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 464 transitions. [2018-07-25 08:43:38,450 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 464 transitions. Word has length 458 [2018-07-25 08:43:38,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:38,450 INFO L472 AbstractCegarLoop]: Abstraction has 463 states and 464 transitions. [2018-07-25 08:43:38,450 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:43:38,450 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 464 transitions. [2018-07-25 08:43:38,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-07-25 08:43:38,452 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:38,452 INFO L354 BasicCegarLoop]: trace histogram [115, 115, 114, 114, 1, 1, 1, 1] [2018-07-25 08:43:38,452 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:38,452 INFO L82 PathProgramCache]: Analyzing trace with hash -691342989, now seen corresponding path program 114 times [2018-07-25 08:43:38,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 13110 trivial. 0 not checked. [2018-07-25 08:43:38,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:38,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:43:38,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:43:38,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:43:38,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:43:38,963 INFO L87 Difference]: Start difference. First operand 463 states and 464 transitions. Second operand 117 states. [2018-07-25 08:43:39,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:39,967 INFO L93 Difference]: Finished difference Result 699 states and 702 transitions. [2018-07-25 08:43:39,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:43:39,968 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 462 [2018-07-25 08:43:39,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:39,968 INFO L225 Difference]: With dead ends: 699 [2018-07-25 08:43:39,969 INFO L226 Difference]: Without dead ends: 467 [2018-07-25 08:43:39,969 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:43:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2018-07-25 08:43:39,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2018-07-25 08:43:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-07-25 08:43:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 468 transitions. [2018-07-25 08:43:39,973 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 468 transitions. Word has length 462 [2018-07-25 08:43:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:39,974 INFO L472 AbstractCegarLoop]: Abstraction has 467 states and 468 transitions. [2018-07-25 08:43:39,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:43:39,974 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 468 transitions. [2018-07-25 08:43:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-07-25 08:43:39,975 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:39,975 INFO L354 BasicCegarLoop]: trace histogram [116, 116, 115, 115, 1, 1, 1, 1] [2018-07-25 08:43:39,975 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:39,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1945414631, now seen corresponding path program 115 times [2018-07-25 08:43:39,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 13340 trivial. 0 not checked. [2018-07-25 08:43:40,442 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:40,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:43:40,443 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:43:40,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:43:40,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:43:40,444 INFO L87 Difference]: Start difference. First operand 467 states and 468 transitions. Second operand 118 states. [2018-07-25 08:43:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:42,254 INFO L93 Difference]: Finished difference Result 705 states and 708 transitions. [2018-07-25 08:43:42,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:43:42,255 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 466 [2018-07-25 08:43:42,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:42,256 INFO L225 Difference]: With dead ends: 705 [2018-07-25 08:43:42,256 INFO L226 Difference]: Without dead ends: 471 [2018-07-25 08:43:42,257 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:43:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-07-25 08:43:42,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2018-07-25 08:43:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2018-07-25 08:43:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 472 transitions. [2018-07-25 08:43:42,261 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 472 transitions. Word has length 466 [2018-07-25 08:43:42,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:42,261 INFO L472 AbstractCegarLoop]: Abstraction has 471 states and 472 transitions. [2018-07-25 08:43:42,261 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:43:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 472 transitions. [2018-07-25 08:43:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-07-25 08:43:42,263 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:42,263 INFO L354 BasicCegarLoop]: trace histogram [117, 117, 116, 116, 1, 1, 1, 1] [2018-07-25 08:43:42,263 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:42,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1072147547, now seen corresponding path program 116 times [2018-07-25 08:43:42,263 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 27144 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 13572 trivial. 0 not checked. [2018-07-25 08:43:42,703 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:42,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:43:42,704 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:43:42,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:43:42,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:43:42,705 INFO L87 Difference]: Start difference. First operand 471 states and 472 transitions. Second operand 119 states. [2018-07-25 08:43:44,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:44,490 INFO L93 Difference]: Finished difference Result 711 states and 714 transitions. [2018-07-25 08:43:44,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:43:44,490 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 470 [2018-07-25 08:43:44,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:44,491 INFO L225 Difference]: With dead ends: 711 [2018-07-25 08:43:44,491 INFO L226 Difference]: Without dead ends: 475 [2018-07-25 08:43:44,492 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:43:44,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2018-07-25 08:43:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2018-07-25 08:43:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-07-25 08:43:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 476 transitions. [2018-07-25 08:43:44,496 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 476 transitions. Word has length 470 [2018-07-25 08:43:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:44,497 INFO L472 AbstractCegarLoop]: Abstraction has 475 states and 476 transitions. [2018-07-25 08:43:44,497 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:43:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 476 transitions. [2018-07-25 08:43:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-07-25 08:43:44,498 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:44,498 INFO L354 BasicCegarLoop]: trace histogram [118, 118, 117, 117, 1, 1, 1, 1] [2018-07-25 08:43:44,498 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:44,499 INFO L82 PathProgramCache]: Analyzing trace with hash -500632881, now seen corresponding path program 117 times [2018-07-25 08:43:44,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 13806 trivial. 0 not checked. [2018-07-25 08:43:44,952 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:44,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:43:44,952 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:43:44,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:43:44,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:43:44,954 INFO L87 Difference]: Start difference. First operand 475 states and 476 transitions. Second operand 120 states. [2018-07-25 08:43:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:45,976 INFO L93 Difference]: Finished difference Result 717 states and 720 transitions. [2018-07-25 08:43:45,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:43:45,977 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 474 [2018-07-25 08:43:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:45,977 INFO L225 Difference]: With dead ends: 717 [2018-07-25 08:43:45,977 INFO L226 Difference]: Without dead ends: 479 [2018-07-25 08:43:45,978 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:43:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-07-25 08:43:46,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-07-25 08:43:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-07-25 08:43:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 480 transitions. [2018-07-25 08:43:46,019 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 480 transitions. Word has length 474 [2018-07-25 08:43:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:46,019 INFO L472 AbstractCegarLoop]: Abstraction has 479 states and 480 transitions. [2018-07-25 08:43:46,019 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:43:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 480 transitions. [2018-07-25 08:43:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-07-25 08:43:46,020 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:46,021 INFO L354 BasicCegarLoop]: trace histogram [119, 119, 118, 118, 1, 1, 1, 1] [2018-07-25 08:43:46,021 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:46,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1312981181, now seen corresponding path program 118 times [2018-07-25 08:43:46,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 14042 trivial. 0 not checked. [2018-07-25 08:43:46,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:46,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:43:46,489 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:43:46,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:43:46,490 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:43:46,491 INFO L87 Difference]: Start difference. First operand 479 states and 480 transitions. Second operand 121 states. [2018-07-25 08:43:47,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:47,676 INFO L93 Difference]: Finished difference Result 723 states and 726 transitions. [2018-07-25 08:43:47,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:43:47,676 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 478 [2018-07-25 08:43:47,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:47,677 INFO L225 Difference]: With dead ends: 723 [2018-07-25 08:43:47,677 INFO L226 Difference]: Without dead ends: 483 [2018-07-25 08:43:47,678 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:43:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-07-25 08:43:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2018-07-25 08:43:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2018-07-25 08:43:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 484 transitions. [2018-07-25 08:43:47,682 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 484 transitions. Word has length 478 [2018-07-25 08:43:47,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:47,683 INFO L472 AbstractCegarLoop]: Abstraction has 483 states and 484 transitions. [2018-07-25 08:43:47,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:43:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 484 transitions. [2018-07-25 08:43:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-07-25 08:43:47,685 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:47,685 INFO L354 BasicCegarLoop]: trace histogram [120, 120, 119, 119, 1, 1, 1, 1] [2018-07-25 08:43:47,686 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:47,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1965707703, now seen corresponding path program 119 times [2018-07-25 08:43:47,686 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2018-07-25 08:43:48,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:48,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:43:48,140 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:43:48,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:43:48,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:43:48,142 INFO L87 Difference]: Start difference. First operand 483 states and 484 transitions. Second operand 122 states. [2018-07-25 08:43:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:49,988 INFO L93 Difference]: Finished difference Result 729 states and 732 transitions. [2018-07-25 08:43:49,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:43:49,988 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 482 [2018-07-25 08:43:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:49,989 INFO L225 Difference]: With dead ends: 729 [2018-07-25 08:43:49,989 INFO L226 Difference]: Without dead ends: 487 [2018-07-25 08:43:49,991 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:43:49,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-07-25 08:43:49,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2018-07-25 08:43:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2018-07-25 08:43:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 488 transitions. [2018-07-25 08:43:49,996 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 488 transitions. Word has length 482 [2018-07-25 08:43:49,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:49,997 INFO L472 AbstractCegarLoop]: Abstraction has 487 states and 488 transitions. [2018-07-25 08:43:49,997 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:43:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 488 transitions. [2018-07-25 08:43:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-07-25 08:43:49,998 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:49,998 INFO L354 BasicCegarLoop]: trace histogram [121, 121, 120, 120, 1, 1, 1, 1] [2018-07-25 08:43:49,999 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:49,999 INFO L82 PathProgramCache]: Analyzing trace with hash 578054699, now seen corresponding path program 120 times [2018-07-25 08:43:49,999 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 29040 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 14520 trivial. 