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/nested1.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:47:38,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:47:38,360 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:47:38,374 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:47:38,374 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:47:38,375 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:47:38,379 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:47:38,382 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:47:38,386 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:47:38,387 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:47:38,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:47:38,390 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:47:38,391 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:47:38,392 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:47:38,394 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:47:38,395 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:47:38,401 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:47:38,403 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:47:38,410 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:47:38,415 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:47:38,416 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:47:38,420 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:47:38,425 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:47:38,425 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:47:38,425 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:47:38,426 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:47:38,427 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:47:38,431 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:47:38,432 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:47:38,433 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:47:38,434 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:47:38,434 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:47:38,437 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:47:38,464 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:47:38,464 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:47:38,465 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:47:38,466 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:47:38,466 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:47:38,466 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:47:38,466 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:47:38,466 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:47:38,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:47:38,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:47:38,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:47:38,531 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:47:38,532 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:47:38,533 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested1.i_4.bpl [2018-07-25 08:47:38,533 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested1.i_4.bpl' [2018-07-25 08:47:38,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:47:38,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:47:38,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:47:38,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:47:38,589 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:47:38,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/1) ... [2018-07-25 08:47:38,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/1) ... [2018-07-25 08:47:38,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:47:38,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:47:38,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:47:38,631 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:47:38,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/1) ... [2018-07-25 08:47:38,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/1) ... [2018-07-25 08:47:38,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/1) ... [2018-07-25 08:47:38,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/1) ... [2018-07-25 08:47:38,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/1) ... [2018-07-25 08:47:38,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/1) ... [2018-07-25 08:47:38,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/1) ... [2018-07-25 08:47:38,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:47:38,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:47:38,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:47:38,651 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:47:38,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/1) ... [2018-07-25 08:47:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:47:38,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:47:38,942 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:47:38,945 INFO L202 PluginConnector]: Adding new model nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:47:38 BoogieIcfgContainer [2018-07-25 08:47:38,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:47:38,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:47:38,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:47:38,951 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:47:38,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:38" (1/2) ... [2018-07-25 08:47:38,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2d7631 and model type nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:47:38, skipping insertion in model container [2018-07-25 08:47:38,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:47:38" (2/2) ... [2018-07-25 08:47:38,956 INFO L112 eAbstractionObserver]: Analyzing ICFG nested1.i_4.bpl [2018-07-25 08:47:38,968 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:47:38,978 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:47:39,033 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:47:39,034 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:47:39,034 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:47:39,035 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:47:39,035 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:47:39,035 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:47:39,035 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:47:39,035 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:47:39,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:47:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-07-25 08:47:39,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:47:39,060 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,062 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:47:39,063 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,068 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 08:47:39,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,156 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 08:47:39,158 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:47:39,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:47:39,164 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:47:39,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:47:39,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:47:39,179 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-07-25 08:47:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,217 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-07-25 08:47:39,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:47:39,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 08:47:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,231 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:47:39,231 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:47:39,235 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 08:47:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:47:39,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-07-25 08:47:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:47:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 08:47:39,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-07-25 08:47:39,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,275 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 08:47:39,276 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:47:39,276 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 08:47:39,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:47:39,277 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,277 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:47:39,277 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,278 INFO L82 PathProgramCache]: Analyzing trace with hash 209100445, now seen corresponding path program 1 times [2018-07-25 08:47:39,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:39,309 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:47:39,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:47:39,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:47:39,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:47:39,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:47:39,312 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2018-07-25 08:47:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,329 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-07-25 08:47:39,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:47:39,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-07-25 08:47:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,330 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:47:39,330 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:47:39,332 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 08:47:39,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:47:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:47:39,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:47:39,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 08:47:39,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 08:47:39,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,337 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 08:47:39,337 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:47:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 08:47:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:47:39,338 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,338 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:47:39,338 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,339 INFO L82 PathProgramCache]: Analyzing trace with hash -850198025, now seen corresponding path program 1 times [2018-07-25 08:47:39,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:39,389 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:47:39,391 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:47:39,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:47:39,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:47:39,392 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-07-25 08:47:39,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,434 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-07-25 08:47:39,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:47:39,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-07-25 08:47:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,436 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:47:39,436 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:47:39,436 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:47:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:47:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:47:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:47:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 08:47:39,444 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-25 08:47:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,444 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 08:47:39,444 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:47:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 08:47:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:47:39,447 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,447 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-07-25 08:47:39,447 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,448 INFO L82 PathProgramCache]: Analyzing trace with hash -928778543, now seen corresponding path program 2 times [2018-07-25 08:47:39,448 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-25 08:47:39,524 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,524 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:47:39,525 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:47:39,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:47:39,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:47:39,529 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 4 states. [2018-07-25 08:47:39,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,560 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-07-25 08:47:39,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:47:39,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-07-25 08:47:39,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,562 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:47:39,562 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:47:39,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:47:39,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:47:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2018-07-25 08:47:39,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:47:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-07-25 08:47:39,572 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2018-07-25 08:47:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,572 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-07-25 08:47:39,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:47:39,573 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-07-25 08:47:39,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:47:39,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,574 INFO L354 BasicCegarLoop]: trace histogram [6, 4, 3, 2, 2, 1, 1, 1] [2018-07-25 08:47:39,574 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1881088987, now seen corresponding path program 3 times [2018-07-25 08:47:39,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-25 08:47:39,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:47:39,625 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:47:39,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:47:39,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:47:39,626 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-07-25 08:47:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,663 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2018-07-25 08:47:39,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:47:39,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-07-25 08:47:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,668 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:47:39,668 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:47:39,669 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:47:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:47:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:47:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:47:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-07-25 08:47:39,689 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2018-07-25 08:47:39,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,693 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-07-25 08:47:39,693 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:47:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-07-25 08:47:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:47:39,694 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,694 INFO L354 BasicCegarLoop]: trace histogram [8, 6, 3, 2, 2, 1, 1, 1] [2018-07-25 08:47:39,695 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1778757007, now seen corresponding path program 4 times [2018-07-25 08:47:39,697 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-25 08:47:39,759 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,759 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:47:39,760 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:47:39,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:47:39,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:47:39,761 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2018-07-25 08:47:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,802 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-07-25 08:47:39,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:47:39,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-07-25 08:47:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,804 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:47:39,804 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:47:39,805 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:47:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:47:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2018-07-25 08:47:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:47:39,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-07-25 08:47:39,819 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2018-07-25 08:47:39,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,819 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-07-25 08:47:39,819 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:47:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-07-25 08:47:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:47:39,821 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,821 INFO L354 BasicCegarLoop]: trace histogram [12, 9, 4, 3, 3, 1, 1, 1] [2018-07-25 08:47:39,821 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,822 INFO L82 PathProgramCache]: Analyzing trace with hash 501354739, now seen corresponding path program 5 times [2018-07-25 08:47:39,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 70 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-25 08:47:39,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:47:39,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:47:39,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:47:39,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:47:39,899 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 6 states. [2018-07-25 08:47:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,972 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2018-07-25 08:47:39,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:47:39,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-07-25 08:47:39,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,974 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:47:39,974 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:47:39,975 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:47:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:47:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:47:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:47:39,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-07-25 08:47:39,987 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 34 [2018-07-25 08:47:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,988 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-07-25 08:47:39,988 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:47:39,988 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-07-25 08:47:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:47:39,989 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,990 INFO L354 BasicCegarLoop]: trace histogram [15, 12, 4, 3, 3, 1, 1, 1] [2018-07-25 08:47:39,990 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,990 INFO L82 PathProgramCache]: Analyzing trace with hash 209827969, now seen corresponding path program 6 times [2018-07-25 08:47:39,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-07-25 08:47:40,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:40,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:47:40,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:47:40,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:47:40,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:47:40,054 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 6 states. [2018-07-25 08:47:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:40,143 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2018-07-25 08:47:40,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:47:40,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-07-25 08:47:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:40,148 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:47:40,148 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:47:40,150 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:47:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:47:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2018-07-25 08:47:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:47:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2018-07-25 08:47:40,179 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 40 [2018-07-25 08:47:40,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:40,180 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2018-07-25 08:47:40,180 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:47:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2018-07-25 08:47:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:47:40,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:40,185 INFO L354 BasicCegarLoop]: trace histogram [20, 16, 5, 4, 4, 1, 1, 1] [2018-07-25 08:47:40,185 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:40,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1874565441, now seen corresponding path program 7 times [2018-07-25 08:47:40,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-07-25 08:47:40,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:40,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:47:40,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:47:40,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:47:40,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:47:40,311 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2018-07-25 08:47:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:40,407 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-07-25 08:47:40,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:47:40,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2018-07-25 08:47:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:40,414 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:47:40,414 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:47:40,417 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:47:40,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:47:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2018-07-25 08:47:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:47:40,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-07-25 08:47:40,443 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 52 [2018-07-25 08:47:40,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:40,445 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-07-25 08:47:40,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:47:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-07-25 08:47:40,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:47:40,449 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:40,449 INFO L354 BasicCegarLoop]: trace histogram [25, 20, 6, 5, 5, 1, 1, 1] [2018-07-25 08:47:40,450 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1395501053, now seen corresponding path program 8 times [2018-07-25 08:47:40,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 530 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-25 08:47:40,547 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:40,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:47:40,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:47:40,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:47:40,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:47:40,549 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 8 states. [2018-07-25 08:47:40,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:40,610 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2018-07-25 08:47:40,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:47:40,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2018-07-25 08:47:40,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:40,613 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:47:40,613 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:47:40,614 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:47:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:47:40,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2018-07-25 08:47:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:47:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-07-25 08:47:40,634 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 64 [2018-07-25 08:47:40,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:40,635 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-07-25 08:47:40,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:47:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-07-25 08:47:40,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:47:40,636 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:40,637 INFO L354 BasicCegarLoop]: trace histogram [30, 24, 7, 6, 6, 1, 1, 1] [2018-07-25 08:47:40,637 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:40,637 INFO L82 PathProgramCache]: Analyzing trace with hash 150535227, now seen corresponding path program 9 times [2018-07-25 08:47:40,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 792 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-25 08:47:40,728 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:40,728 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:47:40,729 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:47:40,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:47:40,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:47:40,730 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 9 states. [2018-07-25 08:47:40,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:40,807 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2018-07-25 08:47:40,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:47:40,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2018-07-25 08:47:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:40,810 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:47:40,810 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:47:40,813 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:47:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:47:40,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2018-07-25 08:47:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:47:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2018-07-25 08:47:40,842 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 76 [2018-07-25 08:47:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:40,842 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2018-07-25 08:47:40,842 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:47:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2018-07-25 08:47:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:47:40,844 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:40,844 INFO L354 BasicCegarLoop]: trace histogram [35, 28, 8, 7, 7, 1, 1, 1] [2018-07-25 08:47:40,846 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash 673309561, now seen corresponding path program 10 times [2018-07-25 08:47:40,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-07-25 08:47:40,974 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:40,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:47:40,975 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:47:40,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:47:40,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:47:40,976 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 10 states. [2018-07-25 08:47:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:41,085 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2018-07-25 08:47:41,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:47:41,085 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2018-07-25 08:47:41,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:41,088 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:47:41,088 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:47:41,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:47:41,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:47:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2018-07-25 08:47:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:47:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2018-07-25 08:47:41,127 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 88 [2018-07-25 08:47:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:41,130 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2018-07-25 08:47:41,130 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:47:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2018-07-25 08:47:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:47:41,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:41,132 INFO L354 BasicCegarLoop]: trace histogram [40, 32, 9, 8, 8, 1, 1, 1] [2018-07-25 08:47:41,132 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:41,138 INFO L82 PathProgramCache]: Analyzing trace with hash -907813449, now seen corresponding path program 11 times [2018-07-25 08:47:41,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-07-25 08:47:41,297 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:41,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:47:41,298 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:47:41,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:47:41,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:47:41,299 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 11 states. [2018-07-25 08:47:41,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:41,411 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2018-07-25 08:47:41,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:47:41,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2018-07-25 08:47:41,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:41,414 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:47:41,414 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:47:41,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:47:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:47:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 113. [2018-07-25 08:47:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:47:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2018-07-25 08:47:41,456 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 100 [2018-07-25 08:47:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:41,457 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2018-07-25 08:47:41,457 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:47:41,457 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2018-07-25 08:47:41,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:47:41,459 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:41,459 INFO L354 BasicCegarLoop]: trace histogram [45, 36, 10, 9, 9, 1, 1, 1] [2018-07-25 08:47:41,459 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:41,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1975883019, now seen corresponding path program 12 times [2018-07-25 08:47:41,460 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 1890 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-07-25 08:47:41,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:41,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:47:41,620 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:47:41,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:47:41,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:47:41,621 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 12 states. [2018-07-25 08:47:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:41,733 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2018-07-25 08:47:41,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:47:41,734 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2018-07-25 08:47:41,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:41,735 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:47:41,735 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:47:41,736 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:47:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:47:41,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-07-25 08:47:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:47:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2018-07-25 08:47:41,774 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 112 [2018-07-25 08:47:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:41,775 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2018-07-25 08:47:41,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:47:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2018-07-25 08:47:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:47:41,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:41,776 INFO L354 BasicCegarLoop]: trace histogram [50, 40, 11, 10, 10, 1, 1, 1] [2018-07-25 08:47:41,777 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:41,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1742801715, now seen corresponding path program 13 times [2018-07-25 08:47:41,777 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2560 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-07-25 08:47:41,932 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:41,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:47:41,932 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:47:41,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:47:41,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:47:41,933 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand 13 states. [2018-07-25 08:47:42,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:42,047 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2018-07-25 08:47:42,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:47:42,048 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2018-07-25 08:47:42,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:42,049 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:47:42,049 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:47:42,051 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:47:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:47:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2018-07-25 08:47:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:47:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2018-07-25 08:47:42,092 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 124 [2018-07-25 08:47:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:42,093 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2018-07-25 08:47:42,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:47:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2018-07-25 08:47:42,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:47:42,094 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:42,094 INFO L354 BasicCegarLoop]: trace histogram [55, 44, 12, 11, 11, 1, 1, 1] [2018-07-25 08:47:42,095 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:42,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1538048399, now seen corresponding path program 14 times [2018-07-25 08:47:42,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3102 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-07-25 08:47:42,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:42,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:47:42,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:47:42,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:47:42,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:47:42,281 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand 14 states. [2018-07-25 08:47:42,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:42,415 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2018-07-25 08:47:42,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:47:42,416 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 136 [2018-07-25 08:47:42,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:42,417 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:47:42,417 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:47:42,418 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:47:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:47:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2018-07-25 08:47:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:47:42,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 161 transitions. [2018-07-25 08:47:42,499 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 161 transitions. Word has length 136 [2018-07-25 08:47:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:42,499 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 161 transitions. [2018-07-25 08:47:42,499 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:47:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 161 transitions. [2018-07-25 08:47:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:47:42,501 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:42,501 INFO L354 BasicCegarLoop]: trace histogram [60, 48, 13, 12, 12, 1, 1, 1] [2018-07-25 08:47:42,502 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:42,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1546877777, now seen corresponding path program 15 times [2018-07-25 08:47:42,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3696 backedges. 0 proven. 3456 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-07-25 08:47:42,663 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:42,663 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:47:42,663 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:47:42,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:47:42,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:47:42,664 INFO L87 Difference]: Start difference. First operand 149 states and 161 transitions. Second operand 15 states. [2018-07-25 08:47:42,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:42,805 INFO L93 Difference]: Finished difference Result 173 states and 187 transitions. [2018-07-25 08:47:42,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:47:42,805 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2018-07-25 08:47:42,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:42,807 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:47:42,807 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:47:42,808 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:47:42,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:47:42,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2018-07-25 08:47:42,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:47:42,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 174 transitions. [2018-07-25 08:47:42,860 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 174 transitions. Word has length 148 [2018-07-25 08:47:42,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:42,861 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 174 transitions. [2018-07-25 08:47:42,861 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:47:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 174 transitions. [2018-07-25 08:47:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:47:42,862 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:42,863 INFO L354 BasicCegarLoop]: trace histogram [65, 52, 14, 13, 13, 1, 1, 1] [2018-07-25 08:47:42,863 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:42,864 INFO L82 PathProgramCache]: Analyzing trace with hash -850895379, now seen corresponding path program 16 times [2018-07-25 08:47:42,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4342 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-07-25 08:47:43,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:43,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:47:43,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:47:43,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:47:43,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:47:43,041 INFO L87 Difference]: Start difference. First operand 161 states and 174 transitions. Second operand 16 states. [2018-07-25 08:47:43,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:43,214 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2018-07-25 08:47:43,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:47:43,215 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2018-07-25 08:47:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:43,216 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:47:43,216 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:47:43,218 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:47:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:47:43,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-07-25 08:47:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:47:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2018-07-25 08:47:43,275 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 160 [2018-07-25 08:47:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:43,276 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2018-07-25 08:47:43,276 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:47:43,276 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2018-07-25 08:47:43,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:47:43,278 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:43,278 INFO L354 BasicCegarLoop]: trace histogram [70, 56, 15, 14, 14, 1, 1, 1] [2018-07-25 08:47:43,278 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:43,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1786923563, now seen corresponding path program 17 times [2018-07-25 08:47:43,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 4760 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-07-25 08:47:43,472 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:43,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:47:43,475 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:47:43,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:47:43,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:47:43,476 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand 17 states. [2018-07-25 08:47:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:43,654 INFO L93 Difference]: Finished difference Result 197 states and 213 transitions. [2018-07-25 08:47:43,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:47:43,655 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 172 [2018-07-25 08:47:43,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:43,656 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:47:43,656 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:47:43,657 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:47:43,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:47:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 185. [2018-07-25 08:47:43,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:47:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 200 transitions. [2018-07-25 08:47:43,723 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 200 transitions. Word has length 172 [2018-07-25 08:47:43,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:43,724 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 200 transitions. [2018-07-25 08:47:43,724 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:47:43,724 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 200 transitions. [2018-07-25 08:47:43,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:47:43,726 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:43,726 INFO L354 BasicCegarLoop]: trace histogram [75, 60, 16, 15, 15, 1, 1, 1] [2018-07-25 08:47:43,727 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:43,727 INFO L82 PathProgramCache]: Analyzing trace with hash -2013935255, now seen corresponding path program 18 times [2018-07-25 08:47:43,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 0 proven. 5490 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-07-25 08:47:43,952 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:43,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:47:43,952 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:47:43,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:47:43,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:47:43,953 INFO L87 Difference]: Start difference. First operand 185 states and 200 transitions. Second operand 18 states. [2018-07-25 08:47:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:44,150 INFO L93 Difference]: Finished difference Result 209 states and 226 transitions. [2018-07-25 08:47:44,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:47:44,151 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 184 [2018-07-25 08:47:44,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:44,152 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:47:44,153 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:47:44,153 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:47:44,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:47:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 197. [2018-07-25 08:47:44,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:47:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 213 transitions. [2018-07-25 08:47:44,219 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 213 transitions. Word has length 184 [2018-07-25 08:47:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:44,219 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 213 transitions. [2018-07-25 08:47:44,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:47:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 213 transitions. [2018-07-25 08:47:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:47:44,221 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:44,221 INFO L354 BasicCegarLoop]: trace histogram [80, 64, 17, 16, 16, 1, 1, 1] [2018-07-25 08:47:44,222 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:44,222 INFO L82 PathProgramCache]: Analyzing trace with hash -723625049, now seen corresponding path program 19 times [2018-07-25 08:47:44,222 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6592 backedges. 0 proven. 6272 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-07-25 08:47:44,471 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:44,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:47:44,472 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:47:44,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:47:44,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:47:44,473 INFO L87 Difference]: Start difference. First operand 197 states and 213 transitions. Second operand 19 states. [2018-07-25 08:47:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:44,737 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2018-07-25 08:47:44,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:47:44,737 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 196 [2018-07-25 08:47:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:44,739 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:47:44,739 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:47:44,739 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:47:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:47:44,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 209. [2018-07-25 08:47:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:47:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 226 transitions. [2018-07-25 08:47:44,812 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 226 transitions. Word has length 196 [2018-07-25 08:47:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:44,813 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 226 transitions. [2018-07-25 08:47:44,813 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:47:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 226 transitions. [2018-07-25 08:47:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:47:44,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:44,816 INFO L354 BasicCegarLoop]: trace histogram [85, 68, 18, 17, 17, 1, 1, 1] [2018-07-25 08:47:44,816 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:44,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2093514523, now seen corresponding path program 20 times [2018-07-25 08:47:44,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7446 backedges. 0 proven. 