0 not checked. [2018-07-25 08:43:50,471 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:50,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:43:50,471 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:43:50,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:43:50,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:43:50,472 INFO L87 Difference]: Start difference. First operand 487 states and 488 transitions. Second operand 123 states. [2018-07-25 08:43:52,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:52,447 INFO L93 Difference]: Finished difference Result 735 states and 738 transitions. [2018-07-25 08:43:52,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:43:52,447 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 486 [2018-07-25 08:43:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:52,448 INFO L225 Difference]: With dead ends: 735 [2018-07-25 08:43:52,448 INFO L226 Difference]: Without dead ends: 491 [2018-07-25 08:43:52,449 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:43:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-07-25 08:43:52,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2018-07-25 08:43:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-07-25 08:43:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 492 transitions. [2018-07-25 08:43:52,453 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 492 transitions. Word has length 486 [2018-07-25 08:43:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:52,453 INFO L472 AbstractCegarLoop]: Abstraction has 491 states and 492 transitions. [2018-07-25 08:43:52,454 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:43:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 492 transitions. [2018-07-25 08:43:52,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-07-25 08:43:52,455 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:52,455 INFO L354 BasicCegarLoop]: trace histogram [122, 122, 121, 121, 1, 1, 1, 1] [2018-07-25 08:43:52,455 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:52,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1625241441, now seen corresponding path program 121 times [2018-07-25 08:43:52,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 14762 trivial. 0 not checked. [2018-07-25 08:43:53,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:53,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:43:53,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:43:53,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:43:53,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:43:53,048 INFO L87 Difference]: Start difference. First operand 491 states and 492 transitions. Second operand 124 states. [2018-07-25 08:43:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:54,576 INFO L93 Difference]: Finished difference Result 741 states and 744 transitions. [2018-07-25 08:43:54,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:43:54,576 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 490 [2018-07-25 08:43:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:54,577 INFO L225 Difference]: With dead ends: 741 [2018-07-25 08:43:54,577 INFO L226 Difference]: Without dead ends: 495 [2018-07-25 08:43:54,577 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:43:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-07-25 08:43:54,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2018-07-25 08:43:54,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-07-25 08:43:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 496 transitions. [2018-07-25 08:43:54,582 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 496 transitions. Word has length 490 [2018-07-25 08:43:54,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:54,582 INFO L472 AbstractCegarLoop]: Abstraction has 495 states and 496 transitions. [2018-07-25 08:43:54,582 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:43:54,582 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 496 transitions. [2018-07-25 08:43:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-07-25 08:43:54,584 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:54,584 INFO L354 BasicCegarLoop]: trace histogram [123, 123, 122, 122, 1, 1, 1, 1] [2018-07-25 08:43:54,584 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:54,584 INFO L82 PathProgramCache]: Analyzing trace with hash -2144047853, now seen corresponding path program 122 times [2018-07-25 08:43:54,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30012 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 15006 trivial. 0 not checked. [2018-07-25 08:43:55,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:55,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:43:55,068 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:43:55,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:43:55,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:43:55,070 INFO L87 Difference]: Start difference. First operand 495 states and 496 transitions. Second operand 125 states. [2018-07-25 08:43:56,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:56,184 INFO L93 Difference]: Finished difference Result 747 states and 750 transitions. [2018-07-25 08:43:56,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:43:56,184 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 494 [2018-07-25 08:43:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:56,185 INFO L225 Difference]: With dead ends: 747 [2018-07-25 08:43:56,185 INFO L226 Difference]: Without dead ends: 499 [2018-07-25 08:43:56,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:43:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-07-25 08:43:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2018-07-25 08:43:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2018-07-25 08:43:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 500 transitions. [2018-07-25 08:43:56,194 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 500 transitions. Word has length 494 [2018-07-25 08:43:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:56,194 INFO L472 AbstractCegarLoop]: Abstraction has 499 states and 500 transitions. [2018-07-25 08:43:56,194 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:43:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 500 transitions. [2018-07-25 08:43:56,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-07-25 08:43:56,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:56,197 INFO L354 BasicCegarLoop]: trace histogram [124, 124, 123, 123, 1, 1, 1, 1] [2018-07-25 08:43:56,197 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:56,198 INFO L82 PathProgramCache]: Analyzing trace with hash -902539385, now seen corresponding path program 123 times [2018-07-25 08:43:56,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 15252 trivial. 0 not checked. [2018-07-25 08:43:56,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:56,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:43:56,747 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:43:56,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:43:56,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:43:56,749 INFO L87 Difference]: Start difference. First operand 499 states and 500 transitions. Second operand 126 states. [2018-07-25 08:43:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:58,710 INFO L93 Difference]: Finished difference Result 753 states and 756 transitions. [2018-07-25 08:43:58,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:43:58,710 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 498 [2018-07-25 08:43:58,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:58,711 INFO L225 Difference]: With dead ends: 753 [2018-07-25 08:43:58,711 INFO L226 Difference]: Without dead ends: 503 [2018-07-25 08:43:58,713 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:43:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2018-07-25 08:43:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2018-07-25 08:43:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2018-07-25 08:43:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 504 transitions. [2018-07-25 08:43:58,720 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 504 transitions. Word has length 498 [2018-07-25 08:43:58,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:58,720 INFO L472 AbstractCegarLoop]: Abstraction has 503 states and 504 transitions. [2018-07-25 08:43:58,720 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:43:58,720 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 504 transitions. [2018-07-25 08:43:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-07-25 08:43:58,723 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:58,723 INFO L354 BasicCegarLoop]: trace histogram [125, 125, 124, 124, 1, 1, 1, 1] [2018-07-25 08:43:58,723 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:58,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1322940421, now seen corresponding path program 124 times [2018-07-25 08:43:58,723 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 31000 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 15500 trivial. 0 not checked. [2018-07-25 08:43:59,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:59,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:43:59,325 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:43:59,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:43:59,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:43:59,326 INFO L87 Difference]: Start difference. First operand 503 states and 504 transitions. Second operand 127 states. [2018-07-25 08:44:01,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:01,026 INFO L93 Difference]: Finished difference Result 759 states and 762 transitions. [2018-07-25 08:44:01,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:44:01,026 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 502 [2018-07-25 08:44:01,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:01,027 INFO L225 Difference]: With dead ends: 759 [2018-07-25 08:44:01,027 INFO L226 Difference]: Without dead ends: 507 [2018-07-25 08:44:01,028 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:44:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-07-25 08:44:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2018-07-25 08:44:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2018-07-25 08:44:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 508 transitions. [2018-07-25 08:44:01,032 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 508 transitions. Word has length 502 [2018-07-25 08:44:01,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:01,032 INFO L472 AbstractCegarLoop]: Abstraction has 507 states and 508 transitions. [2018-07-25 08:44:01,032 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:44:01,032 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 508 transitions. [2018-07-25 08:44:01,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-07-25 08:44:01,034 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:01,034 INFO L354 BasicCegarLoop]: trace histogram [126, 126, 125, 125, 1, 1, 1, 1] [2018-07-25 08:44:01,034 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:01,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1485635183, now seen corresponding path program 125 times [2018-07-25 08:44:01,035 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 15750 trivial. 0 not checked. [2018-07-25 08:44:01,539 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:01,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:44:01,540 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:44:01,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:44:01,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:44:01,542 INFO L87 Difference]: Start difference. First operand 507 states and 508 transitions. Second operand 128 states. [2018-07-25 08:44:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:03,021 INFO L93 Difference]: Finished difference Result 765 states and 768 transitions. [2018-07-25 08:44:03,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:44:03,021 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 506 [2018-07-25 08:44:03,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:03,022 INFO L225 Difference]: With dead ends: 765 [2018-07-25 08:44:03,022 INFO L226 Difference]: Without dead ends: 511 [2018-07-25 08:44:03,023 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:44:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-07-25 08:44:03,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2018-07-25 08:44:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2018-07-25 08:44:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 512 transitions. [2018-07-25 08:44:03,030 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 512 transitions. Word has length 506 [2018-07-25 08:44:03,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:03,031 INFO L472 AbstractCegarLoop]: Abstraction has 511 states and 512 transitions. [2018-07-25 08:44:03,031 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:44:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 512 transitions. [2018-07-25 08:44:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-07-25 08:44:03,033 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:03,034 INFO L354 BasicCegarLoop]: trace histogram [127, 127, 126, 126, 1, 1, 1, 1] [2018-07-25 08:44:03,034 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:03,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1821394205, now seen corresponding path program 126 times [2018-07-25 08:44:03,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 32004 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 16002 trivial. 0 not checked. [2018-07-25 08:44:03,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:03,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:44:03,626 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:44:03,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:44:03,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:44:03,628 INFO L87 Difference]: Start difference. First operand 511 states and 512 transitions. Second operand 129 states. [2018-07-25 08:44:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:06,264 INFO L93 Difference]: Finished difference Result 771 states and 774 transitions. [2018-07-25 08:44:06,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:44:06,264 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 510 [2018-07-25 08:44:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:06,266 INFO L225 Difference]: With dead ends: 771 [2018-07-25 08:44:06,266 INFO L226 Difference]: Without dead ends: 515 [2018-07-25 08:44:06,267 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:44:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-07-25 08:44:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-07-25 08:44:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-07-25 08:44:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 516 transitions. [2018-07-25 08:44:06,275 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 516 transitions. Word has length 510 [2018-07-25 08:44:06,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:06,275 INFO L472 AbstractCegarLoop]: Abstraction has 515 states and 516 transitions. [2018-07-25 08:44:06,275 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:44:06,275 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 516 transitions. [2018-07-25 08:44:06,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-07-25 08:44:06,278 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:06,278 INFO L354 BasicCegarLoop]: trace histogram [128, 128, 127, 127, 1, 1, 1, 1] [2018-07-25 08:44:06,278 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:06,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1538081449, now seen corresponding path program 127 times [2018-07-25 08:44:06,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 32512 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 16256 trivial. 