7106 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-07-25 08:47:45,075 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:45,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:47:45,075 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:47:45,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:47:45,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:47:45,076 INFO L87 Difference]: Start difference. First operand 209 states and 226 transitions. Second operand 20 states. [2018-07-25 08:47:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:45,313 INFO L93 Difference]: Finished difference Result 233 states and 252 transitions. [2018-07-25 08:47:45,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:47:45,314 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-07-25 08:47:45,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:45,315 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:47:45,316 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:47:45,316 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:47:45,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:47:45,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 221. [2018-07-25 08:47:45,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:47:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 239 transitions. [2018-07-25 08:47:45,397 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 239 transitions. Word has length 208 [2018-07-25 08:47:45,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:45,397 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 239 transitions. [2018-07-25 08:47:45,398 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:47:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 239 transitions. [2018-07-25 08:47:45,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:47:45,400 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:45,400 INFO L354 BasicCegarLoop]: trace histogram [90, 72, 19, 18, 18, 1, 1, 1] [2018-07-25 08:47:45,401 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:45,401 INFO L82 PathProgramCache]: Analyzing trace with hash 666679587, now seen corresponding path program 21 times [2018-07-25 08:47:45,401 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8352 backedges. 0 proven. 7992 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2018-07-25 08:47:45,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:45,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:47:45,673 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:47:45,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:47:45,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:47:45,674 INFO L87 Difference]: Start difference. First operand 221 states and 239 transitions. Second operand 21 states. [2018-07-25 08:47:45,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:45,924 INFO L93 Difference]: Finished difference Result 245 states and 265 transitions. [2018-07-25 08:47:45,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:47:45,924 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 220 [2018-07-25 08:47:45,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:45,926 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:47:45,926 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:47:45,927 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:47:45,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:47:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 233. [2018-07-25 08:47:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:47:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 252 transitions. [2018-07-25 08:47:46,013 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 252 transitions. Word has length 220 [2018-07-25 08:47:46,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:46,014 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 252 transitions. [2018-07-25 08:47:46,014 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:47:46,014 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 252 transitions. [2018-07-25 08:47:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:47:46,017 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:46,017 INFO L354 BasicCegarLoop]: trace histogram [95, 76, 20, 19, 19, 1, 1, 1] [2018-07-25 08:47:46,017 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:46,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1712749471, now seen corresponding path program 22 times [2018-07-25 08:47:46,018 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9310 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-07-25 08:47:46,294 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:46,294 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:47:46,295 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:47:46,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:47:46,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:47:46,295 INFO L87 Difference]: Start difference. First operand 233 states and 252 transitions. Second operand 22 states. [2018-07-25 08:47:46,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:46,549 INFO L93 Difference]: Finished difference Result 257 states and 278 transitions. [2018-07-25 08:47:46,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:47:46,549 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 232 [2018-07-25 08:47:46,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:46,551 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:47:46,551 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:47:46,552 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:47:46,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:47:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2018-07-25 08:47:46,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:47:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 265 transitions. [2018-07-25 08:47:46,646 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 265 transitions. Word has length 232 [2018-07-25 08:47:46,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:46,646 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 265 transitions. [2018-07-25 08:47:46,646 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:47:46,646 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 265 transitions. [2018-07-25 08:47:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:47:46,649 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:46,649 INFO L354 BasicCegarLoop]: trace histogram [100, 80, 21, 20, 20, 1, 1, 1] [2018-07-25 08:47:46,650 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:46,650 INFO L82 PathProgramCache]: Analyzing trace with hash -738631009, now seen corresponding path program 23 times [2018-07-25 08:47:46,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 9920 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-07-25 08:47:47,025 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:47,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:47:47,026 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:47:47,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:47:47,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:47:47,027 INFO L87 Difference]: Start difference. First operand 245 states and 265 transitions. Second operand 23 states. [2018-07-25 08:47:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:47,355 INFO L93 Difference]: Finished difference Result 269 states and 291 transitions. [2018-07-25 08:47:47,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:47:47,355 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 244 [2018-07-25 08:47:47,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:47,357 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:47:47,357 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:47:47,358 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:47:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:47:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 257. [2018-07-25 08:47:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:47:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 278 transitions. [2018-07-25 08:47:47,451 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 278 transitions. Word has length 244 [2018-07-25 08:47:47,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:47,451 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 278 transitions. [2018-07-25 08:47:47,452 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:47:47,452 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 278 transitions. [2018-07-25 08:47:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:47:47,455 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:47,456 INFO L354 BasicCegarLoop]: trace histogram [105, 84, 22, 21, 21, 1, 1, 1] [2018-07-25 08:47:47,456 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:47,456 INFO L82 PathProgramCache]: Analyzing trace with hash -756558883, now seen corresponding path program 24 times [2018-07-25 08:47:47,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11382 backedges. 0 proven. 10962 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-07-25 08:47:47,785 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:47,785 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:47:47,786 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:47:47,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:47:47,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:47:47,787 INFO L87 Difference]: Start difference. First operand 257 states and 278 transitions. Second operand 24 states. [2018-07-25 08:47:48,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:48,078 INFO L93 Difference]: Finished difference Result 281 states and 304 transitions. [2018-07-25 08:47:48,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:47:48,078 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 256 [2018-07-25 08:47:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:48,080 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:47:48,081 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:47:48,081 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:47:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:47:48,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 269. [2018-07-25 08:47:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:47:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2018-07-25 08:47:48,182 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 256 [2018-07-25 08:47:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:48,183 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2018-07-25 08:47:48,183 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:47:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2018-07-25 08:47:48,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:47:48,186 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:48,186 INFO L354 BasicCegarLoop]: trace histogram [110, 88, 23, 22, 22, 1, 1, 1] [2018-07-25 08:47:48,186 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:48,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1987074075, now seen corresponding path program 25 times [2018-07-25 08:47:48,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 0 proven. 12056 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-07-25 08:47:48,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:48,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:47:48,524 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:47:48,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:47:48,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:47:48,525 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand 25 states. [2018-07-25 08:47:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:48,840 INFO L93 Difference]: Finished difference Result 293 states and 317 transitions. [2018-07-25 08:47:48,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:47:48,840 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 268 [2018-07-25 08:47:48,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:48,842 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:47:48,843 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:47:48,843 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:47:48,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:47:48,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 281. [2018-07-25 08:47:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:47:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 304 transitions. [2018-07-25 08:47:48,960 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 304 transitions. Word has length 268 [2018-07-25 08:47:48,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:48,961 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 304 transitions. [2018-07-25 08:47:48,961 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:47:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 304 transitions. [2018-07-25 08:47:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:47:48,965 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:48,965 INFO L354 BasicCegarLoop]: trace histogram [115, 92, 24, 23, 23, 1, 1, 1] [2018-07-25 08:47:48,965 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:48,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1628335961, now seen corresponding path program 26 times [2018-07-25 08:47:48,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 13662 backedges. 0 proven. 13202 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2018-07-25 08:47:49,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:49,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:47:49,345 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:47:49,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:47:49,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:47:49,346 INFO L87 Difference]: Start difference. First operand 281 states and 304 transitions. Second operand 26 states. [2018-07-25 08:47:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:49,753 INFO L93 Difference]: Finished difference Result 305 states and 330 transitions. [2018-07-25 08:47:49,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:47:49,754 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 280 [2018-07-25 08:47:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:49,756 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:47:49,756 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:47:49,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:47:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:47:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 293. [2018-07-25 08:47:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:47:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 317 transitions. [2018-07-25 08:47:49,905 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 317 transitions. Word has length 280 [2018-07-25 08:47:49,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:49,906 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 317 transitions. [2018-07-25 08:47:49,906 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:47:49,906 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 317 transitions. [2018-07-25 08:47:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:47:49,911 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:49,911 INFO L354 BasicCegarLoop]: trace histogram [120, 96, 25, 24, 24, 1, 1, 1] [2018-07-25 08:47:49,911 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:49,912 INFO L82 PathProgramCache]: Analyzing trace with hash -671245929, now seen corresponding path program 27 times [2018-07-25 08:47:49,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 14880 backedges. 0 proven. 14400 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2018-07-25 08:47:50,419 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:50,419 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:47:50,420 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:47:50,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:47:50,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:47:50,421 INFO L87 Difference]: Start difference. First operand 293 states and 317 transitions. Second operand 27 states. [2018-07-25 08:47:50,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:50,815 INFO L93 Difference]: Finished difference Result 317 states and 343 transitions. [2018-07-25 08:47:50,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:47:50,815 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 292 [2018-07-25 08:47:50,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:50,818 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:47:50,818 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:47:50,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:47:50,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:47:50,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 305. [2018-07-25 08:47:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:47:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 330 transitions. [2018-07-25 08:47:50,961 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 330 transitions. Word has length 292 [2018-07-25 08:47:50,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:50,962 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 330 transitions. [2018-07-25 08:47:50,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:47:50,962 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 330 transitions. [2018-07-25 08:47:50,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:47:50,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:50,966 INFO L354 BasicCegarLoop]: trace histogram [125, 100, 26, 25, 25, 1, 1, 1] [2018-07-25 08:47:50,966 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:50,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1556523307, now seen corresponding path program 28 times [2018-07-25 08:47:50,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16150 backedges. 0 proven. 15650 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2018-07-25 08:47:51,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:51,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:47:51,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:47:51,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:47:51,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:47:51,414 INFO L87 Difference]: Start difference. First operand 305 states and 330 transitions. Second operand 28 states. [2018-07-25 08:47:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:51,797 INFO L93 Difference]: Finished difference Result 329 states and 356 transitions. [2018-07-25 08:47:51,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:47:51,797 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 304 [2018-07-25 08:47:51,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:51,800 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:47:51,800 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:47:51,801 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:47:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:47:51,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2018-07-25 08:47:51,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:47:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 343 transitions. [2018-07-25 08:47:51,943 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 343 transitions. Word has length 304 [2018-07-25 08:47:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:51,944 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 343 transitions. [2018-07-25 08:47:51,944 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:47:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 343 transitions. [2018-07-25 08:47:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:47:51,949 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:51,949 INFO L354 BasicCegarLoop]: trace histogram [130, 104, 27, 26, 26, 1, 1, 1] [2018-07-25 08:47:51,949 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:51,949 INFO L82 PathProgramCache]: Analyzing trace with hash -310565101, now seen corresponding path program 29 times [2018-07-25 08:47:51,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 17472 backedges. 0 proven. 16952 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2018-07-25 08:47:52,355 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:52,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:47:52,356 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:47:52,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:47:52,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:47:52,357 INFO L87 Difference]: Start difference. First operand 317 states and 343 transitions. Second operand 29 states. [2018-07-25 08:47:52,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:52,823 INFO L93 Difference]: Finished difference Result 341 states and 369 transitions. [2018-07-25 08:47:52,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:47:52,824 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 316 [2018-07-25 08:47:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:52,826 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:47:52,826 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:47:52,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:47:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:47:52,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 329. [2018-07-25 08:47:52,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:47:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 356 transitions. [2018-07-25 08:47:52,981 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 356 transitions. Word has length 316 [2018-07-25 08:47:52,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:52,982 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 356 transitions. [2018-07-25 08:47:52,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:47:52,982 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 356 transitions. [2018-07-25 08:47:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:47:52,992 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:52,992 INFO L354 BasicCegarLoop]: trace histogram [135, 108, 28, 27, 27, 1, 1, 1] [2018-07-25 08:47:52,993 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:52,993 INFO L82 PathProgramCache]: Analyzing trace with hash 608471633, now seen corresponding path program 30 times [2018-07-25 08:47:52,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18846 backedges. 0 proven. 18306 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2018-07-25 08:47:53,395 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:53,396 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:47:53,396 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:47:53,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:47:53,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:47:53,397 INFO L87 Difference]: Start difference. First operand 329 states and 356 transitions. Second operand 30 states. [2018-07-25 08:47:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:53,804 INFO L93 Difference]: Finished difference Result 353 states and 382 transitions. [2018-07-25 08:47:53,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:47:53,804 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 328 [2018-07-25 08:47:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:53,806 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:47:53,807 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 08:47:53,807 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:47:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 08:47:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 341. [2018-07-25 08:47:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:47:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 369 transitions. [2018-07-25 08:47:53,961 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 369 transitions. Word has length 328 [2018-07-25 08:47:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:53,963 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 369 transitions. [2018-07-25 08:47:53,963 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:47:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 369 transitions. [2018-07-25 08:47:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:47:53,968 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:53,968 INFO L354 BasicCegarLoop]: trace histogram [140, 112, 29, 28, 28, 1, 1, 1] [2018-07-25 08:47:53,968 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash -674561905, now seen corresponding path program 31 times [2018-07-25 08:47:53,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 20272 backedges. 0 proven. 19712 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2018-07-25 08:47:54,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:54,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:47:54,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:47:54,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:47:54,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:47:54,387 INFO L87 Difference]: Start difference. First operand 341 states and 369 transitions. Second operand 31 states. [2018-07-25 08:47:54,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:54,799 INFO L93 Difference]: Finished difference Result 365 states and 395 transitions. [2018-07-25 08:47:54,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:47:54,799 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 340 [2018-07-25 08:47:54,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:54,802 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:47:54,802 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 08:47:54,803 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:47:54,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 08:47:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 353. [2018-07-25 08:47:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 08:47:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 382 transitions. [2018-07-25 08:47:54,978 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 382 transitions. Word has length 340 [2018-07-25 08:47:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:54,979 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 382 transitions. [2018-07-25 08:47:54,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:47:54,979 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 382 transitions. [2018-07-25 08:47:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 08:47:54,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:54,985 INFO L354 BasicCegarLoop]: trace histogram [145, 116, 30, 29, 29, 1, 1, 1] [2018-07-25 08:47:54,985 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:54,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1693709875, now seen corresponding path program 32 times [2018-07-25 08:47:54,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21750 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2018-07-25 08:47:55,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:55,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:47:55,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:47:55,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:47:55,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:47:55,552 INFO L87 Difference]: Start difference. First operand 353 states and 382 transitions. Second operand 32 states. [2018-07-25 08:47:55,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:55,965 INFO L93 Difference]: Finished difference Result 377 states and 408 transitions. [2018-07-25 08:47:55,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:47:55,965 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 352 [2018-07-25 08:47:55,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:55,967 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:47:55,968 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:47:55,968 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:47:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:47:56,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 365. [2018-07-25 08:47:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 08:47:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 395 transitions. [2018-07-25 08:47:56,107 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 395 transitions. Word has length 352 [2018-07-25 08:47:56,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:56,108 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 395 transitions. [2018-07-25 08:47:56,108 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:47:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 395 transitions. [2018-07-25 08:47:56,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 08:47:56,114 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:56,115 INFO L354 BasicCegarLoop]: trace histogram [150, 120, 31, 30, 30, 1, 1, 1] [2018-07-25 08:47:56,115 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:56,115 INFO L82 PathProgramCache]: Analyzing trace with hash -473750005, now seen corresponding path program 33 times [2018-07-25 08:47:56,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 23280 backedges. 0 proven. 22680 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-07-25 08:47:56,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:56,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:47:56,534 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:47:56,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:47:56,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:47:56,535 INFO L87 Difference]: Start difference. First operand 365 states and 395 transitions. Second operand 33 states. [2018-07-25 08:47:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:56,982 INFO L93 Difference]: Finished difference Result 389 states and 421 transitions. [2018-07-25 08:47:56,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:47:56,983 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 364 [2018-07-25 08:47:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:56,985 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:47:56,986 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 08:47:56,987 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:47:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 08:47:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 377. [2018-07-25 08:47:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 08:47:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 408 transitions. [2018-07-25 08:47:57,172 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 408 transitions. Word has length 364 [2018-07-25 08:47:57,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:57,176 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 408 transitions. [2018-07-25 08:47:57,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:47:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 408 transitions. [2018-07-25 08:47:57,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 08:47:57,178 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:57,179 INFO L354 BasicCegarLoop]: trace histogram [155, 124, 32, 31, 31, 1, 1, 1] [2018-07-25 08:47:57,179 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:57,179 INFO L82 PathProgramCache]: Analyzing trace with hash -362031799, now seen corresponding path program 34 times [2018-07-25 08:47:57,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 24862 backedges. 0 proven. 24242 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-07-25 08:47:57,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:57,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:47:57,565 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:47:57,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:47:57,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:47:57,566 INFO L87 Difference]: Start difference. First operand 377 states and 408 transitions. Second operand 34 states. [2018-07-25 08:47:58,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:58,031 INFO L93 Difference]: Finished difference Result 401 states and 434 transitions. [2018-07-25 08:47:58,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:47:58,032 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 376 [2018-07-25 08:47:58,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:58,034 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:47:58,034 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 08:47:58,035 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:47:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 08:47:58,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 389. [2018-07-25 08:47:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 08:47:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 421 transitions. [2018-07-25 08:47:58,276 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 421 transitions. Word has length 376 [2018-07-25 08:47:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:58,277 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 421 transitions. [2018-07-25 08:47:58,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:47:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 421 transitions. [2018-07-25 08:47:58,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 08:47:58,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:58,280 INFO L354 BasicCegarLoop]: trace histogram [160, 128, 33, 32, 32, 1, 1, 1] [2018-07-25 08:47:58,280 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:58,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1975412857, now seen corresponding path program 35 times [2018-07-25 08:47:58,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 26496 backedges. 0 proven. 25856 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2018-07-25 08:47:58,818 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:58,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:47:58,819 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:47:58,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:47:58,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:47:58,820 INFO L87 Difference]: Start difference. First operand 389 states and 421 transitions. Second operand 35 states. [2018-07-25 08:47:59,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:59,356 INFO L93 Difference]: Finished difference Result 413 states and 447 transitions. [2018-07-25 08:47:59,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:47:59,357 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 388 [2018-07-25 08:47:59,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:59,359 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:47:59,359 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 08:47:59,360 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:47:59,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 08:47:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 401. [2018-07-25 08:47:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 08:47:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 434 transitions. [2018-07-25 08:47:59,557 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 434 transitions. Word has length 388 [2018-07-25 08:47:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:59,558 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 434 transitions. [2018-07-25 08:47:59,558 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:47:59,558 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 434 transitions. [2018-07-25 08:47:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 08:47:59,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:59,560 INFO L354 BasicCegarLoop]: trace histogram [165, 132, 34, 33, 33, 1, 1, 1] [2018-07-25 08:47:59,561 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:59,561 INFO L82 PathProgramCache]: Analyzing trace with hash 557837509, now seen corresponding path program 36 times [2018-07-25 08:47:59,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 28182 backedges. 0 proven. 27522 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-07-25 08:48:00,045 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:00,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:48:00,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:48:00,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:48:00,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:48:00,047 INFO L87 Difference]: Start difference. First operand 401 states and 434 transitions. Second operand 36 states. [2018-07-25 08:48:00,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:00,552 INFO L93 Difference]: Finished difference Result 425 states and 460 transitions. [2018-07-25 08:48:00,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:48:00,552 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 400 [2018-07-25 08:48:00,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:00,555 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:48:00,555 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 08:48:00,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:48:00,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 08:48:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 413. [2018-07-25 08:48:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 08:48:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 447 transitions. [2018-07-25 08:48:00,766 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 447 transitions. Word has length 400 [2018-07-25 08:48:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:00,767 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 447 transitions. [2018-07-25 08:48:00,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:48:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 447 transitions. [2018-07-25 08:48:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 08:48:00,770 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:00,770 INFO L354 BasicCegarLoop]: trace histogram [170, 136, 35, 34, 34, 1, 1, 1] [2018-07-25 08:48:00,771 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:00,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1881298179, now seen corresponding path program 37 times [2018-07-25 08:48:00,771 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 29920 backedges. 0 proven. 29240 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2018-07-25 08:48:01,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:01,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:48:01,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:48:01,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:48:01,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:48:01,513 INFO L87 Difference]: Start difference. First operand 413 states and 447 transitions. Second operand 37 states. [2018-07-25 08:48:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:02,106 INFO L93 Difference]: Finished difference Result 437 states and 473 transitions. [2018-07-25 08:48:02,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:48:02,107 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 412 [2018-07-25 08:48:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:02,111 INFO L225 Difference]: With dead ends: 437 [2018-07-25 08:48:02,111 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 08:48:02,112 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:48:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 08:48:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 425. [2018-07-25 08:48:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 08:48:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 460 transitions. [2018-07-25 08:48:02,329 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 460 transitions. Word has length 412 [2018-07-25 08:48:02,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:02,330 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 460 transitions. [2018-07-25 08:48:02,330 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:48:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 460 transitions. [2018-07-25 08:48:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 08:48:02,334 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:02,334 INFO L354 BasicCegarLoop]: trace histogram [175, 140, 36, 35, 35, 1, 1, 1] [2018-07-25 08:48:02,334 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:02,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2053394497, now seen corresponding path program 38 times [2018-07-25 08:48:02,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 31710 backedges. 0 proven. 31010 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2018-07-25 08:48:02,777 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:02,777 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:48:02,778 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:48:02,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:48:02,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:48:02,779 INFO L87 Difference]: Start difference. First operand 425 states and 460 transitions. Second operand 38 states. [2018-07-25 08:48:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:03,197 INFO L93 Difference]: Finished difference Result 449 states and 486 transitions. [2018-07-25 08:48:03,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:48:03,197 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 424 [2018-07-25 08:48:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:03,205 INFO L225 Difference]: With dead ends: 449 [2018-07-25 08:48:03,205 INFO L226 Difference]: Without dead ends: 447 [2018-07-25 08:48:03,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:48:03,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-07-25 08:48:03,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 437. [2018-07-25 08:48:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 08:48:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 473 transitions. [2018-07-25 08:48:03,379 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 473 transitions. Word has length 424 [2018-07-25 08:48:03,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:03,380 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 473 transitions. [2018-07-25 08:48:03,380 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:48:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 473 transitions. [2018-07-25 08:48:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-25 08:48:03,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:03,383 INFO L354 BasicCegarLoop]: trace histogram [180, 144, 37, 36, 36, 1, 1, 1] [2018-07-25 08:48:03,384 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:03,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1715560063, now seen corresponding path program 39 times [2018-07-25 08:48:03,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 33552 backedges. 0 proven. 32832 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2018-07-25 08:48:03,892 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:03,892 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:48:03,892 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:48:03,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:48:03,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:48:03,893 INFO L87 Difference]: Start difference. First operand 437 states and 473 transitions. Second operand 39 states. [2018-07-25 08:48:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:04,349 INFO L93 Difference]: Finished difference Result 461 states and 499 transitions. [2018-07-25 08:48:04,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:48:04,349 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 436 [2018-07-25 08:48:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:04,352 INFO L225 Difference]: With dead ends: 461 [2018-07-25 08:48:04,353 INFO L226 Difference]: Without dead ends: 459 [2018-07-25 08:48:04,354 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:48:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-07-25 08:48:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 449. [2018-07-25 08:48:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-07-25 08:48:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 486 transitions. [2018-07-25 08:48:04,602 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 486 transitions. Word has length 436 [2018-07-25 08:48:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:04,602 INFO L472 AbstractCegarLoop]: Abstraction has 449 states and 486 transitions. [2018-07-25 08:48:04,602 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:48:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 486 transitions. [2018-07-25 08:48:04,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-07-25 08:48:04,605 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:04,605 INFO L354 BasicCegarLoop]: trace histogram [185, 148, 38, 37, 37, 1, 1, 1] [2018-07-25 08:48:04,605 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:04,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1555365821, now seen corresponding path program 40 times [2018-07-25 08:48:04,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 35446 backedges. 0 proven. 34706 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2018-07-25 08:48:05,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:05,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:48:05,090 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:48:05,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:48:05,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:48:05,091 INFO L87 Difference]: Start difference. First operand 449 states and 486 transitions. Second operand 40 states. [2018-07-25 08:48:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:05,572 INFO L93 Difference]: Finished difference Result 473 states and 512 transitions. [2018-07-25 08:48:05,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:48:05,572 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 448 [2018-07-25 08:48:05,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:05,575 INFO L225 Difference]: With dead ends: 473 [2018-07-25 08:48:05,575 INFO L226 Difference]: Without dead ends: 471 [2018-07-25 08:48:05,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:48:05,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-07-25 08:48:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 461. [2018-07-25 08:48:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-07-25 08:48:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 499 transitions. [2018-07-25 08:48:05,797 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 499 transitions. Word has length 448 [2018-07-25 08:48:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:05,797 INFO L472 AbstractCegarLoop]: Abstraction has 461 states and 499 transitions. [2018-07-25 08:48:05,797 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:48:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 499 transitions. [2018-07-25 08:48:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-07-25 08:48:05,801 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:05,801 INFO L354 BasicCegarLoop]: trace histogram [190, 152, 39, 38, 38, 1, 1, 1] [2018-07-25 08:48:05,801 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1769649147, now seen corresponding path program 41 times [2018-07-25 08:48:05,802 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 37392 backedges. 0 proven. 36632 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2018-07-25 08:48:06,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:06,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:48:06,251 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:48:06,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:48:06,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:48:06,252 INFO L87 Difference]: Start difference. First operand 461 states and 499 transitions. Second operand 41 states. [2018-07-25 08:48:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:06,785 INFO L93 Difference]: Finished difference Result 485 states and 525 transitions. [2018-07-25 08:48:06,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:48:06,785 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 460 [2018-07-25 08:48:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:06,788 INFO L225 Difference]: With dead ends: 485 [2018-07-25 08:48:06,788 INFO L226 Difference]: Without dead ends: 483 [2018-07-25 08:48:06,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:48:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-07-25 08:48:06,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 473. [2018-07-25 08:48:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-07-25 08:48:07,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 512 transitions. [2018-07-25 08:48:07,000 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 512 transitions. Word has length 460 [2018-07-25 08:48:07,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:07,001 INFO L472 AbstractCegarLoop]: Abstraction has 473 states and 512 transitions. [2018-07-25 08:48:07,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:48:07,001 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 512 transitions. [2018-07-25 08:48:07,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-07-25 08:48:07,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:07,005 INFO L354 BasicCegarLoop]: trace histogram [195, 156, 40, 39, 39, 1, 1, 1] [2018-07-25 08:48:07,005 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:07,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1527642937, now seen corresponding path program 42 times [2018-07-25 08:48:07,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 39390 backedges. 0 proven. 38610 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-07-25 08:48:07,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:07,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:48:07,440 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:48:07,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:48:07,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:48:07,441 INFO L87 Difference]: Start difference. First operand 473 states and 512 transitions. Second operand 42 states. [2018-07-25 08:48:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:07,908 INFO L93 Difference]: Finished difference Result 497 states and 538 transitions. [2018-07-25 08:48:07,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:48:07,909 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 472 [2018-07-25 08:48:07,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:07,911 INFO L225 Difference]: With dead ends: 497 [2018-07-25 08:48:07,911 INFO L226 Difference]: Without dead ends: 495 [2018-07-25 08:48:07,912 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:48:07,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-07-25 08:48:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 485. [2018-07-25 08:48:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-07-25 08:48:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 525 transitions. [2018-07-25 08:48:08,172 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 525 transitions. Word has length 472 [2018-07-25 08:48:08,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:08,173 INFO L472 AbstractCegarLoop]: Abstraction has 485 states and 525 transitions. [2018-07-25 08:48:08,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:48:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 525 transitions. [2018-07-25 08:48:08,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-07-25 08:48:08,176 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:08,176 INFO L354 BasicCegarLoop]: trace histogram [200, 160, 41, 40, 40, 1, 1, 1] [2018-07-25 08:48:08,176 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:08,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1565895305, now seen corresponding path program 43 times [2018-07-25 08:48:08,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 41440 backedges. 