0 not checked. [2018-07-25 08:44:07,196 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:07,196 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:44:07,200 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:44:07,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:44:07,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:44:07,202 INFO L87 Difference]: Start difference. First operand 515 states and 516 transitions. Second operand 130 states. [2018-07-25 08:44:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:08,495 INFO L93 Difference]: Finished difference Result 777 states and 780 transitions. [2018-07-25 08:44:08,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:44:08,495 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 514 [2018-07-25 08:44:08,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:08,496 INFO L225 Difference]: With dead ends: 777 [2018-07-25 08:44:08,496 INFO L226 Difference]: Without dead ends: 519 [2018-07-25 08:44:08,497 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:44:08,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2018-07-25 08:44:08,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2018-07-25 08:44:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2018-07-25 08:44:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 520 transitions. [2018-07-25 08:44:08,503 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 520 transitions. Word has length 514 [2018-07-25 08:44:08,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:08,503 INFO L472 AbstractCegarLoop]: Abstraction has 519 states and 520 transitions. [2018-07-25 08:44:08,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:44:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 520 transitions. [2018-07-25 08:44:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-07-25 08:44:08,506 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:08,506 INFO L354 BasicCegarLoop]: trace histogram [129, 129, 128, 128, 1, 1, 1, 1] [2018-07-25 08:44:08,506 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:08,506 INFO L82 PathProgramCache]: Analyzing trace with hash -46463541, now seen corresponding path program 128 times [2018-07-25 08:44:08,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 16512 trivial. 0 not checked. [2018-07-25 08:44:09,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:09,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:44:09,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:44:09,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:44:09,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:44:09,084 INFO L87 Difference]: Start difference. First operand 519 states and 520 transitions. Second operand 131 states. [2018-07-25 08:44:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:11,260 INFO L93 Difference]: Finished difference Result 783 states and 786 transitions. [2018-07-25 08:44:11,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:44:11,261 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 518 [2018-07-25 08:44:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:11,262 INFO L225 Difference]: With dead ends: 783 [2018-07-25 08:44:11,262 INFO L226 Difference]: Without dead ends: 523 [2018-07-25 08:44:11,264 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:44:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2018-07-25 08:44:11,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2018-07-25 08:44:11,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2018-07-25 08:44:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 524 transitions. [2018-07-25 08:44:11,271 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 524 transitions. Word has length 518 [2018-07-25 08:44:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:11,272 INFO L472 AbstractCegarLoop]: Abstraction has 523 states and 524 transitions. [2018-07-25 08:44:11,272 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:44:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 524 transitions. [2018-07-25 08:44:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-07-25 08:44:11,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:11,275 INFO L354 BasicCegarLoop]: trace histogram [130, 130, 129, 129, 1, 1, 1, 1] [2018-07-25 08:44:11,275 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:11,275 INFO L82 PathProgramCache]: Analyzing trace with hash -5401537, now seen corresponding path program 129 times [2018-07-25 08:44:11,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 33540 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 16770 trivial. 0 not checked. [2018-07-25 08:44:11,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:11,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:44:11,906 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:44:11,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:44:11,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:44:11,908 INFO L87 Difference]: Start difference. First operand 523 states and 524 transitions. Second operand 132 states. [2018-07-25 08:44:14,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:14,882 INFO L93 Difference]: Finished difference Result 789 states and 792 transitions. [2018-07-25 08:44:14,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:44:14,883 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 522 [2018-07-25 08:44:14,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:14,883 INFO L225 Difference]: With dead ends: 789 [2018-07-25 08:44:14,883 INFO L226 Difference]: Without dead ends: 527 [2018-07-25 08:44:14,885 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:44:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-07-25 08:44:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2018-07-25 08:44:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-07-25 08:44:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 528 transitions. [2018-07-25 08:44:14,889 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 528 transitions. Word has length 522 [2018-07-25 08:44:14,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:14,889 INFO L472 AbstractCegarLoop]: Abstraction has 527 states and 528 transitions. [2018-07-25 08:44:14,890 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:44:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 528 transitions. [2018-07-25 08:44:14,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-07-25 08:44:14,891 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:14,891 INFO L354 BasicCegarLoop]: trace histogram [131, 131, 130, 130, 1, 1, 1, 1] [2018-07-25 08:44:14,891 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:14,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1129355085, now seen corresponding path program 130 times [2018-07-25 08:44:14,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 17030 trivial. 0 not checked. [2018-07-25 08:44:15,503 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:15,503 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:44:15,504 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:44:15,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:44:15,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:44:15,505 INFO L87 Difference]: Start difference. First operand 527 states and 528 transitions. Second operand 133 states. [2018-07-25 08:44:16,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:16,866 INFO L93 Difference]: Finished difference Result 795 states and 798 transitions. [2018-07-25 08:44:16,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:44:16,866 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 526 [2018-07-25 08:44:16,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:16,867 INFO L225 Difference]: With dead ends: 795 [2018-07-25 08:44:16,867 INFO L226 Difference]: Without dead ends: 531 [2018-07-25 08:44:16,868 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:44:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-07-25 08:44:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2018-07-25 08:44:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2018-07-25 08:44:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 532 transitions. [2018-07-25 08:44:16,875 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 532 transitions. Word has length 526 [2018-07-25 08:44:16,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:16,876 INFO L472 AbstractCegarLoop]: Abstraction has 531 states and 532 transitions. [2018-07-25 08:44:16,876 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:44:16,876 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 532 transitions. [2018-07-25 08:44:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-07-25 08:44:16,879 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:16,879 INFO L354 BasicCegarLoop]: trace histogram [132, 132, 131, 131, 1, 1, 1, 1] [2018-07-25 08:44:16,879 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:16,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1262124249, now seen corresponding path program 131 times [2018-07-25 08:44:16,879 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 34584 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 17292 trivial. 0 not checked. [2018-07-25 08:44:17,438 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:17,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:44:17,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:44:17,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:44:17,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:44:17,441 INFO L87 Difference]: Start difference. First operand 531 states and 532 transitions. Second operand 134 states. [2018-07-25 08:44:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:18,992 INFO L93 Difference]: Finished difference Result 801 states and 804 transitions. [2018-07-25 08:44:18,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:44:18,992 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 530 [2018-07-25 08:44:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:18,993 INFO L225 Difference]: With dead ends: 801 [2018-07-25 08:44:18,993 INFO L226 Difference]: Without dead ends: 535 [2018-07-25 08:44:18,994 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:44:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-07-25 08:44:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2018-07-25 08:44:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2018-07-25 08:44:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 536 transitions. [2018-07-25 08:44:19,001 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 536 transitions. Word has length 530 [2018-07-25 08:44:19,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:19,002 INFO L472 AbstractCegarLoop]: Abstraction has 535 states and 536 transitions. [2018-07-25 08:44:19,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:44:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 536 transitions. [2018-07-25 08:44:19,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-07-25 08:44:19,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:19,005 INFO L354 BasicCegarLoop]: trace histogram [133, 133, 132, 132, 1, 1, 1, 1] [2018-07-25 08:44:19,005 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:19,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1745558629, now seen corresponding path program 132 times [2018-07-25 08:44:19,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 35112 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 17556 trivial. 0 not checked. [2018-07-25 08:44:19,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:19,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:44:19,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:44:19,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:44:19,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:44:19,669 INFO L87 Difference]: Start difference. First operand 535 states and 536 transitions. Second operand 135 states. [2018-07-25 08:44:21,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:21,377 INFO L93 Difference]: Finished difference Result 807 states and 810 transitions. [2018-07-25 08:44:21,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:44:21,377 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 534 [2018-07-25 08:44:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:21,378 INFO L225 Difference]: With dead ends: 807 [2018-07-25 08:44:21,378 INFO L226 Difference]: Without dead ends: 539 [2018-07-25 08:44:21,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:44:21,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2018-07-25 08:44:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2018-07-25 08:44:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-07-25 08:44:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 540 transitions. [2018-07-25 08:44:21,384 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 540 transitions. Word has length 534 [2018-07-25 08:44:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:21,384 INFO L472 AbstractCegarLoop]: Abstraction has 539 states and 540 transitions. [2018-07-25 08:44:21,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:44:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 540 transitions. [2018-07-25 08:44:21,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-07-25 08:44:21,386 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:21,386 INFO L354 BasicCegarLoop]: trace histogram [134, 134, 133, 133, 1, 1, 1, 1] [2018-07-25 08:44:21,386 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:21,387 INFO L82 PathProgramCache]: Analyzing trace with hash 96635407, now seen corresponding path program 133 times [2018-07-25 08:44:21,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 17822 trivial. 0 not checked. [2018-07-25 08:44:22,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:22,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:44:22,005 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:44:22,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:44:22,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:44:22,007 INFO L87 Difference]: Start difference. First operand 539 states and 540 transitions. Second operand 136 states. [2018-07-25 08:44:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:23,431 INFO L93 Difference]: Finished difference Result 813 states and 816 transitions. [2018-07-25 08:44:23,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:44:23,431 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 538 [2018-07-25 08:44:23,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:23,432 INFO L225 Difference]: With dead ends: 813 [2018-07-25 08:44:23,432 INFO L226 Difference]: Without dead ends: 543 [2018-07-25 08:44:23,433 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:44:23,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-07-25 08:44:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2018-07-25 08:44:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2018-07-25 08:44:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 544 transitions. [2018-07-25 08:44:23,437 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 544 transitions. Word has length 538 [2018-07-25 08:44:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:23,437 INFO L472 AbstractCegarLoop]: Abstraction has 543 states and 544 transitions. [2018-07-25 08:44:23,437 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:44:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 544 transitions. [2018-07-25 08:44:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-07-25 08:44:23,439 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:23,439 INFO L354 BasicCegarLoop]: trace histogram [135, 135, 134, 134, 1, 1, 1, 1] [2018-07-25 08:44:23,440 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:23,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1295218307, now seen corresponding path program 134 times [2018-07-25 08:44:23,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 36180 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 18090 trivial. 0 not checked. [2018-07-25 08:44:24,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:24,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:44:24,143 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:44:24,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:44:24,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:44:24,145 INFO L87 Difference]: Start difference. First operand 543 states and 544 transitions. Second operand 137 states. [2018-07-25 08:44:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:25,878 INFO L93 Difference]: Finished difference Result 819 states and 822 transitions. [2018-07-25 08:44:25,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:44:25,878 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 542 [2018-07-25 08:44:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:25,879 INFO L225 Difference]: With dead ends: 819 [2018-07-25 08:44:25,879 INFO L226 Difference]: Without dead ends: 547 [2018-07-25 08:44:25,880 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:44:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2018-07-25 08:44:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2018-07-25 08:44:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2018-07-25 08:44:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 548 transitions. [2018-07-25 08:44:25,885 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 548 transitions. Word has length 542 [2018-07-25 08:44:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:25,885 INFO L472 AbstractCegarLoop]: Abstraction has 547 states and 548 transitions. [2018-07-25 08:44:25,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:44:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 548 transitions. [2018-07-25 08:44:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-07-25 08:44:25,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:25,887 INFO L354 BasicCegarLoop]: trace histogram [136, 136, 135, 135, 1, 1, 1, 1] [2018-07-25 08:44:25,887 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:25,887 INFO L82 PathProgramCache]: Analyzing trace with hash 751610103, now seen corresponding path program 135 times [2018-07-25 08:44:25,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 36720 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 18360 trivial. 0 not checked. [2018-07-25 08:44:26,555 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:26,555 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:44:26,555 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:44:26,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:44:26,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:44:26,557 INFO L87 Difference]: Start difference. First operand 547 states and 548 transitions. Second operand 138 states. [2018-07-25 08:44:30,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:30,132 INFO L93 Difference]: Finished difference Result 825 states and 828 transitions. [2018-07-25 08:44:30,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:44:30,132 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 546 [2018-07-25 08:44:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:30,133 INFO L225 Difference]: With dead ends: 825 [2018-07-25 08:44:30,133 INFO L226 Difference]: Without dead ends: 551 [2018-07-25 08:44:30,134 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:44:30,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2018-07-25 08:44:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2018-07-25 08:44:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2018-07-25 08:44:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 552 transitions. [2018-07-25 08:44:30,139 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 552 transitions. Word has length 546 [2018-07-25 08:44:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:30,139 INFO L472 AbstractCegarLoop]: Abstraction has 551 states and 552 transitions. [2018-07-25 08:44:30,139 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:44:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 552 transitions. [2018-07-25 08:44:30,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-07-25 08:44:30,141 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:30,141 INFO L354 BasicCegarLoop]: trace histogram [137, 137, 136, 136, 1, 1, 1, 1] [2018-07-25 08:44:30,141 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:30,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1835851413, now seen corresponding path program 136 times [2018-07-25 08:44:30,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 37264 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 18632 trivial. 0 not checked. [2018-07-25 08:44:30,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:30,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:44:30,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:44:30,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:44:30,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:44:30,768 INFO L87 Difference]: Start difference. First operand 551 states and 552 transitions. Second operand 139 states. [2018-07-25 08:44:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:33,559 INFO L93 Difference]: Finished difference Result 831 states and 834 transitions. [2018-07-25 08:44:33,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:44:33,559 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 550 [2018-07-25 08:44:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:33,560 INFO L225 Difference]: With dead ends: 831 [2018-07-25 08:44:33,560 INFO L226 Difference]: Without dead ends: 555 [2018-07-25 08:44:33,561 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:44:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2018-07-25 08:44:33,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2018-07-25 08:44:33,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2018-07-25 08:44:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 556 transitions. [2018-07-25 08:44:33,569 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 556 transitions. Word has length 550 [2018-07-25 08:44:33,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:33,569 INFO L472 AbstractCegarLoop]: Abstraction has 555 states and 556 transitions. [2018-07-25 08:44:33,569 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:44:33,569 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 556 transitions. [2018-07-25 08:44:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-07-25 08:44:33,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:33,572 INFO L354 BasicCegarLoop]: trace histogram [138, 138, 137, 137, 1, 1, 1, 1] [2018-07-25 08:44:33,572 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:33,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1544282079, now seen corresponding path program 137 times [2018-07-25 08:44:33,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 37812 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 18906 trivial. 0 not checked. [2018-07-25 08:44:34,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:34,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:44:34,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:44:34,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:44:34,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:44:34,242 INFO L87 Difference]: Start difference. First operand 555 states and 556 transitions. Second operand 140 states. [2018-07-25 08:44:36,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:36,049 INFO L93 Difference]: Finished difference Result 837 states and 840 transitions. [2018-07-25 08:44:36,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:44:36,049 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 554 [2018-07-25 08:44:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:36,050 INFO L225 Difference]: With dead ends: 837 [2018-07-25 08:44:36,050 INFO L226 Difference]: Without dead ends: 559 [2018-07-25 08:44:36,051 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:44:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2018-07-25 08:44:36,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2018-07-25 08:44:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2018-07-25 08:44:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 560 transitions. [2018-07-25 08:44:36,057 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 560 transitions. Word has length 554 [2018-07-25 08:44:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:36,057 INFO L472 AbstractCegarLoop]: Abstraction has 559 states and 560 transitions. [2018-07-25 08:44:36,057 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:44:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 560 transitions. [2018-07-25 08:44:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-07-25 08:44:36,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:36,059 INFO L354 BasicCegarLoop]: trace histogram [139, 139, 138, 138, 1, 1, 1, 1] [2018-07-25 08:44:36,059 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:36,059 INFO L82 PathProgramCache]: Analyzing trace with hash 373023827, now seen corresponding path program 138 times [2018-07-25 08:44:36,059 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 38364 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 19182 trivial. 0 not checked. [2018-07-25 08:44:36,725 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:36,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:44:36,726 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:44:36,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:44:36,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:44:36,727 INFO L87 Difference]: Start difference. First operand 559 states and 560 transitions. Second operand 141 states. [2018-07-25 08:44:40,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:40,002 INFO L93 Difference]: Finished difference Result 843 states and 846 transitions. [2018-07-25 08:44:40,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:44:40,002 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 558 [2018-07-25 08:44:40,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:40,003 INFO L225 Difference]: With dead ends: 843 [2018-07-25 08:44:40,003 INFO L226 Difference]: Without dead ends: 563 [2018-07-25 08:44:40,004 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:44:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2018-07-25 08:44:40,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2018-07-25 08:44:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2018-07-25 08:44:40,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 564 transitions. [2018-07-25 08:44:40,008 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 564 transitions. Word has length 558 [2018-07-25 08:44:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:40,009 INFO L472 AbstractCegarLoop]: Abstraction has 563 states and 564 transitions. [2018-07-25 08:44:40,009 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:44:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 564 transitions. [2018-07-25 08:44:40,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-07-25 08:44:40,011 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:40,011 INFO L354 BasicCegarLoop]: trace histogram [140, 140, 139, 139, 1, 1, 1, 1] [2018-07-25 08:44:40,011 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:40,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1113051449, now seen corresponding path program 139 times [2018-07-25 08:44:40,011 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 38920 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 19460 trivial. 0 not checked. [2018-07-25 08:44:40,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:40,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:44:40,631 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:44:40,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:44:40,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:44:40,633 INFO L87 Difference]: Start difference. First operand 563 states and 564 transitions. Second operand 142 states. [2018-07-25 08:44:42,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:42,599 INFO L93 Difference]: Finished difference Result 849 states and 852 transitions. [2018-07-25 08:44:42,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:44:42,599 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 562 [2018-07-25 08:44:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:42,600 INFO L225 Difference]: With dead ends: 849 [2018-07-25 08:44:42,600 INFO L226 Difference]: Without dead ends: 567 [2018-07-25 08:44:42,602 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:44:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2018-07-25 08:44:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2018-07-25 08:44:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2018-07-25 08:44:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 568 transitions. [2018-07-25 08:44:42,607 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 568 transitions. Word has length 562 [2018-07-25 08:44:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:42,607 INFO L472 AbstractCegarLoop]: Abstraction has 567 states and 568 transitions. [2018-07-25 08:44:42,607 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:44:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 568 transitions. [2018-07-25 08:44:42,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-07-25 08:44:42,609 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,609 INFO L354 BasicCegarLoop]: trace histogram [141, 141, 140, 140, 1, 1, 1, 1] [2018-07-25 08:44:42,609 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2119548731, now seen corresponding path program 140 times [2018-07-25 08:44:42,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 39480 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 19740 trivial. 