0 proven. 40640 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2018-07-25 08:48:08,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:08,708 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:48:08,709 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:48:08,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:48:08,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:48:08,710 INFO L87 Difference]: Start difference. First operand 485 states and 525 transitions. Second operand 43 states. [2018-07-25 08:48:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:09,171 INFO L93 Difference]: Finished difference Result 509 states and 551 transitions. [2018-07-25 08:48:09,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:48:09,172 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 484 [2018-07-25 08:48:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:09,174 INFO L225 Difference]: With dead ends: 509 [2018-07-25 08:48:09,174 INFO L226 Difference]: Without dead ends: 507 [2018-07-25 08:48:09,175 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:48:09,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-07-25 08:48:09,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 497. [2018-07-25 08:48:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2018-07-25 08:48:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 538 transitions. [2018-07-25 08:48:09,444 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 538 transitions. Word has length 484 [2018-07-25 08:48:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:09,444 INFO L472 AbstractCegarLoop]: Abstraction has 497 states and 538 transitions. [2018-07-25 08:48:09,444 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:48:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 538 transitions. [2018-07-25 08:48:09,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-07-25 08:48:09,447 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:09,448 INFO L354 BasicCegarLoop]: trace histogram [205, 164, 42, 41, 41, 1, 1, 1] [2018-07-25 08:48:09,448 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:09,448 INFO L82 PathProgramCache]: Analyzing trace with hash 877347509, now seen corresponding path program 44 times [2018-07-25 08:48:09,448 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 43542 backedges. 0 proven. 42722 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2018-07-25 08:48:09,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:09,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:48:09,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:48:09,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:48:09,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:48:09,962 INFO L87 Difference]: Start difference. First operand 497 states and 538 transitions. Second operand 44 states. [2018-07-25 08:48:10,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:10,453 INFO L93 Difference]: Finished difference Result 521 states and 564 transitions. [2018-07-25 08:48:10,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:48:10,453 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 496 [2018-07-25 08:48:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:10,457 INFO L225 Difference]: With dead ends: 521 [2018-07-25 08:48:10,457 INFO L226 Difference]: Without dead ends: 519 [2018-07-25 08:48:10,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:48:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2018-07-25 08:48:10,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 509. [2018-07-25 08:48:10,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-07-25 08:48:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 551 transitions. [2018-07-25 08:48:10,804 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 551 transitions. Word has length 496 [2018-07-25 08:48:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:10,805 INFO L472 AbstractCegarLoop]: Abstraction has 509 states and 551 transitions. [2018-07-25 08:48:10,805 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:48:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 551 transitions. [2018-07-25 08:48:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-07-25 08:48:10,807 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:10,808 INFO L354 BasicCegarLoop]: trace histogram [210, 168, 43, 42, 42, 1, 1, 1] [2018-07-25 08:48:10,808 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:10,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1722565363, now seen corresponding path program 45 times [2018-07-25 08:48:10,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 45696 backedges. 0 proven. 44856 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2018-07-25 08:48:11,370 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:11,370 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:48:11,371 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:48:11,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:48:11,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:48:11,372 INFO L87 Difference]: Start difference. First operand 509 states and 551 transitions. Second operand 45 states. [2018-07-25 08:48:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:11,971 INFO L93 Difference]: Finished difference Result 533 states and 577 transitions. [2018-07-25 08:48:11,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:48:11,971 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 508 [2018-07-25 08:48:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:11,974 INFO L225 Difference]: With dead ends: 533 [2018-07-25 08:48:11,974 INFO L226 Difference]: Without dead ends: 531 [2018-07-25 08:48:11,975 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:48:11,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-07-25 08:48:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 521. [2018-07-25 08:48:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2018-07-25 08:48:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 564 transitions. [2018-07-25 08:48:12,292 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 564 transitions. Word has length 508 [2018-07-25 08:48:12,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:12,292 INFO L472 AbstractCegarLoop]: Abstraction has 521 states and 564 transitions. [2018-07-25 08:48:12,293 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:48:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 564 transitions. [2018-07-25 08:48:12,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-07-25 08:48:12,296 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:12,297 INFO L354 BasicCegarLoop]: trace histogram [215, 172, 44, 43, 43, 1, 1, 1] [2018-07-25 08:48:12,297 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:12,297 INFO L82 PathProgramCache]: Analyzing trace with hash -750201295, now seen corresponding path program 46 times [2018-07-25 08:48:12,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 47902 backedges. 0 proven. 47042 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2018-07-25 08:48:12,854 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:12,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:48:12,855 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:48:12,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:48:12,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:48:12,856 INFO L87 Difference]: Start difference. First operand 521 states and 564 transitions. Second operand 46 states. [2018-07-25 08:48:13,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:13,496 INFO L93 Difference]: Finished difference Result 545 states and 590 transitions. [2018-07-25 08:48:13,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:48:13,496 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 520 [2018-07-25 08:48:13,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:13,499 INFO L225 Difference]: With dead ends: 545 [2018-07-25 08:48:13,499 INFO L226 Difference]: Without dead ends: 543 [2018-07-25 08:48:13,500 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:48:13,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-07-25 08:48:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 533. [2018-07-25 08:48:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2018-07-25 08:48:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 577 transitions. [2018-07-25 08:48:13,775 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 577 transitions. Word has length 520 [2018-07-25 08:48:13,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:13,776 INFO L472 AbstractCegarLoop]: Abstraction has 533 states and 577 transitions. [2018-07-25 08:48:13,776 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:48:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 577 transitions. [2018-07-25 08:48:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-07-25 08:48:13,778 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:13,778 INFO L354 BasicCegarLoop]: trace histogram [220, 176, 45, 44, 44, 1, 1, 1] [2018-07-25 08:48:13,778 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash 912030831, now seen corresponding path program 47 times [2018-07-25 08:48:13,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 50160 backedges. 0 proven. 49280 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-07-25 08:48:14,424 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:14,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:48:14,424 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:48:14,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:48:14,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:48:14,425 INFO L87 Difference]: Start difference. First operand 533 states and 577 transitions. Second operand 47 states. [2018-07-25 08:48:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:15,031 INFO L93 Difference]: Finished difference Result 557 states and 603 transitions. [2018-07-25 08:48:15,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:48:15,032 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 532 [2018-07-25 08:48:15,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:15,034 INFO L225 Difference]: With dead ends: 557 [2018-07-25 08:48:15,034 INFO L226 Difference]: Without dead ends: 555 [2018-07-25 08:48:15,034 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:48:15,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2018-07-25 08:48:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 545. [2018-07-25 08:48:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2018-07-25 08:48:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 590 transitions. [2018-07-25 08:48:15,308 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 590 transitions. Word has length 532 [2018-07-25 08:48:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:15,308 INFO L472 AbstractCegarLoop]: Abstraction has 545 states and 590 transitions. [2018-07-25 08:48:15,308 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:48:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 590 transitions. [2018-07-25 08:48:15,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-07-25 08:48:15,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:15,312 INFO L354 BasicCegarLoop]: trace histogram [225, 180, 46, 45, 45, 1, 1, 1] [2018-07-25 08:48:15,313 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:15,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1323480493, now seen corresponding path program 48 times [2018-07-25 08:48:15,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 52470 backedges. 0 proven. 51570 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2018-07-25 08:48:15,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:15,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:48:15,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:48:15,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:48:15,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:48:15,962 INFO L87 Difference]: Start difference. First operand 545 states and 590 transitions. Second operand 48 states. [2018-07-25 08:48:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:16,484 INFO L93 Difference]: Finished difference Result 569 states and 616 transitions. [2018-07-25 08:48:16,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:48:16,484 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 544 [2018-07-25 08:48:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:16,486 INFO L225 Difference]: With dead ends: 569 [2018-07-25 08:48:16,487 INFO L226 Difference]: Without dead ends: 567 [2018-07-25 08:48:16,487 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:48:16,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2018-07-25 08:48:16,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 557. [2018-07-25 08:48:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2018-07-25 08:48:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 603 transitions. [2018-07-25 08:48:16,844 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 603 transitions. Word has length 544 [2018-07-25 08:48:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:16,845 INFO L472 AbstractCegarLoop]: Abstraction has 557 states and 603 transitions. [2018-07-25 08:48:16,845 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:48:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 603 transitions. [2018-07-25 08:48:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2018-07-25 08:48:16,849 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:16,849 INFO L354 BasicCegarLoop]: trace histogram [230, 184, 47, 46, 46, 1, 1, 1] [2018-07-25 08:48:16,850 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:16,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1097399829, now seen corresponding path program 49 times [2018-07-25 08:48:16,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:17,476 INFO L134 CoverageAnalysis]: Checked inductivity of 54832 backedges. 0 proven. 53912 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2018-07-25 08:48:17,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:17,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:48:17,477 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:48:17,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:48:17,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:48:17,478 INFO L87 Difference]: Start difference. First operand 557 states and 603 transitions. Second operand 49 states. [2018-07-25 08:48:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:18,165 INFO L93 Difference]: Finished difference Result 581 states and 629 transitions. [2018-07-25 08:48:18,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:48:18,165 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 556 [2018-07-25 08:48:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:18,167 INFO L225 Difference]: With dead ends: 581 [2018-07-25 08:48:18,167 INFO L226 Difference]: Without dead ends: 579 [2018-07-25 08:48:18,168 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:48:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2018-07-25 08:48:18,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 569. [2018-07-25 08:48:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2018-07-25 08:48:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 616 transitions. [2018-07-25 08:48:18,465 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 616 transitions. Word has length 556 [2018-07-25 08:48:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:18,465 INFO L472 AbstractCegarLoop]: Abstraction has 569 states and 616 transitions. [2018-07-25 08:48:18,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:48:18,466 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 616 transitions. [2018-07-25 08:48:18,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-07-25 08:48:18,469 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:18,470 INFO L354 BasicCegarLoop]: trace histogram [235, 188, 48, 47, 47, 1, 1, 1] [2018-07-25 08:48:18,470 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:18,470 INFO L82 PathProgramCache]: Analyzing trace with hash -369827543, now seen corresponding path program 50 times [2018-07-25 08:48:18,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 57246 backedges. 0 proven. 56306 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2018-07-25 08:48:19,090 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:19,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:48:19,090 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:48:19,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:48:19,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:48:19,091 INFO L87 Difference]: Start difference. First operand 569 states and 616 transitions. Second operand 50 states. [2018-07-25 08:48:19,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:19,655 INFO L93 Difference]: Finished difference Result 593 states and 642 transitions. [2018-07-25 08:48:19,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:48:19,656 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 568 [2018-07-25 08:48:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:19,659 INFO L225 Difference]: With dead ends: 593 [2018-07-25 08:48:19,659 INFO L226 Difference]: Without dead ends: 591 [2018-07-25 08:48:19,660 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:48:19,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-07-25 08:48:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 581. [2018-07-25 08:48:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-07-25 08:48:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 629 transitions. [2018-07-25 08:48:19,946 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 629 transitions. Word has length 568 [2018-07-25 08:48:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:19,946 INFO L472 AbstractCegarLoop]: Abstraction has 581 states and 629 transitions. [2018-07-25 08:48:19,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:48:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 629 transitions. [2018-07-25 08:48:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2018-07-25 08:48:19,950 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:19,950 INFO L354 BasicCegarLoop]: trace histogram [240, 192, 49, 48, 48, 1, 1, 1] [2018-07-25 08:48:19,951 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:19,951 INFO L82 PathProgramCache]: Analyzing trace with hash -667430041, now seen corresponding path program 51 times [2018-07-25 08:48:19,951 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 59712 backedges. 0 proven. 58752 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-07-25 08:48:20,609 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:20,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:48:20,610 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:48:20,610 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:48:20,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:48:20,611 INFO L87 Difference]: Start difference. First operand 581 states and 629 transitions. Second operand 51 states. [2018-07-25 08:48:21,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:21,253 INFO L93 Difference]: Finished difference Result 605 states and 655 transitions. [2018-07-25 08:48:21,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:48:21,254 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 580 [2018-07-25 08:48:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:21,256 INFO L225 Difference]: With dead ends: 605 [2018-07-25 08:48:21,256 INFO L226 Difference]: Without dead ends: 603 [2018-07-25 08:48:21,257 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:48:21,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2018-07-25 08:48:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 593. [2018-07-25 08:48:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2018-07-25 08:48:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 642 transitions. [2018-07-25 08:48:21,542 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 642 transitions. Word has length 580 [2018-07-25 08:48:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:21,542 INFO L472 AbstractCegarLoop]: Abstraction has 593 states and 642 transitions. [2018-07-25 08:48:21,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:48:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 642 transitions. [2018-07-25 08:48:21,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-07-25 08:48:21,546 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:21,546 INFO L354 BasicCegarLoop]: trace histogram [245, 196, 50, 49, 49, 1, 1, 1] [2018-07-25 08:48:21,547 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:21,547 INFO L82 PathProgramCache]: Analyzing trace with hash 324753573, now seen corresponding path program 52 times [2018-07-25 08:48:21,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 62230 backedges. 0 proven. 61250 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2018-07-25 08:48:22,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:22,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:48:22,211 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:48:22,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:48:22,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:48:22,212 INFO L87 Difference]: Start difference. First operand 593 states and 642 transitions. Second operand 52 states. [2018-07-25 08:48:22,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:22,856 INFO L93 Difference]: Finished difference Result 617 states and 668 transitions. [2018-07-25 08:48:22,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:48:22,856 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 592 [2018-07-25 08:48:22,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:22,858 INFO L225 Difference]: With dead ends: 617 [2018-07-25 08:48:22,858 INFO L226 Difference]: Without dead ends: 615 [2018-07-25 08:48:22,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:48:22,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2018-07-25 08:48:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 605. [2018-07-25 08:48:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2018-07-25 08:48:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 655 transitions. [2018-07-25 08:48:23,189 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 655 transitions. Word has length 592 [2018-07-25 08:48:23,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:23,189 INFO L472 AbstractCegarLoop]: Abstraction has 605 states and 655 transitions. [2018-07-25 08:48:23,189 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:48:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 655 transitions. [2018-07-25 08:48:23,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2018-07-25 08:48:23,193 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:23,194 INFO L354 BasicCegarLoop]: trace histogram [250, 200, 51, 50, 50, 1, 1, 1] [2018-07-25 08:48:23,194 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:23,195 INFO L82 PathProgramCache]: Analyzing trace with hash -2011500317, now seen corresponding path program 53 times [2018-07-25 08:48:23,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 64800 backedges. 0 proven. 