0 not checked. [2018-07-25 08:44:43,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,287 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:44:43,287 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:44:43,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:44:43,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:44:43,289 INFO L87 Difference]: Start difference. First operand 567 states and 568 transitions. Second operand 143 states. [2018-07-25 08:44:46,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,645 INFO L93 Difference]: Finished difference Result 855 states and 858 transitions. [2018-07-25 08:44:46,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:44:46,645 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 566 [2018-07-25 08:44:46,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,646 INFO L225 Difference]: With dead ends: 855 [2018-07-25 08:44:46,646 INFO L226 Difference]: Without dead ends: 571 [2018-07-25 08:44:46,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:44:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2018-07-25 08:44:46,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2018-07-25 08:44:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2018-07-25 08:44:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 572 transitions. [2018-07-25 08:44:46,652 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 572 transitions. Word has length 566 [2018-07-25 08:44:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,652 INFO L472 AbstractCegarLoop]: Abstraction has 571 states and 572 transitions. [2018-07-25 08:44:46,652 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:44:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 572 transitions. [2018-07-25 08:44:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2018-07-25 08:44:46,654 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,654 INFO L354 BasicCegarLoop]: trace histogram [142, 142, 141, 141, 1, 1, 1, 1] [2018-07-25 08:44:46,655 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1942590895, now seen corresponding path program 141 times [2018-07-25 08:44:46,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 40044 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 20022 trivial. 0 not checked. [2018-07-25 08:44:47,395 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,395 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:44:47,395 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:44:47,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:44:47,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:44:47,397 INFO L87 Difference]: Start difference. First operand 571 states and 572 transitions. Second operand 144 states. [2018-07-25 08:44:51,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:51,751 INFO L93 Difference]: Finished difference Result 861 states and 864 transitions. [2018-07-25 08:44:51,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:44:51,751 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 570 [2018-07-25 08:44:51,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:51,752 INFO L225 Difference]: With dead ends: 861 [2018-07-25 08:44:51,752 INFO L226 Difference]: Without dead ends: 575 [2018-07-25 08:44:51,753 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:44:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2018-07-25 08:44:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2018-07-25 08:44:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2018-07-25 08:44:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 576 transitions. [2018-07-25 08:44:51,758 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 576 transitions. Word has length 570 [2018-07-25 08:44:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:51,758 INFO L472 AbstractCegarLoop]: Abstraction has 575 states and 576 transitions. [2018-07-25 08:44:51,758 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:44:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 576 transitions. [2018-07-25 08:44:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2018-07-25 08:44:51,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:51,760 INFO L354 BasicCegarLoop]: trace histogram [143, 143, 142, 142, 1, 1, 1, 1] [2018-07-25 08:44:51,760 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:51,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1762177571, now seen corresponding path program 142 times [2018-07-25 08:44:51,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 40612 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 20306 trivial. 0 not checked. [2018-07-25 08:44:52,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:52,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:44:52,448 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:44:52,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:44:52,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:44:52,450 INFO L87 Difference]: Start difference. First operand 575 states and 576 transitions. Second operand 145 states. [2018-07-25 08:44:54,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:54,558 INFO L93 Difference]: Finished difference Result 867 states and 870 transitions. [2018-07-25 08:44:54,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:44:54,558 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 574 [2018-07-25 08:44:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:54,559 INFO L225 Difference]: With dead ends: 867 [2018-07-25 08:44:54,559 INFO L226 Difference]: Without dead ends: 579 [2018-07-25 08:44:54,560 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:44:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2018-07-25 08:44:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2018-07-25 08:44:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2018-07-25 08:44:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 580 transitions. [2018-07-25 08:44:54,566 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 580 transitions. Word has length 574 [2018-07-25 08:44:54,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:54,567 INFO L472 AbstractCegarLoop]: Abstraction has 579 states and 580 transitions. [2018-07-25 08:44:54,567 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:44:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 580 transitions. [2018-07-25 08:44:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2018-07-25 08:44:54,569 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:54,569 INFO L354 BasicCegarLoop]: trace histogram [144, 144, 143, 143, 1, 1, 1, 1] [2018-07-25 08:44:54,569 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:54,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1734863721, now seen corresponding path program 143 times [2018-07-25 08:44:54,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 41184 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 20592 trivial. 0 not checked. [2018-07-25 08:44:55,350 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:55,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:44:55,351 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:44:55,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:44:55,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:44:55,353 INFO L87 Difference]: Start difference. First operand 579 states and 580 transitions. Second operand 146 states. [2018-07-25 08:44:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:57,626 INFO L93 Difference]: Finished difference Result 873 states and 876 transitions. [2018-07-25 08:44:57,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:44:57,626 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 578 [2018-07-25 08:44:57,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:57,627 INFO L225 Difference]: With dead ends: 873 [2018-07-25 08:44:57,627 INFO L226 Difference]: Without dead ends: 583 [2018-07-25 08:44:57,629 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:44:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2018-07-25 08:44:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2018-07-25 08:44:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2018-07-25 08:44:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 584 transitions. [2018-07-25 08:44:57,634 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 584 transitions. Word has length 578 [2018-07-25 08:44:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:57,634 INFO L472 AbstractCegarLoop]: Abstraction has 583 states and 584 transitions. [2018-07-25 08:44:57,634 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:44:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 584 transitions. [2018-07-25 08:44:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-07-25 08:44:57,637 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:57,637 INFO L354 BasicCegarLoop]: trace histogram [145, 145, 144, 144, 1, 1, 1, 1] [2018-07-25 08:44:57,637 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:57,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1820114187, now seen corresponding path program 144 times [2018-07-25 08:44:57,638 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 41760 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 20880 trivial. 0 not checked. [2018-07-25 08:44:58,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:58,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:44:58,322 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:44:58,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:44:58,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:44:58,324 INFO L87 Difference]: Start difference. First operand 583 states and 584 transitions. Second operand 147 states. [2018-07-25 08:45:01,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:01,230 INFO L93 Difference]: Finished difference Result 879 states and 882 transitions. [2018-07-25 08:45:01,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:45:01,231 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 582 [2018-07-25 08:45:01,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:01,231 INFO L225 Difference]: With dead ends: 879 [2018-07-25 08:45:01,231 INFO L226 Difference]: Without dead ends: 587 [2018-07-25 08:45:01,233 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:45:01,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2018-07-25 08:45:01,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2018-07-25 08:45:01,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2018-07-25 08:45:01,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 588 transitions. [2018-07-25 08:45:01,238 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 588 transitions. Word has length 582 [2018-07-25 08:45:01,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:01,238 INFO L472 AbstractCegarLoop]: Abstraction has 587 states and 588 transitions. [2018-07-25 08:45:01,238 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:45:01,238 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 588 transitions. [2018-07-25 08:45:01,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-07-25 08:45:01,240 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:01,240 INFO L354 BasicCegarLoop]: trace histogram [146, 146, 145, 145, 1, 1, 1, 1] [2018-07-25 08:45:01,240 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:01,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1044097919, now seen corresponding path program 145 times [2018-07-25 08:45:01,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 42340 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 21170 trivial. 0 not checked. [2018-07-25 08:45:02,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:02,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:45:02,011 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:45:02,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:45:02,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:45:02,013 INFO L87 Difference]: Start difference. First operand 587 states and 588 transitions. Second operand 148 states. [2018-07-25 08:45:04,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:04,545 INFO L93 Difference]: Finished difference Result 885 states and 888 transitions. [2018-07-25 08:45:04,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:45:04,545 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 586 [2018-07-25 08:45:04,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:04,546 INFO L225 Difference]: With dead ends: 885 [2018-07-25 08:45:04,546 INFO L226 Difference]: Without dead ends: 591 [2018-07-25 08:45:04,547 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:45:04,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-07-25 08:45:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2018-07-25 08:45:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2018-07-25 08:45:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 592 transitions. [2018-07-25 08:45:04,552 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 592 transitions. Word has length 586 [2018-07-25 08:45:04,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:04,552 INFO L472 AbstractCegarLoop]: Abstraction has 591 states and 592 transitions. [2018-07-25 08:45:04,552 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:45:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 592 transitions. [2018-07-25 08:45:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2018-07-25 08:45:04,554 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:04,555 INFO L354 BasicCegarLoop]: trace histogram [147, 147, 146, 146, 1, 1, 1, 1] [2018-07-25 08:45:04,555 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:04,555 INFO L82 PathProgramCache]: Analyzing trace with hash 383377395, now seen corresponding path program 146 times [2018-07-25 08:45:04,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 42924 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 21462 trivial. 0 not checked. [2018-07-25 08:45:05,347 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:05,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:45:05,347 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:45:05,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:45:05,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:45:05,350 INFO L87 Difference]: Start difference. First operand 591 states and 592 transitions. Second operand 149 states. [2018-07-25 08:45:08,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:08,541 INFO L93 Difference]: Finished difference Result 891 states and 894 transitions. [2018-07-25 08:45:08,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:45:08,541 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 590 [2018-07-25 08:45:08,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:08,542 INFO L225 Difference]: With dead ends: 891 [2018-07-25 08:45:08,542 INFO L226 Difference]: Without dead ends: 595 [2018-07-25 08:45:08,544 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:45:08,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2018-07-25 08:45:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2018-07-25 08:45:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2018-07-25 08:45:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 596 transitions. [2018-07-25 08:45:08,551 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 596 transitions. Word has length 590 [2018-07-25 08:45:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:08,551 INFO L472 AbstractCegarLoop]: Abstraction has 595 states and 596 transitions. [2018-07-25 08:45:08,551 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:45:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 596 transitions. [2018-07-25 08:45:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2018-07-25 08:45:08,554 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:08,554 INFO L354 BasicCegarLoop]: trace histogram [148, 148, 147, 147, 1, 1, 1, 1] [2018-07-25 08:45:08,554 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:08,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1859934823, now seen corresponding path program 147 times [2018-07-25 08:45:08,554 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 43512 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 21756 trivial. 0 not checked. [2018-07-25 08:45:09,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:09,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:45:09,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:45:09,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:45:09,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:45:09,453 INFO L87 Difference]: Start difference. First operand 595 states and 596 transitions. Second operand 150 states. [2018-07-25 08:45:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:13,028 INFO L93 Difference]: Finished difference Result 897 states and 900 transitions. [2018-07-25 08:45:13,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:45:13,028 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 594 [2018-07-25 08:45:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:13,029 INFO L225 Difference]: With dead ends: 897 [2018-07-25 08:45:13,029 INFO L226 Difference]: Without dead ends: 599 [2018-07-25 08:45:13,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:45:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2018-07-25 08:45:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2018-07-25 08:45:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2018-07-25 08:45:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 600 transitions. [2018-07-25 08:45:13,035 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 600 transitions. Word has length 594 [2018-07-25 08:45:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:13,035 INFO L472 AbstractCegarLoop]: Abstraction has 599 states and 600 transitions. [2018-07-25 08:45:13,035 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:45:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 600 transitions. [2018-07-25 08:45:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2018-07-25 08:45:13,038 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:13,038 INFO L354 BasicCegarLoop]: trace histogram [149, 149, 148, 148, 1, 1, 1, 1] [2018-07-25 08:45:13,038 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:13,038 INFO L82 PathProgramCache]: Analyzing trace with hash -297264421, now seen corresponding path program 148 times [2018-07-25 08:45:13,038 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 44104 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 22052 trivial. 0 not checked. [2018-07-25 08:45:13,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:45:13,834 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:45:13,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:45:13,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:45:13,836 INFO L87 Difference]: Start difference. First operand 599 states and 600 transitions. Second operand 151 states. [2018-07-25 08:45:18,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:18,557 INFO L93 Difference]: Finished difference Result 903 states and 906 transitions. [2018-07-25 08:45:18,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:45:18,557 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 598 [2018-07-25 08:45:18,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:18,558 INFO L225 Difference]: With dead ends: 903 [2018-07-25 08:45:18,558 INFO L226 Difference]: Without dead ends: 603 [2018-07-25 08:45:18,559 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:45:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2018-07-25 08:45:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2018-07-25 08:45:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2018-07-25 08:45:18,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 604 transitions. [2018-07-25 08:45:18,564 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 604 transitions. Word has length 598 [2018-07-25 08:45:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:18,564 INFO L472 AbstractCegarLoop]: Abstraction has 603 states and 604 transitions. [2018-07-25 08:45:18,564 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:45:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 604 transitions. [2018-07-25 08:45:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2018-07-25 08:45:18,567 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:18,567 INFO L354 BasicCegarLoop]: trace histogram [150, 150, 149, 149, 1, 1, 1, 1] [2018-07-25 08:45:18,567 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:18,567 INFO L82 PathProgramCache]: Analyzing trace with hash 748822863, now seen corresponding path program 149 times [2018-07-25 08:45:18,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 44700 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 22350 trivial. 0 not checked. [2018-07-25 08:45:19,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:19,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:45:19,322 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:45:19,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:45:19,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:45:19,326 INFO L87 Difference]: Start difference. First operand 603 states and 604 transitions. Second operand 152 states. [2018-07-25 08:45:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:23,044 INFO L93 Difference]: Finished difference Result 909 states and 912 transitions. [2018-07-25 08:45:23,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:45:23,044 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 602 [2018-07-25 08:45:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:23,045 INFO L225 Difference]: With dead ends: 909 [2018-07-25 08:45:23,045 INFO L226 Difference]: Without dead ends: 607 [2018-07-25 08:45:23,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:45:23,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2018-07-25 08:45:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2018-07-25 08:45:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2018-07-25 08:45:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 608 transitions. [2018-07-25 08:45:23,051 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 608 transitions. Word has length 602 [2018-07-25 08:45:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:23,051 INFO L472 AbstractCegarLoop]: Abstraction has 607 states and 608 transitions. [2018-07-25 08:45:23,051 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:45:23,051 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 608 transitions. [2018-07-25 08:45:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2018-07-25 08:45:23,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:23,054 INFO L354 BasicCegarLoop]: trace histogram [151, 151, 150, 150, 1, 1, 1, 1] [2018-07-25 08:45:23,054 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1894739395, now seen corresponding path program 150 times [2018-07-25 08:45:23,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 45300 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 22650 trivial. 0 not checked. [2018-07-25 08:45:23,940 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:23,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:45:23,941 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:45:23,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:45:23,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:45:23,942 INFO L87 Difference]: Start difference. First operand 607 states and 608 transitions. Second operand 153 states. [2018-07-25 08:45:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:28,398 INFO L93 Difference]: Finished difference Result 915 states and 918 transitions. [2018-07-25 08:45:28,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:45:28,398 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 606 [2018-07-25 08:45:28,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:28,399 INFO L225 Difference]: With dead ends: 915 [2018-07-25 08:45:28,399 INFO L226 Difference]: Without dead ends: 611 [2018-07-25 08:45:28,400 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:45:28,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2018-07-25 08:45:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2018-07-25 08:45:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2018-07-25 08:45:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 612 transitions. [2018-07-25 08:45:28,405 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 612 transitions. Word has length 606 [2018-07-25 08:45:28,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:28,405 INFO L472 AbstractCegarLoop]: Abstraction has 611 states and 612 transitions. [2018-07-25 08:45:28,405 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:45:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 612 transitions. [2018-07-25 08:45:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2018-07-25 08:45:28,407 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:28,407 INFO L354 BasicCegarLoop]: trace histogram [152, 152, 151, 151, 1, 1, 1, 1] [2018-07-25 08:45:28,407 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:28,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1907687479, now seen corresponding path program 151 times [2018-07-25 08:45:28,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 45904 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 22952 trivial. 0 not checked. [2018-07-25 08:45:29,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:29,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:45:29,155 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:45:29,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:45:29,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:45:29,157 INFO L87 Difference]: Start difference. First operand 611 states and 612 transitions. Second operand 154 states. [2018-07-25 08:45:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:33,444 INFO L93 Difference]: Finished difference Result 921 states and 924 transitions. [2018-07-25 08:45:33,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:45:33,444 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 610 [2018-07-25 08:45:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:33,444 INFO L225 Difference]: With dead ends: 921 [2018-07-25 08:45:33,445 INFO L226 Difference]: Without dead ends: 615 [2018-07-25 08:45:33,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:45:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2018-07-25 08:45:33,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2018-07-25 08:45:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2018-07-25 08:45:33,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 616 transitions. [2018-07-25 08:45:33,451 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 616 transitions. Word has length 610 [2018-07-25 08:45:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:33,451 INFO L472 AbstractCegarLoop]: Abstraction has 615 states and 616 transitions. [2018-07-25 08:45:33,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:45:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 616 transitions. [2018-07-25 08:45:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-07-25 08:45:33,454 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:33,454 INFO L354 BasicCegarLoop]: trace histogram [153, 153, 152, 152, 1, 1, 1, 1] [2018-07-25 08:45:33,454 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:33,454 INFO L82 PathProgramCache]: Analyzing trace with hash 351787179, now seen corresponding path program 152 times [2018-07-25 08:45:33,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 46512 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 23256 trivial. 0 not checked. [2018-07-25 08:45:34,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:34,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:45:34,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:45:34,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:45:34,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:45:34,268 INFO L87 Difference]: Start difference. First operand 615 states and 616 transitions. Second operand 155 states. [2018-07-25 08:45:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:39,929 INFO L93 Difference]: Finished difference Result 927 states and 930 transitions. [2018-07-25 08:45:39,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:45:39,929 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 614 [2018-07-25 08:45:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:39,930 INFO L225 Difference]: With dead ends: 927 [2018-07-25 08:45:39,930 INFO L226 Difference]: Without dead ends: 619 [2018-07-25 08:45:39,932 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:45:39,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2018-07-25 08:45:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2018-07-25 08:45:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2018-07-25 08:45:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 620 transitions. [2018-07-25 08:45:39,940 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 620 transitions. Word has length 614 [2018-07-25 08:45:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:39,940 INFO L472 AbstractCegarLoop]: Abstraction has 619 states and 620 transitions. [2018-07-25 08:45:39,940 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:45:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 620 transitions. [2018-07-25 08:45:39,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2018-07-25 08:45:39,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:39,944 INFO L354 BasicCegarLoop]: trace histogram [154, 154, 153, 153, 1, 1, 1, 1] [2018-07-25 08:45:39,944 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:39,944 INFO L82 PathProgramCache]: Analyzing trace with hash 809301791, now seen corresponding path program 153 times [2018-07-25 08:45:39,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 47124 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 23562 trivial. 