63800 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2018-07-25 08:48:23,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:23,990 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:48:23,990 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:48:23,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:48:23,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:48:23,991 INFO L87 Difference]: Start difference. First operand 605 states and 655 transitions. Second operand 53 states. [2018-07-25 08:48:24,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:24,608 INFO L93 Difference]: Finished difference Result 629 states and 681 transitions. [2018-07-25 08:48:24,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:48:24,608 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 604 [2018-07-25 08:48:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:24,610 INFO L225 Difference]: With dead ends: 629 [2018-07-25 08:48:24,611 INFO L226 Difference]: Without dead ends: 627 [2018-07-25 08:48:24,611 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:48:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2018-07-25 08:48:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 617. [2018-07-25 08:48:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2018-07-25 08:48:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 668 transitions. [2018-07-25 08:48:24,943 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 668 transitions. Word has length 604 [2018-07-25 08:48:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:24,943 INFO L472 AbstractCegarLoop]: Abstraction has 617 states and 668 transitions. [2018-07-25 08:48:24,943 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:48:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 668 transitions. [2018-07-25 08:48:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2018-07-25 08:48:24,947 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:24,947 INFO L354 BasicCegarLoop]: trace histogram [255, 204, 52, 51, 51, 1, 1, 1] [2018-07-25 08:48:24,947 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:24,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1710365729, now seen corresponding path program 54 times [2018-07-25 08:48:24,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 67422 backedges. 0 proven. 66402 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2018-07-25 08:48:25,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:25,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:48:25,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:48:25,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:48:25,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:48:25,622 INFO L87 Difference]: Start difference. First operand 617 states and 668 transitions. Second operand 54 states. [2018-07-25 08:48:26,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:26,361 INFO L93 Difference]: Finished difference Result 641 states and 694 transitions. [2018-07-25 08:48:26,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:48:26,361 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 616 [2018-07-25 08:48:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:26,363 INFO L225 Difference]: With dead ends: 641 [2018-07-25 08:48:26,363 INFO L226 Difference]: Without dead ends: 639 [2018-07-25 08:48:26,364 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:48:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2018-07-25 08:48:26,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 629. [2018-07-25 08:48:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2018-07-25 08:48:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 681 transitions. [2018-07-25 08:48:26,701 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 681 transitions. Word has length 616 [2018-07-25 08:48:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:26,701 INFO L472 AbstractCegarLoop]: Abstraction has 629 states and 681 transitions. [2018-07-25 08:48:26,701 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:48:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 681 transitions. [2018-07-25 08:48:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2018-07-25 08:48:26,704 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:26,704 INFO L354 BasicCegarLoop]: trace histogram [260, 208, 53, 52, 52, 1, 1, 1] [2018-07-25 08:48:26,704 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:26,705 INFO L82 PathProgramCache]: Analyzing trace with hash -14919073, now seen corresponding path program 55 times [2018-07-25 08:48:26,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 70096 backedges. 0 proven. 69056 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2018-07-25 08:48:27,420 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:27,420 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:48:27,421 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:48:27,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:48:27,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:48:27,421 INFO L87 Difference]: Start difference. First operand 629 states and 681 transitions. Second operand 55 states. [2018-07-25 08:48:28,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:28,088 INFO L93 Difference]: Finished difference Result 653 states and 707 transitions. [2018-07-25 08:48:28,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:48:28,088 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 628 [2018-07-25 08:48:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:28,090 INFO L225 Difference]: With dead ends: 653 [2018-07-25 08:48:28,090 INFO L226 Difference]: Without dead ends: 651 [2018-07-25 08:48:28,091 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:48:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2018-07-25 08:48:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 641. [2018-07-25 08:48:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2018-07-25 08:48:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 694 transitions. [2018-07-25 08:48:28,442 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 694 transitions. Word has length 628 [2018-07-25 08:48:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:28,442 INFO L472 AbstractCegarLoop]: Abstraction has 641 states and 694 transitions. [2018-07-25 08:48:28,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:48:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 694 transitions. [2018-07-25 08:48:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-07-25 08:48:28,445 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:28,445 INFO L354 BasicCegarLoop]: trace histogram [265, 212, 54, 53, 53, 1, 1, 1] [2018-07-25 08:48:28,446 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:28,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1466618979, now seen corresponding path program 56 times [2018-07-25 08:48:28,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 72822 backedges. 0 proven. 71762 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2018-07-25 08:48:29,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:29,160 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:48:29,160 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:48:29,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:48:29,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:48:29,161 INFO L87 Difference]: Start difference. First operand 641 states and 694 transitions. Second operand 56 states. [2018-07-25 08:48:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:29,964 INFO L93 Difference]: Finished difference Result 665 states and 720 transitions. [2018-07-25 08:48:29,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:48:29,964 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 640 [2018-07-25 08:48:29,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:29,966 INFO L225 Difference]: With dead ends: 665 [2018-07-25 08:48:29,966 INFO L226 Difference]: Without dead ends: 663 [2018-07-25 08:48:29,966 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:48:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2018-07-25 08:48:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 653. [2018-07-25 08:48:30,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2018-07-25 08:48:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 707 transitions. [2018-07-25 08:48:30,310 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 707 transitions. Word has length 640 [2018-07-25 08:48:30,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:30,310 INFO L472 AbstractCegarLoop]: Abstraction has 653 states and 707 transitions. [2018-07-25 08:48:30,310 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:48:30,310 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 707 transitions. [2018-07-25 08:48:30,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2018-07-25 08:48:30,313 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:30,313 INFO L354 BasicCegarLoop]: trace histogram [270, 216, 55, 54, 54, 1, 1, 1] [2018-07-25 08:48:30,314 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:30,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1709699109, now seen corresponding path program 57 times [2018-07-25 08:48:30,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 75600 backedges. 0 proven. 74520 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2018-07-25 08:48:31,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:31,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:48:31,038 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:48:31,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:48:31,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:48:31,038 INFO L87 Difference]: Start difference. First operand 653 states and 707 transitions. Second operand 57 states. [2018-07-25 08:48:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:31,768 INFO L93 Difference]: Finished difference Result 677 states and 733 transitions. [2018-07-25 08:48:31,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:48:31,768 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 652 [2018-07-25 08:48:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:31,770 INFO L225 Difference]: With dead ends: 677 [2018-07-25 08:48:31,770 INFO L226 Difference]: Without dead ends: 675 [2018-07-25 08:48:31,771 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:48:31,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2018-07-25 08:48:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 665. [2018-07-25 08:48:32,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2018-07-25 08:48:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 720 transitions. [2018-07-25 08:48:32,145 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 720 transitions. Word has length 652 [2018-07-25 08:48:32,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:32,145 INFO L472 AbstractCegarLoop]: Abstraction has 665 states and 720 transitions. [2018-07-25 08:48:32,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:48:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 720 transitions. [2018-07-25 08:48:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-07-25 08:48:32,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:32,149 INFO L354 BasicCegarLoop]: trace histogram [275, 220, 56, 55, 55, 1, 1, 1] [2018-07-25 08:48:32,149 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:32,149 INFO L82 PathProgramCache]: Analyzing trace with hash -836729063, now seen corresponding path program 58 times [2018-07-25 08:48:32,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 78430 backedges. 0 proven. 77330 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2018-07-25 08:48:32,934 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:32,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:48:32,934 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:48:32,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:48:32,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:48:32,935 INFO L87 Difference]: Start difference. First operand 665 states and 720 transitions. Second operand 58 states. [2018-07-25 08:48:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:33,715 INFO L93 Difference]: Finished difference Result 689 states and 746 transitions. [2018-07-25 08:48:33,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:48:33,715 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 664 [2018-07-25 08:48:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:33,717 INFO L225 Difference]: With dead ends: 689 [2018-07-25 08:48:33,717 INFO L226 Difference]: Without dead ends: 687 [2018-07-25 08:48:33,718 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:48:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2018-07-25 08:48:34,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 677. [2018-07-25 08:48:34,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2018-07-25 08:48:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 733 transitions. [2018-07-25 08:48:34,129 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 733 transitions. Word has length 664 [2018-07-25 08:48:34,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:34,129 INFO L472 AbstractCegarLoop]: Abstraction has 677 states and 733 transitions. [2018-07-25 08:48:34,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:48:34,129 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 733 transitions. [2018-07-25 08:48:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2018-07-25 08:48:34,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:34,133 INFO L354 BasicCegarLoop]: trace histogram [280, 224, 57, 56, 56, 1, 1, 1] [2018-07-25 08:48:34,133 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:34,134 INFO L82 PathProgramCache]: Analyzing trace with hash -504753833, now seen corresponding path program 59 times [2018-07-25 08:48:34,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 81312 backedges. 0 proven. 80192 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2018-07-25 08:48:35,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:35,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:48:35,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:48:35,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:48:35,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:48:35,011 INFO L87 Difference]: Start difference. First operand 677 states and 733 transitions. Second operand 59 states. [2018-07-25 08:48:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:35,922 INFO L93 Difference]: Finished difference Result 701 states and 759 transitions. [2018-07-25 08:48:35,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:48:35,922 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 676 [2018-07-25 08:48:35,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:35,925 INFO L225 Difference]: With dead ends: 701 [2018-07-25 08:48:35,926 INFO L226 Difference]: Without dead ends: 699 [2018-07-25 08:48:35,926 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:48:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-07-25 08:48:36,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 689. [2018-07-25 08:48:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2018-07-25 08:48:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 746 transitions. [2018-07-25 08:48:36,363 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 746 transitions. Word has length 676 [2018-07-25 08:48:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:36,363 INFO L472 AbstractCegarLoop]: Abstraction has 689 states and 746 transitions. [2018-07-25 08:48:36,363 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:48:36,363 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 746 transitions. [2018-07-25 08:48:36,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-07-25 08:48:36,367 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:36,367 INFO L354 BasicCegarLoop]: trace histogram [285, 228, 58, 57, 57, 1, 1, 1] [2018-07-25 08:48:36,367 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:36,368 INFO L82 PathProgramCache]: Analyzing trace with hash -177197419, now seen corresponding path program 60 times [2018-07-25 08:48:36,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 84246 backedges. 0 proven. 83106 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2018-07-25 08:48:37,293 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:37,293 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:48:37,293 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:48:37,294 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:48:37,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:48:37,294 INFO L87 Difference]: Start difference. First operand 689 states and 746 transitions. Second operand 60 states. [2018-07-25 08:48:38,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:38,188 INFO L93 Difference]: Finished difference Result 713 states and 772 transitions. [2018-07-25 08:48:38,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:48:38,188 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 688 [2018-07-25 08:48:38,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:38,191 INFO L225 Difference]: With dead ends: 713 [2018-07-25 08:48:38,191 INFO L226 Difference]: Without dead ends: 711 [2018-07-25 08:48:38,191 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:48:38,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2018-07-25 08:48:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 701. [2018-07-25 08:48:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2018-07-25 08:48:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 759 transitions. [2018-07-25 08:48:38,632 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 759 transitions. Word has length 688 [2018-07-25 08:48:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:38,633 INFO L472 AbstractCegarLoop]: Abstraction has 701 states and 759 transitions. [2018-07-25 08:48:38,633 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:48:38,633 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 759 transitions. [2018-07-25 08:48:38,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2018-07-25 08:48:38,637 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:38,638 INFO L354 BasicCegarLoop]: trace histogram [290, 232, 59, 58, 58, 1, 1, 1] [2018-07-25 08:48:38,638 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:38,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1955701037, now seen corresponding path program 61 times [2018-07-25 08:48:38,638 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 87232 backedges. 0 proven. 86072 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2018-07-25 08:48:39,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:39,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:48:39,552 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:48:39,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:48:39,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:48:39,553 INFO L87 Difference]: Start difference. First operand 701 states and 759 transitions. Second operand 61 states. [2018-07-25 08:48:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:40,462 INFO L93 Difference]: Finished difference Result 725 states and 785 transitions. [2018-07-25 08:48:40,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:48:40,463 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 700 [2018-07-25 08:48:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:40,465 INFO L225 Difference]: With dead ends: 725 [2018-07-25 08:48:40,465 INFO L226 Difference]: Without dead ends: 723 [2018-07-25 08:48:40,466 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:48:40,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2018-07-25 08:48:40,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 713. [2018-07-25 08:48:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2018-07-25 08:48:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 772 transitions. [2018-07-25 08:48:40,923 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 772 transitions. Word has length 700 [2018-07-25 08:48:40,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:40,924 INFO L472 AbstractCegarLoop]: Abstraction has 713 states and 772 transitions. [2018-07-25 08:48:40,924 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:48:40,924 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 772 transitions. [2018-07-25 08:48:40,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2018-07-25 08:48:40,929 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:40,929 INFO L354 BasicCegarLoop]: trace histogram [295, 236, 60, 59, 59, 1, 1, 1] [2018-07-25 08:48:40,930 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:40,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1767907857, now seen corresponding path program 62 times [2018-07-25 08:48:40,930 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 90270 backedges. 0 proven. 89090 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-07-25 08:48:41,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:41,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:48:41,830 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:48:41,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:48:41,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:48:41,831 INFO L87 Difference]: Start difference. First operand 713 states and 772 transitions. Second operand 62 states. [2018-07-25 08:48:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:42,749 INFO L93 Difference]: Finished difference Result 737 states and 798 transitions. [2018-07-25 08:48:42,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:48:42,749 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 712 [2018-07-25 08:48:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:42,752 INFO L225 Difference]: With dead ends: 737 [2018-07-25 08:48:42,752 INFO L226 Difference]: Without dead ends: 735 [2018-07-25 08:48:42,753 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:48:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2018-07-25 08:48:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 725. [2018-07-25 08:48:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2018-07-25 08:48:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 785 transitions. [2018-07-25 08:48:43,194 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 785 transitions. Word has length 712 [2018-07-25 08:48:43,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:43,194 INFO L472 AbstractCegarLoop]: Abstraction has 725 states and 785 transitions. [2018-07-25 08:48:43,194 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:48:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 785 transitions. [2018-07-25 08:48:43,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2018-07-25 08:48:43,198 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:43,199 INFO L354 BasicCegarLoop]: trace histogram [300, 240, 61, 60, 60, 1, 1, 1] [2018-07-25 08:48:43,199 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:43,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2004940879, now seen corresponding path program 63 times [2018-07-25 08:48:43,199 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 93360 backedges. 0 proven. 92160 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2018-07-25 08:48:44,160 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:44,160 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:48:44,161 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:48:44,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:48:44,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:48:44,161 INFO L87 Difference]: Start difference. First operand 725 states and 785 transitions. Second operand 63 states. [2018-07-25 08:48:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:45,108 INFO L93 Difference]: Finished difference Result 749 states and 811 transitions. [2018-07-25 08:48:45,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:48:45,109 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 724 [2018-07-25 08:48:45,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:45,111 INFO L225 Difference]: With dead ends: 749 [2018-07-25 08:48:45,112 INFO L226 Difference]: Without dead ends: 747 [2018-07-25 08:48:45,112 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:48:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2018-07-25 08:48:45,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 737. [2018-07-25 08:48:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2018-07-25 08:48:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 798 transitions. [2018-07-25 08:48:45,560 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 798 transitions. Word has length 724 [2018-07-25 08:48:45,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:45,561 INFO L472 AbstractCegarLoop]: Abstraction has 737 states and 798 transitions. [2018-07-25 08:48:45,561 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:48:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 798 transitions. [2018-07-25 08:48:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2018-07-25 08:48:45,565 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:45,565 INFO L354 BasicCegarLoop]: trace histogram [305, 244, 62, 61, 61, 1, 1, 1] [2018-07-25 08:48:45,565 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:45,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1597218419, now seen corresponding path program 64 times [2018-07-25 08:48:45,566 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 96502 backedges. 0 proven. 95282 refuted. 0 times theorem prover too weak. 1220 trivial. 