0 not checked. [2018-07-25 08:45:40,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:40,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:45:40,802 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:45:40,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:45:40,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:45:40,803 INFO L87 Difference]: Start difference. First operand 619 states and 620 transitions. Second operand 156 states. [2018-07-25 08:45:43,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:43,390 INFO L93 Difference]: Finished difference Result 933 states and 936 transitions. [2018-07-25 08:45:43,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:45:43,390 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 618 [2018-07-25 08:45:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:43,391 INFO L225 Difference]: With dead ends: 933 [2018-07-25 08:45:43,391 INFO L226 Difference]: Without dead ends: 623 [2018-07-25 08:45:43,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:45:43,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2018-07-25 08:45:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2018-07-25 08:45:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2018-07-25 08:45:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 624 transitions. [2018-07-25 08:45:43,397 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 624 transitions. Word has length 618 [2018-07-25 08:45:43,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:43,397 INFO L472 AbstractCegarLoop]: Abstraction has 623 states and 624 transitions. [2018-07-25 08:45:43,397 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:45:43,397 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 624 transitions. [2018-07-25 08:45:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2018-07-25 08:45:43,400 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:43,400 INFO L354 BasicCegarLoop]: trace histogram [155, 155, 154, 154, 1, 1, 1, 1] [2018-07-25 08:45:43,400 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1216961427, now seen corresponding path program 154 times [2018-07-25 08:45:43,400 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 47740 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 23870 trivial. 0 not checked. [2018-07-25 08:45:44,247 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,247 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:45:44,248 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:45:44,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:45:44,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:45:44,250 INFO L87 Difference]: Start difference. First operand 623 states and 624 transitions. Second operand 157 states. [2018-07-25 08:45:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:48,195 INFO L93 Difference]: Finished difference Result 939 states and 942 transitions. [2018-07-25 08:45:48,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:45:48,195 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 622 [2018-07-25 08:45:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:48,196 INFO L225 Difference]: With dead ends: 939 [2018-07-25 08:45:48,196 INFO L226 Difference]: Without dead ends: 627 [2018-07-25 08:45:48,198 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:45:48,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2018-07-25 08:45:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2018-07-25 08:45:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2018-07-25 08:45:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 628 transitions. [2018-07-25 08:45:48,203 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 628 transitions. Word has length 622 [2018-07-25 08:45:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:48,203 INFO L472 AbstractCegarLoop]: Abstraction has 627 states and 628 transitions. [2018-07-25 08:45:48,203 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:45:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 628 transitions. [2018-07-25 08:45:48,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2018-07-25 08:45:48,206 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:48,206 INFO L354 BasicCegarLoop]: trace histogram [156, 156, 155, 155, 1, 1, 1, 1] [2018-07-25 08:45:48,206 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:48,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1382155783, now seen corresponding path program 155 times [2018-07-25 08:45:48,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 48360 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 24180 trivial. 0 not checked. [2018-07-25 08:45:49,110 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:49,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:45:49,111 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:45:49,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:45:49,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:45:49,114 INFO L87 Difference]: Start difference. First operand 627 states and 628 transitions. Second operand 158 states. [2018-07-25 08:45:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:54,543 INFO L93 Difference]: Finished difference Result 945 states and 948 transitions. [2018-07-25 08:45:54,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:45:54,543 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 626 [2018-07-25 08:45:54,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:54,544 INFO L225 Difference]: With dead ends: 945 [2018-07-25 08:45:54,544 INFO L226 Difference]: Without dead ends: 631 [2018-07-25 08:45:54,545 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:45:54,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2018-07-25 08:45:54,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2018-07-25 08:45:54,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2018-07-25 08:45:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 632 transitions. [2018-07-25 08:45:54,550 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 632 transitions. Word has length 626 [2018-07-25 08:45:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:54,551 INFO L472 AbstractCegarLoop]: Abstraction has 631 states and 632 transitions. [2018-07-25 08:45:54,551 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:45:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 632 transitions. [2018-07-25 08:45:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2018-07-25 08:45:54,554 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:54,554 INFO L354 BasicCegarLoop]: trace histogram [157, 157, 156, 156, 1, 1, 1, 1] [2018-07-25 08:45:54,554 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:54,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1909192315, now seen corresponding path program 156 times [2018-07-25 08:45:54,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 48984 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 24492 trivial. 0 not checked. [2018-07-25 08:45:55,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:55,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:45:55,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:45:55,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:45:55,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:45:55,417 INFO L87 Difference]: Start difference. First operand 631 states and 632 transitions. Second operand 159 states. [2018-07-25 08:46:00,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:00,171 INFO L93 Difference]: Finished difference Result 951 states and 954 transitions. [2018-07-25 08:46:00,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:46:00,171 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 630 [2018-07-25 08:46:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:00,172 INFO L225 Difference]: With dead ends: 951 [2018-07-25 08:46:00,172 INFO L226 Difference]: Without dead ends: 635 [2018-07-25 08:46:00,173 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:46:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2018-07-25 08:46:00,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2018-07-25 08:46:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2018-07-25 08:46:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 636 transitions. [2018-07-25 08:46:00,178 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 636 transitions. Word has length 630 [2018-07-25 08:46:00,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:00,179 INFO L472 AbstractCegarLoop]: Abstraction has 635 states and 636 transitions. [2018-07-25 08:46:00,179 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:46:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 636 transitions. [2018-07-25 08:46:00,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2018-07-25 08:46:00,181 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:00,181 INFO L354 BasicCegarLoop]: trace histogram [158, 158, 157, 157, 1, 1, 1, 1] [2018-07-25 08:46:00,181 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:00,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1169412881, now seen corresponding path program 157 times [2018-07-25 08:46:00,181 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 49612 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 24806 trivial. 0 not checked. [2018-07-25 08:46:01,003 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:01,003 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:46:01,003 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:46:01,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:46:01,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:46:01,006 INFO L87 Difference]: Start difference. First operand 635 states and 636 transitions. Second operand 160 states. [2018-07-25 08:46:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:06,555 INFO L93 Difference]: Finished difference Result 957 states and 960 transitions. [2018-07-25 08:46:06,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:46:06,555 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 634 [2018-07-25 08:46:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:06,556 INFO L225 Difference]: With dead ends: 957 [2018-07-25 08:46:06,556 INFO L226 Difference]: Without dead ends: 639 [2018-07-25 08:46:06,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:46:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2018-07-25 08:46:06,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2018-07-25 08:46:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2018-07-25 08:46:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 640 transitions. [2018-07-25 08:46:06,562 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 640 transitions. Word has length 634 [2018-07-25 08:46:06,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:06,562 INFO L472 AbstractCegarLoop]: Abstraction has 639 states and 640 transitions. [2018-07-25 08:46:06,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:46:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 640 transitions. [2018-07-25 08:46:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2018-07-25 08:46:06,564 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:06,564 INFO L354 BasicCegarLoop]: trace histogram [159, 159, 158, 158, 1, 1, 1, 1] [2018-07-25 08:46:06,565 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:06,565 INFO L82 PathProgramCache]: Analyzing trace with hash -286807709, now seen corresponding path program 158 times [2018-07-25 08:46:06,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 50244 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 25122 trivial. 0 not checked. [2018-07-25 08:46:07,402 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:07,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:46:07,402 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:46:07,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:46:07,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:46:07,405 INFO L87 Difference]: Start difference. First operand 639 states and 640 transitions. Second operand 161 states. [2018-07-25 08:46:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:12,668 INFO L93 Difference]: Finished difference Result 963 states and 966 transitions. [2018-07-25 08:46:12,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:46:12,668 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 638 [2018-07-25 08:46:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:12,669 INFO L225 Difference]: With dead ends: 963 [2018-07-25 08:46:12,669 INFO L226 Difference]: Without dead ends: 643 [2018-07-25 08:46:12,670 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:46:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2018-07-25 08:46:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2018-07-25 08:46:12,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2018-07-25 08:46:12,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 644 transitions. [2018-07-25 08:46:12,676 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 644 transitions. Word has length 638 [2018-07-25 08:46:12,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:12,677 INFO L472 AbstractCegarLoop]: Abstraction has 643 states and 644 transitions. [2018-07-25 08:46:12,677 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:46:12,677 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 644 transitions. [2018-07-25 08:46:12,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2018-07-25 08:46:12,679 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:12,679 INFO L354 BasicCegarLoop]: trace histogram [160, 160, 159, 159, 1, 1, 1, 1] [2018-07-25 08:46:12,680 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:12,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1109617623, now seen corresponding path program 159 times [2018-07-25 08:46:12,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 50880 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 25440 trivial. 0 not checked. [2018-07-25 08:46:13,617 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:13,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:46:13,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:46:13,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:46:13,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:46:13,620 INFO L87 Difference]: Start difference. First operand 643 states and 644 transitions. Second operand 162 states. [2018-07-25 08:46:17,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:17,225 INFO L93 Difference]: Finished difference Result 969 states and 972 transitions. [2018-07-25 08:46:17,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:46:17,225 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 642 [2018-07-25 08:46:17,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:17,226 INFO L225 Difference]: With dead ends: 969 [2018-07-25 08:46:17,226 INFO L226 Difference]: Without dead ends: 647 [2018-07-25 08:46:17,227 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:46:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2018-07-25 08:46:17,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2018-07-25 08:46:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2018-07-25 08:46:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 648 transitions. [2018-07-25 08:46:17,233 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 648 transitions. Word has length 642 [2018-07-25 08:46:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:17,233 INFO L472 AbstractCegarLoop]: Abstraction has 647 states and 648 transitions. [2018-07-25 08:46:17,233 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:46:17,233 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 648 transitions. [2018-07-25 08:46:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2018-07-25 08:46:17,235 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:17,235 INFO L354 BasicCegarLoop]: trace histogram [161, 161, 160, 160, 1, 1, 1, 1] [2018-07-25 08:46:17,236 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:17,236 INFO L82 PathProgramCache]: Analyzing trace with hash 369390667, now seen corresponding path program 160 times [2018-07-25 08:46:17,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 51520 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 25760 trivial. 