0 not checked. [2018-07-25 08:48:46,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:46,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:48:46,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:48:46,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:48:46,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:48:46,522 INFO L87 Difference]: Start difference. First operand 737 states and 798 transitions. Second operand 64 states. [2018-07-25 08:48:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:47,480 INFO L93 Difference]: Finished difference Result 761 states and 824 transitions. [2018-07-25 08:48:47,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:48:47,480 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 736 [2018-07-25 08:48:47,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:47,483 INFO L225 Difference]: With dead ends: 761 [2018-07-25 08:48:47,484 INFO L226 Difference]: Without dead ends: 759 [2018-07-25 08:48:47,484 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:48:47,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2018-07-25 08:48:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 749. [2018-07-25 08:48:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2018-07-25 08:48:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 811 transitions. [2018-07-25 08:48:48,055 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 811 transitions. Word has length 736 [2018-07-25 08:48:48,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:48,056 INFO L472 AbstractCegarLoop]: Abstraction has 749 states and 811 transitions. [2018-07-25 08:48:48,056 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:48:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 811 transitions. [2018-07-25 08:48:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2018-07-25 08:48:48,060 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:48,060 INFO L354 BasicCegarLoop]: trace histogram [310, 248, 63, 62, 62, 1, 1, 1] [2018-07-25 08:48:48,061 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:48,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1291985461, now seen corresponding path program 65 times [2018-07-25 08:48:48,061 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 99696 backedges. 0 proven. 98456 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-07-25 08:48:49,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:49,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:48:49,131 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:48:49,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:48:49,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:48:49,131 INFO L87 Difference]: Start difference. First operand 749 states and 811 transitions. Second operand 65 states. [2018-07-25 08:48:50,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:50,125 INFO L93 Difference]: Finished difference Result 773 states and 837 transitions. [2018-07-25 08:48:50,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:48:50,126 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 748 [2018-07-25 08:48:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:50,128 INFO L225 Difference]: With dead ends: 773 [2018-07-25 08:48:50,128 INFO L226 Difference]: Without dead ends: 771 [2018-07-25 08:48:50,129 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:48:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2018-07-25 08:48:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 761. [2018-07-25 08:48:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2018-07-25 08:48:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 824 transitions. [2018-07-25 08:48:50,620 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 824 transitions. Word has length 748 [2018-07-25 08:48:50,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:50,621 INFO L472 AbstractCegarLoop]: Abstraction has 761 states and 824 transitions. [2018-07-25 08:48:50,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:48:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 824 transitions. [2018-07-25 08:48:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2018-07-25 08:48:50,625 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:50,626 INFO L354 BasicCegarLoop]: trace histogram [315, 252, 64, 63, 63, 1, 1, 1] [2018-07-25 08:48:50,626 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:50,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1049685257, now seen corresponding path program 66 times [2018-07-25 08:48:50,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 102942 backedges. 0 proven. 101682 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-07-25 08:48:51,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:51,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:48:51,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:48:51,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:48:51,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:48:51,621 INFO L87 Difference]: Start difference. First operand 761 states and 824 transitions. Second operand 66 states. [2018-07-25 08:48:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:52,729 INFO L93 Difference]: Finished difference Result 785 states and 850 transitions. [2018-07-25 08:48:52,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:48:52,729 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 760 [2018-07-25 08:48:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:52,731 INFO L225 Difference]: With dead ends: 785 [2018-07-25 08:48:52,732 INFO L226 Difference]: Without dead ends: 783 [2018-07-25 08:48:52,732 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:48:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2018-07-25 08:48:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 773. [2018-07-25 08:48:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2018-07-25 08:48:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 837 transitions. [2018-07-25 08:48:53,229 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 837 transitions. Word has length 760 [2018-07-25 08:48:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:53,230 INFO L472 AbstractCegarLoop]: Abstraction has 773 states and 837 transitions. [2018-07-25 08:48:53,230 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:48:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 837 transitions. [2018-07-25 08:48:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2018-07-25 08:48:53,234 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:53,234 INFO L354 BasicCegarLoop]: trace histogram [320, 256, 65, 64, 64, 1, 1, 1] [2018-07-25 08:48:53,234 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:53,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1992363847, now seen corresponding path program 67 times [2018-07-25 08:48:53,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 106240 backedges. 0 proven. 104960 refuted. 0 times theorem prover too weak. 1280 trivial. 0 not checked. [2018-07-25 08:48:54,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:54,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:48:54,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:48:54,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:48:54,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:48:54,265 INFO L87 Difference]: Start difference. First operand 773 states and 837 transitions. Second operand 67 states. [2018-07-25 08:48:55,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:55,320 INFO L93 Difference]: Finished difference Result 797 states and 863 transitions. [2018-07-25 08:48:55,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:48:55,321 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 772 [2018-07-25 08:48:55,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:55,323 INFO L225 Difference]: With dead ends: 797 [2018-07-25 08:48:55,323 INFO L226 Difference]: Without dead ends: 795 [2018-07-25 08:48:55,324 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:48:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2018-07-25 08:48:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 785. [2018-07-25 08:48:55,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2018-07-25 08:48:55,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 850 transitions. [2018-07-25 08:48:55,847 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 850 transitions. Word has length 772 [2018-07-25 08:48:55,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:55,848 INFO L472 AbstractCegarLoop]: Abstraction has 785 states and 850 transitions. [2018-07-25 08:48:55,848 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:48:55,848 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 850 transitions. [2018-07-25 08:48:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-07-25 08:48:55,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:55,853 INFO L354 BasicCegarLoop]: trace histogram [325, 260, 66, 65, 65, 1, 1, 1] [2018-07-25 08:48:55,853 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:55,853 INFO L82 PathProgramCache]: Analyzing trace with hash 294241413, now seen corresponding path program 68 times [2018-07-25 08:48:55,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 109590 backedges. 0 proven. 108290 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2018-07-25 08:48:56,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:56,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:48:56,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:48:56,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:48:56,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:48:56,926 INFO L87 Difference]: Start difference. First operand 785 states and 850 transitions. Second operand 68 states. [2018-07-25 08:48:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:57,979 INFO L93 Difference]: Finished difference Result 809 states and 876 transitions. [2018-07-25 08:48:57,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:48:57,980 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 784 [2018-07-25 08:48:57,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:57,983 INFO L225 Difference]: With dead ends: 809 [2018-07-25 08:48:57,984 INFO L226 Difference]: Without dead ends: 807 [2018-07-25 08:48:57,984 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:48:57,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2018-07-25 08:48:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 797. [2018-07-25 08:48:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-07-25 08:48:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 863 transitions. [2018-07-25 08:48:58,552 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 863 transitions. Word has length 784 [2018-07-25 08:48:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:58,552 INFO L472 AbstractCegarLoop]: Abstraction has 797 states and 863 transitions. [2018-07-25 08:48:58,552 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:48:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 863 transitions. [2018-07-25 08:48:58,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2018-07-25 08:48:58,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:58,557 INFO L354 BasicCegarLoop]: trace histogram [330, 264, 67, 66, 66, 1, 1, 1] [2018-07-25 08:48:58,558 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:58,558 INFO L82 PathProgramCache]: Analyzing trace with hash 665226435, now seen corresponding path program 69 times [2018-07-25 08:48:58,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 112992 backedges. 0 proven. 111672 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2018-07-25 08:48:59,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:59,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:48:59,770 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:48:59,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:48:59,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:48:59,771 INFO L87 Difference]: Start difference. First operand 797 states and 863 transitions. Second operand 69 states. [2018-07-25 08:49:00,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:00,977 INFO L93 Difference]: Finished difference Result 821 states and 889 transitions. [2018-07-25 08:49:00,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:49:00,977 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 796 [2018-07-25 08:49:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:00,980 INFO L225 Difference]: With dead ends: 821 [2018-07-25 08:49:00,980 INFO L226 Difference]: Without dead ends: 819 [2018-07-25 08:49:00,980 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:49:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-07-25 08:49:01,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 809. [2018-07-25 08:49:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2018-07-25 08:49:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 876 transitions. [2018-07-25 08:49:01,527 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 876 transitions. Word has length 796 [2018-07-25 08:49:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:01,528 INFO L472 AbstractCegarLoop]: Abstraction has 809 states and 876 transitions. [2018-07-25 08:49:01,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:49:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 876 transitions. [2018-07-25 08:49:01,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2018-07-25 08:49:01,532 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:01,532 INFO L354 BasicCegarLoop]: trace histogram [335, 268, 68, 67, 67, 1, 1, 1] [2018-07-25 08:49:01,532 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:01,533 INFO L82 PathProgramCache]: Analyzing trace with hash 345171969, now seen corresponding path program 70 times [2018-07-25 08:49:01,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 116446 backedges. 0 proven. 115106 refuted. 0 times theorem prover too weak. 1340 trivial. 0 not checked. [2018-07-25 08:49:02,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:02,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:49:02,784 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:49:02,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:49:02,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:49:02,785 INFO L87 Difference]: Start difference. First operand 809 states and 876 transitions. Second operand 70 states. [2018-07-25 08:49:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:04,013 INFO L93 Difference]: Finished difference Result 833 states and 902 transitions. [2018-07-25 08:49:04,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:49:04,014 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 808 [2018-07-25 08:49:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:04,017 INFO L225 Difference]: With dead ends: 833 [2018-07-25 08:49:04,017 INFO L226 Difference]: Without dead ends: 831 [2018-07-25 08:49:04,018 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:49:04,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2018-07-25 08:49:04,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 821. [2018-07-25 08:49:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2018-07-25 08:49:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 889 transitions. [2018-07-25 08:49:04,650 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 889 transitions. Word has length 808 [2018-07-25 08:49:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:04,651 INFO L472 AbstractCegarLoop]: Abstraction has 821 states and 889 transitions. [2018-07-25 08:49:04,651 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:49:04,651 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 889 transitions. [2018-07-25 08:49:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2018-07-25 08:49:04,656 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:04,656 INFO L354 BasicCegarLoop]: trace histogram [340, 272, 69, 68, 68, 1, 1, 1] [2018-07-25 08:49:04,656 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:04,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1451906623, now seen corresponding path program 71 times [2018-07-25 08:49:04,657 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 119952 backedges. 0 proven. 118592 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2018-07-25 08:49:05,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:05,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:49:05,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:49:05,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:49:05,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:49:05,962 INFO L87 Difference]: Start difference. First operand 821 states and 889 transitions. Second operand 71 states. [2018-07-25 08:49:07,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:07,120 INFO L93 Difference]: Finished difference Result 845 states and 915 transitions. [2018-07-25 08:49:07,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:49:07,120 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 820 [2018-07-25 08:49:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:07,123 INFO L225 Difference]: With dead ends: 845 [2018-07-25 08:49:07,124 INFO L226 Difference]: Without dead ends: 843 [2018-07-25 08:49:07,124 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:49:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2018-07-25 08:49:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 833. [2018-07-25 08:49:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2018-07-25 08:49:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 902 transitions. [2018-07-25 08:49:07,714 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 902 transitions. Word has length 820 [2018-07-25 08:49:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:07,714 INFO L472 AbstractCegarLoop]: Abstraction has 833 states and 902 transitions. [2018-07-25 08:49:07,714 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:49:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 902 transitions. [2018-07-25 08:49:07,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2018-07-25 08:49:07,718 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:07,719 INFO L354 BasicCegarLoop]: trace histogram [345, 276, 70, 69, 69, 1, 1, 1] [2018-07-25 08:49:07,719 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:07,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1854429053, now seen corresponding path program 72 times [2018-07-25 08:49:07,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 123510 backedges. 0 proven. 122130 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2018-07-25 08:49:08,880 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:08,880 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:49:08,881 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:49:08,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:49:08,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:49:08,882 INFO L87 Difference]: Start difference. First operand 833 states and 902 transitions. Second operand 72 states. [2018-07-25 08:49:10,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:10,098 INFO L93 Difference]: Finished difference Result 857 states and 928 transitions. [2018-07-25 08:49:10,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:49:10,098 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 832 [2018-07-25 08:49:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:10,100 INFO L225 Difference]: With dead ends: 857 [2018-07-25 08:49:10,101 INFO L226 Difference]: Without dead ends: 855 [2018-07-25 08:49:10,101 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:49:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2018-07-25 08:49:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 845. [2018-07-25 08:49:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2018-07-25 08:49:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 915 transitions. [2018-07-25 08:49:10,706 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 915 transitions. Word has length 832 [2018-07-25 08:49:10,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:10,706 INFO L472 AbstractCegarLoop]: Abstraction has 845 states and 915 transitions. [2018-07-25 08:49:10,706 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:49:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 915 transitions. [2018-07-25 08:49:10,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2018-07-25 08:49:10,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:10,711 INFO L354 BasicCegarLoop]: trace histogram [350, 280, 71, 70, 70, 1, 1, 1] [2018-07-25 08:49:10,711 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:10,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1068995653, now seen corresponding path program 73 times [2018-07-25 08:49:10,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 127120 backedges. 0 proven. 125720 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2018-07-25 08:49:11,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:11,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:49:11,905 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:49:11,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:49:11,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:49:11,906 INFO L87 Difference]: Start difference. First operand 845 states and 915 transitions. Second operand 73 states. [2018-07-25 08:49:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:13,268 INFO L93 Difference]: Finished difference Result 869 states and 941 transitions. [2018-07-25 08:49:13,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:49:13,268 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 844 [2018-07-25 08:49:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:13,270 INFO L225 Difference]: With dead ends: 869 [2018-07-25 08:49:13,270 INFO L226 Difference]: Without dead ends: 867 [2018-07-25 08:49:13,271 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:49:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2018-07-25 08:49:13,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 857. [2018-07-25 08:49:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2018-07-25 08:49:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 928 transitions. [2018-07-25 08:49:13,898 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 928 transitions. Word has length 844 [2018-07-25 08:49:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:13,898 INFO L472 AbstractCegarLoop]: Abstraction has 857 states and 928 transitions. [2018-07-25 08:49:13,898 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:49:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 928 transitions. [2018-07-25 08:49:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2018-07-25 08:49:13,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:13,903 INFO L354 BasicCegarLoop]: trace histogram [355, 284, 72, 71, 71, 1, 1, 1] [2018-07-25 08:49:13,903 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:13,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1917195001, now seen corresponding path program 74 times [2018-07-25 08:49:13,904 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 130782 backedges. 0 proven. 129362 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2018-07-25 08:49:15,120 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:15,121 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:49:15,121 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:49:15,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:49:15,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:49:15,122 INFO L87 Difference]: Start difference. First operand 857 states and 928 transitions. Second operand 74 states. [2018-07-25 08:49:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:16,547 INFO L93 Difference]: Finished difference Result 881 states and 954 transitions. [2018-07-25 08:49:16,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:49:16,548 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 856 [2018-07-25 08:49:16,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:16,550 INFO L225 Difference]: With dead ends: 881 [2018-07-25 08:49:16,550 INFO L226 Difference]: Without dead ends: 879 [2018-07-25 08:49:16,551 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:49:16,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2018-07-25 08:49:17,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 869. [2018-07-25 08:49:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2018-07-25 08:49:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 941 transitions. [2018-07-25 08:49:17,197 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 941 transitions. Word has length 856 [2018-07-25 08:49:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:17,197 INFO L472 AbstractCegarLoop]: Abstraction has 869 states and 941 transitions. [2018-07-25 08:49:17,197 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:49:17,197 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 941 transitions. [2018-07-25 08:49:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2018-07-25 08:49:17,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:17,202 INFO L354 BasicCegarLoop]: trace histogram [360, 288, 73, 72, 72, 1, 1, 1] [2018-07-25 08:49:17,203 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:17,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1304218935, now seen corresponding path program 75 times [2018-07-25 08:49:17,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 134496 backedges. 