0 not checked. [2018-07-25 08:46:18,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:18,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:46:18,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:46:18,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:46:18,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:46:18,200 INFO L87 Difference]: Start difference. First operand 647 states and 648 transitions. Second operand 163 states. [2018-07-25 08:46:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:22,182 INFO L93 Difference]: Finished difference Result 975 states and 978 transitions. [2018-07-25 08:46:22,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:46:22,182 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 646 [2018-07-25 08:46:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:22,183 INFO L225 Difference]: With dead ends: 975 [2018-07-25 08:46:22,183 INFO L226 Difference]: Without dead ends: 651 [2018-07-25 08:46:22,184 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:46:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2018-07-25 08:46:22,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2018-07-25 08:46:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2018-07-25 08:46:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 652 transitions. [2018-07-25 08:46:22,190 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 652 transitions. Word has length 646 [2018-07-25 08:46:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:22,190 INFO L472 AbstractCegarLoop]: Abstraction has 651 states and 652 transitions. [2018-07-25 08:46:22,190 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:46:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 652 transitions. [2018-07-25 08:46:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2018-07-25 08:46:22,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:22,193 INFO L354 BasicCegarLoop]: trace histogram [162, 162, 161, 161, 1, 1, 1, 1] [2018-07-25 08:46:22,193 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:22,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1139817793, now seen corresponding path program 161 times [2018-07-25 08:46:22,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 52164 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 26082 trivial. 0 not checked. [2018-07-25 08:46:23,136 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:23,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:46:23,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:46:23,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:46:23,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:46:23,139 INFO L87 Difference]: Start difference. First operand 651 states and 652 transitions. Second operand 164 states. [2018-07-25 08:46:29,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:29,936 INFO L93 Difference]: Finished difference Result 981 states and 984 transitions. [2018-07-25 08:46:29,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:46:29,937 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 650 [2018-07-25 08:46:29,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:29,938 INFO L225 Difference]: With dead ends: 981 [2018-07-25 08:46:29,938 INFO L226 Difference]: Without dead ends: 655 [2018-07-25 08:46:29,939 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:46:29,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2018-07-25 08:46:29,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2018-07-25 08:46:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2018-07-25 08:46:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 656 transitions. [2018-07-25 08:46:29,945 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 656 transitions. Word has length 650 [2018-07-25 08:46:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:29,946 INFO L472 AbstractCegarLoop]: Abstraction has 655 states and 656 transitions. [2018-07-25 08:46:29,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:46:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 656 transitions. [2018-07-25 08:46:29,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2018-07-25 08:46:29,948 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:29,948 INFO L354 BasicCegarLoop]: trace histogram [163, 163, 162, 162, 1, 1, 1, 1] [2018-07-25 08:46:29,948 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:29,949 INFO L82 PathProgramCache]: Analyzing trace with hash 894064435, now seen corresponding path program 162 times [2018-07-25 08:46:29,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 52812 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 26406 trivial. 0 not checked. [2018-07-25 08:46:30,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:30,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:46:30,984 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:46:30,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:46:30,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:46:30,987 INFO L87 Difference]: Start difference. First operand 655 states and 656 transitions. Second operand 165 states. [2018-07-25 08:46:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:34,816 INFO L93 Difference]: Finished difference Result 987 states and 990 transitions. [2018-07-25 08:46:34,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:46:34,817 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 654 [2018-07-25 08:46:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:34,817 INFO L225 Difference]: With dead ends: 987 [2018-07-25 08:46:34,817 INFO L226 Difference]: Without dead ends: 659 [2018-07-25 08:46:34,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:46:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2018-07-25 08:46:34,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2018-07-25 08:46:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2018-07-25 08:46:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 660 transitions. [2018-07-25 08:46:34,824 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 660 transitions. Word has length 654 [2018-07-25 08:46:34,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:34,825 INFO L472 AbstractCegarLoop]: Abstraction has 659 states and 660 transitions. [2018-07-25 08:46:34,825 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:46:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 660 transitions. [2018-07-25 08:46:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2018-07-25 08:46:34,828 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:34,828 INFO L354 BasicCegarLoop]: trace histogram [164, 164, 163, 163, 1, 1, 1, 1] [2018-07-25 08:46:34,828 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:34,828 INFO L82 PathProgramCache]: Analyzing trace with hash -231132761, now seen corresponding path program 163 times [2018-07-25 08:46:34,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 53464 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 26732 trivial. 0 not checked. [2018-07-25 08:46:35,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:35,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:46:35,861 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:46:35,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:46:35,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:46:35,863 INFO L87 Difference]: Start difference. First operand 659 states and 660 transitions. Second operand 166 states. [2018-07-25 08:46:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:42,605 INFO L93 Difference]: Finished difference Result 993 states and 996 transitions. [2018-07-25 08:46:42,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:46:42,605 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 658 [2018-07-25 08:46:42,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:42,606 INFO L225 Difference]: With dead ends: 993 [2018-07-25 08:46:42,606 INFO L226 Difference]: Without dead ends: 663 [2018-07-25 08:46:42,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:46:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2018-07-25 08:46:42,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2018-07-25 08:46:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2018-07-25 08:46:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 664 transitions. [2018-07-25 08:46:42,613 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 664 transitions. Word has length 658 [2018-07-25 08:46:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:42,613 INFO L472 AbstractCegarLoop]: Abstraction has 663 states and 664 transitions. [2018-07-25 08:46:42,613 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:46:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 664 transitions. [2018-07-25 08:46:42,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2018-07-25 08:46:42,616 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:42,616 INFO L354 BasicCegarLoop]: trace histogram [165, 165, 164, 164, 1, 1, 1, 1] [2018-07-25 08:46:42,617 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:42,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1830727141, now seen corresponding path program 164 times [2018-07-25 08:46:42,617 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 54120 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 27060 trivial. 0 not checked. [2018-07-25 08:46:43,600 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:43,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:46:43,600 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:46:43,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:46:43,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:46:43,603 INFO L87 Difference]: Start difference. First operand 663 states and 664 transitions. Second operand 167 states. [2018-07-25 08:46:47,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:47,351 INFO L93 Difference]: Finished difference Result 999 states and 1002 transitions. [2018-07-25 08:46:47,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:46:47,351 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 662 [2018-07-25 08:46:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:47,352 INFO L225 Difference]: With dead ends: 999 [2018-07-25 08:46:47,352 INFO L226 Difference]: Without dead ends: 667 [2018-07-25 08:46:47,353 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:46:47,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2018-07-25 08:46:47,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2018-07-25 08:46:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2018-07-25 08:46:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 668 transitions. [2018-07-25 08:46:47,362 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 668 transitions. Word has length 662 [2018-07-25 08:46:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:47,363 INFO L472 AbstractCegarLoop]: Abstraction has 667 states and 668 transitions. [2018-07-25 08:46:47,363 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:46:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 668 transitions. [2018-07-25 08:46:47,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2018-07-25 08:46:47,367 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:47,368 INFO L354 BasicCegarLoop]: trace histogram [166, 166, 165, 165, 1, 1, 1, 1] [2018-07-25 08:46:47,368 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:47,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1496860529, now seen corresponding path program 165 times [2018-07-25 08:46:47,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 54780 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 27390 trivial. 0 not checked. [2018-07-25 08:46:48,372 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:48,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:46:48,373 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:46:48,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:46:48,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:46:48,376 INFO L87 Difference]: Start difference. First operand 667 states and 668 transitions. Second operand 168 states. Received shutdown request... [2018-07-25 08:46:51,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:46:51,134 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:46:51,140 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:46:51,141 INFO L202 PluginConnector]: Adding new model array4.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:46:51 BoogieIcfgContainer [2018-07-25 08:46:51,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:46:51,142 INFO L168 Benchmark]: Toolchain (without parser) took 260648.28 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 235.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-25 08:46:51,144 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:46:51,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.42 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 08:46:51,145 INFO L168 Benchmark]: Boogie Preprocessor took 26.69 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:46:51,145 INFO L168 Benchmark]: RCFGBuilder took 283.66 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 08:46:51,146 INFO L168 Benchmark]: TraceAbstraction took 260284.65 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 224.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-25 08:46:51,148 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 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.42 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 26.69 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 283.66 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 260284.65 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 224.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 57). Cancelled while BasicCegarLoop was constructing difference of abstraction (667states) and interpolant automaton (currently 168 states, 168 states before enhancement), while ReachableStatesComputation was computing reachable states (682 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 260.2s OverallTime, 166 OverallIterations, 166 TraceHistogramMax, 193.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 994 SDtfs, 32126 SDslu, 33018 SDs, 0 SdLazy, 33351 SolverSat, 32687 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14027 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13861 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=667occurred in iteration=165, 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: 1.1s AutomataMinimizationTime, 165 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 45.5s InterpolantComputationTime, 55776 NumberOfCodeBlocks, 55776 NumberOfCodeBlocksAsserted, 166 NumberOfCheckSat, 55610 ConstructedInterpolants, 0 QuantifiedInterpolants, 49400770 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 166 InterpolantComputations, 1 PerfectInterpolantSequences, 1524710/3049420 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/array4.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-46-51-169.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array4.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-46-51-169.csv Completed graceful shutdown