0 proven. 133056 refuted. 0 times theorem prover too weak. 1440 trivial. 0 not checked. [2018-07-25 08:49:18,454 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:18,454 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:49:18,454 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:49:18,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:49:18,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:49:18,455 INFO L87 Difference]: Start difference. First operand 869 states and 941 transitions. Second operand 75 states. [2018-07-25 08:49:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:19,785 INFO L93 Difference]: Finished difference Result 893 states and 967 transitions. [2018-07-25 08:49:19,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:49:19,785 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 868 [2018-07-25 08:49:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:19,786 INFO L225 Difference]: With dead ends: 893 [2018-07-25 08:49:19,787 INFO L226 Difference]: Without dead ends: 891 [2018-07-25 08:49:19,787 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:49:19,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2018-07-25 08:49:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 881. [2018-07-25 08:49:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2018-07-25 08:49:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 954 transitions. [2018-07-25 08:49:20,469 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 954 transitions. Word has length 868 [2018-07-25 08:49:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:20,470 INFO L472 AbstractCegarLoop]: Abstraction has 881 states and 954 transitions. [2018-07-25 08:49:20,470 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:49:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 954 transitions. [2018-07-25 08:49:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2018-07-25 08:49:20,475 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:20,475 INFO L354 BasicCegarLoop]: trace histogram [365, 292, 74, 73, 73, 1, 1, 1] [2018-07-25 08:49:20,475 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:20,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1633150347, now seen corresponding path program 76 times [2018-07-25 08:49:20,476 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 138262 backedges. 0 proven. 136802 refuted. 0 times theorem prover too weak. 1460 trivial. 0 not checked. [2018-07-25 08:49:21,816 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:21,816 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:49:21,817 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:49:21,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:49:21,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:49:21,817 INFO L87 Difference]: Start difference. First operand 881 states and 954 transitions. Second operand 76 states. [2018-07-25 08:49:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:23,166 INFO L93 Difference]: Finished difference Result 905 states and 980 transitions. [2018-07-25 08:49:23,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:49:23,167 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 880 [2018-07-25 08:49:23,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:23,168 INFO L225 Difference]: With dead ends: 905 [2018-07-25 08:49:23,168 INFO L226 Difference]: Without dead ends: 903 [2018-07-25 08:49:23,169 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:49:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2018-07-25 08:49:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 893. [2018-07-25 08:49:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2018-07-25 08:49:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 967 transitions. [2018-07-25 08:49:23,855 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 967 transitions. Word has length 880 [2018-07-25 08:49:23,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:23,856 INFO L472 AbstractCegarLoop]: Abstraction has 893 states and 967 transitions. [2018-07-25 08:49:23,856 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:49:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 967 transitions. [2018-07-25 08:49:23,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2018-07-25 08:49:23,863 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:23,864 INFO L354 BasicCegarLoop]: trace histogram [370, 296, 75, 74, 74, 1, 1, 1] [2018-07-25 08:49:23,864 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:23,865 INFO L82 PathProgramCache]: Analyzing trace with hash 331578035, now seen corresponding path program 77 times [2018-07-25 08:49:23,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 142080 backedges. 0 proven. 140600 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-07-25 08:49:25,202 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:25,202 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:49:25,203 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:49:25,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:49:25,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:49:25,203 INFO L87 Difference]: Start difference. First operand 893 states and 967 transitions. Second operand 77 states. [2018-07-25 08:49:26,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:26,632 INFO L93 Difference]: Finished difference Result 917 states and 993 transitions. [2018-07-25 08:49:26,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:49:26,632 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 892 [2018-07-25 08:49:26,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:26,633 INFO L225 Difference]: With dead ends: 917 [2018-07-25 08:49:26,634 INFO L226 Difference]: Without dead ends: 915 [2018-07-25 08:49:26,634 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:49:26,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2018-07-25 08:49:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 905. [2018-07-25 08:49:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2018-07-25 08:49:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 980 transitions. [2018-07-25 08:49:27,397 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 980 transitions. Word has length 892 [2018-07-25 08:49:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:27,398 INFO L472 AbstractCegarLoop]: Abstraction has 905 states and 980 transitions. [2018-07-25 08:49:27,398 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:49:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 980 transitions. [2018-07-25 08:49:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2018-07-25 08:49:27,405 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:27,405 INFO L354 BasicCegarLoop]: trace histogram [375, 300, 76, 75, 75, 1, 1, 1] [2018-07-25 08:49:27,405 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:27,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1635095055, now seen corresponding path program 78 times [2018-07-25 08:49:27,406 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 145950 backedges. 0 proven. 144450 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2018-07-25 08:49:28,902 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:28,902 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:49:28,903 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:49:28,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:49:28,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:49:28,903 INFO L87 Difference]: Start difference. First operand 905 states and 980 transitions. Second operand 78 states. [2018-07-25 08:49:30,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:30,367 INFO L93 Difference]: Finished difference Result 929 states and 1006 transitions. [2018-07-25 08:49:30,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:49:30,367 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 904 [2018-07-25 08:49:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:30,369 INFO L225 Difference]: With dead ends: 929 [2018-07-25 08:49:30,369 INFO L226 Difference]: Without dead ends: 927 [2018-07-25 08:49:30,369 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:49:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2018-07-25 08:49:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 917. [2018-07-25 08:49:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2018-07-25 08:49:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 993 transitions. [2018-07-25 08:49:31,099 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 993 transitions. Word has length 904 [2018-07-25 08:49:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:31,100 INFO L472 AbstractCegarLoop]: Abstraction has 917 states and 993 transitions. [2018-07-25 08:49:31,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:49:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 993 transitions. [2018-07-25 08:49:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2018-07-25 08:49:31,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:31,106 INFO L354 BasicCegarLoop]: trace histogram [380, 304, 77, 76, 76, 1, 1, 1] [2018-07-25 08:49:31,106 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:31,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1396208687, now seen corresponding path program 79 times [2018-07-25 08:49:31,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 149872 backedges. 0 proven. 148352 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2018-07-25 08:49:32,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:32,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:49:32,539 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:49:32,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:49:32,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:49:32,539 INFO L87 Difference]: Start difference. First operand 917 states and 993 transitions. Second operand 79 states. [2018-07-25 08:49:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:34,001 INFO L93 Difference]: Finished difference Result 941 states and 1019 transitions. [2018-07-25 08:49:34,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:49:34,001 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 916 [2018-07-25 08:49:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:34,003 INFO L225 Difference]: With dead ends: 941 [2018-07-25 08:49:34,003 INFO L226 Difference]: Without dead ends: 939 [2018-07-25 08:49:34,003 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:49:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-07-25 08:49:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 929. [2018-07-25 08:49:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2018-07-25 08:49:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1006 transitions. [2018-07-25 08:49:34,745 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1006 transitions. Word has length 916 [2018-07-25 08:49:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:34,746 INFO L472 AbstractCegarLoop]: Abstraction has 929 states and 1006 transitions. [2018-07-25 08:49:34,746 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:49:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1006 transitions. [2018-07-25 08:49:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2018-07-25 08:49:34,751 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:34,752 INFO L354 BasicCegarLoop]: trace histogram [385, 308, 78, 77, 77, 1, 1, 1] [2018-07-25 08:49:34,752 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:34,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1221135725, now seen corresponding path program 80 times [2018-07-25 08:49:34,752 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 153846 backedges. 0 proven. 152306 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2018-07-25 08:49:36,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:36,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:49:36,254 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:49:36,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:49:36,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:49:36,254 INFO L87 Difference]: Start difference. First operand 929 states and 1006 transitions. Second operand 80 states. [2018-07-25 08:49:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:37,855 INFO L93 Difference]: Finished difference Result 953 states and 1032 transitions. [2018-07-25 08:49:37,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:49:37,856 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 928 [2018-07-25 08:49:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:37,858 INFO L225 Difference]: With dead ends: 953 [2018-07-25 08:49:37,858 INFO L226 Difference]: Without dead ends: 951 [2018-07-25 08:49:37,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:49:37,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2018-07-25 08:49:38,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 941. [2018-07-25 08:49:38,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2018-07-25 08:49:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1019 transitions. [2018-07-25 08:49:38,698 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1019 transitions. Word has length 928 [2018-07-25 08:49:38,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:38,698 INFO L472 AbstractCegarLoop]: Abstraction has 941 states and 1019 transitions. [2018-07-25 08:49:38,698 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:49:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1019 transitions. [2018-07-25 08:49:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2018-07-25 08:49:38,704 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:38,705 INFO L354 BasicCegarLoop]: trace histogram [390, 312, 79, 78, 78, 1, 1, 1] [2018-07-25 08:49:38,705 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:38,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2029500843, now seen corresponding path program 81 times [2018-07-25 08:49:38,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 157872 backedges. 0 proven. 156312 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-07-25 08:49:40,158 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:40,158 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:49:40,159 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:49:40,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:49:40,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:49:40,160 INFO L87 Difference]: Start difference. First operand 941 states and 1019 transitions. Second operand 81 states. [2018-07-25 08:49:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:41,775 INFO L93 Difference]: Finished difference Result 965 states and 1045 transitions. [2018-07-25 08:49:41,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:49:41,775 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 940 [2018-07-25 08:49:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:41,777 INFO L225 Difference]: With dead ends: 965 [2018-07-25 08:49:41,777 INFO L226 Difference]: Without dead ends: 963 [2018-07-25 08:49:41,777 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:49:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2018-07-25 08:49:42,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 953. [2018-07-25 08:49:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2018-07-25 08:49:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1032 transitions. [2018-07-25 08:49:42,596 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1032 transitions. Word has length 940 [2018-07-25 08:49:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:42,597 INFO L472 AbstractCegarLoop]: Abstraction has 953 states and 1032 transitions. [2018-07-25 08:49:42,597 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:49:42,597 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1032 transitions. [2018-07-25 08:49:42,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2018-07-25 08:49:42,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:42,606 INFO L354 BasicCegarLoop]: trace histogram [395, 316, 80, 79, 79, 1, 1, 1] [2018-07-25 08:49:42,606 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:42,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1606420247, now seen corresponding path program 82 times [2018-07-25 08:49:42,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 161950 backedges. 0 proven. 160370 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2018-07-25 08:49:44,107 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:44,107 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:49:44,108 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:49:44,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:49:44,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:49:44,109 INFO L87 Difference]: Start difference. First operand 953 states and 1032 transitions. Second operand 82 states. [2018-07-25 08:49:45,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:45,716 INFO L93 Difference]: Finished difference Result 977 states and 1058 transitions. [2018-07-25 08:49:45,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:49:45,717 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 952 [2018-07-25 08:49:45,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:45,720 INFO L225 Difference]: With dead ends: 977 [2018-07-25 08:49:45,720 INFO L226 Difference]: Without dead ends: 975 [2018-07-25 08:49:45,721 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:49:45,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2018-07-25 08:49:46,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 965. [2018-07-25 08:49:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2018-07-25 08:49:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1045 transitions. [2018-07-25 08:49:46,606 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1045 transitions. Word has length 952 [2018-07-25 08:49:46,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:46,606 INFO L472 AbstractCegarLoop]: Abstraction has 965 states and 1045 transitions. [2018-07-25 08:49:46,607 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:49:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1045 transitions. [2018-07-25 08:49:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2018-07-25 08:49:46,614 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:46,615 INFO L354 BasicCegarLoop]: trace histogram [400, 320, 81, 80, 80, 1, 1, 1] [2018-07-25 08:49:46,615 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:46,615 INFO L82 PathProgramCache]: Analyzing trace with hash 501041959, now seen corresponding path program 83 times [2018-07-25 08:49:46,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 166080 backedges. 0 proven. 164480 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2018-07-25 08:49:48,181 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:48,181 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:49:48,182 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:49:48,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:49:48,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:49:48,182 INFO L87 Difference]: Start difference. First operand 965 states and 1045 transitions. Second operand 83 states. [2018-07-25 08:49:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:49,796 INFO L93 Difference]: Finished difference Result 989 states and 1071 transitions. [2018-07-25 08:49:49,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:49:49,796 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 964 [2018-07-25 08:49:49,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:49,798 INFO L225 Difference]: With dead ends: 989 [2018-07-25 08:49:49,798 INFO L226 Difference]: Without dead ends: 987 [2018-07-25 08:49:49,799 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:49:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2018-07-25 08:49:50,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 977. [2018-07-25 08:49:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2018-07-25 08:49:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1058 transitions. [2018-07-25 08:49:50,669 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1058 transitions. Word has length 964 [2018-07-25 08:49:50,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:50,669 INFO L472 AbstractCegarLoop]: Abstraction has 977 states and 1058 transitions. [2018-07-25 08:49:50,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:49:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1058 transitions. [2018-07-25 08:49:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2018-07-25 08:49:50,676 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:50,677 INFO L354 BasicCegarLoop]: trace histogram [405, 324, 82, 81, 81, 1, 1, 1] [2018-07-25 08:49:50,677 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash -741658523, now seen corresponding path program 84 times [2018-07-25 08:49:50,677 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 170262 backedges. 0 proven. 168642 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2018-07-25 08:49:52,355 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:52,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:49:52,356 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:49:52,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:49:52,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:49:52,357 INFO L87 Difference]: Start difference. First operand 977 states and 1058 transitions. Second operand 84 states. [2018-07-25 08:49:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:54,110 INFO L93 Difference]: Finished difference Result 1001 states and 1084 transitions. [2018-07-25 08:49:54,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:49:54,110 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 976 [2018-07-25 08:49:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:54,112 INFO L225 Difference]: With dead ends: 1001 [2018-07-25 08:49:54,112 INFO L226 Difference]: Without dead ends: 999 [2018-07-25 08:49:54,112 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:49:54,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2018-07-25 08:49:54,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 989. [2018-07-25 08:49:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2018-07-25 08:49:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1071 transitions. [2018-07-25 08:49:54,997 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1071 transitions. Word has length 976 [2018-07-25 08:49:54,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:54,997 INFO L472 AbstractCegarLoop]: Abstraction has 989 states and 1071 transitions. [2018-07-25 08:49:54,997 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:49:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1071 transitions. [2018-07-25 08:49:55,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-07-25 08:49:55,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:55,004 INFO L354 BasicCegarLoop]: trace histogram [410, 328, 83, 82, 82, 1, 1, 1] [2018-07-25 08:49:55,005 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:55,005 INFO L82 PathProgramCache]: Analyzing trace with hash 113584291, now seen corresponding path program 85 times [2018-07-25 08:49:55,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 174496 backedges. 0 proven. 172856 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2018-07-25 08:49:56,647 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:56,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:49:56,647 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:49:56,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:49:56,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:49:56,648 INFO L87 Difference]: Start difference. First operand 989 states and 1071 transitions. Second operand 85 states. [2018-07-25 08:49:58,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:58,412 INFO L93 Difference]: Finished difference Result 1013 states and 1097 transitions. [2018-07-25 08:49:58,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:49:58,412 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 988 [2018-07-25 08:49:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:58,415 INFO L225 Difference]: With dead ends: 1013 [2018-07-25 08:49:58,415 INFO L226 Difference]: Without dead ends: 1011 [2018-07-25 08:49:58,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:49:58,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2018-07-25 08:49:59,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2018-07-25 08:49:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2018-07-25 08:49:59,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1084 transitions. [2018-07-25 08:49:59,363 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1084 transitions. Word has length 988 [2018-07-25 08:49:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:59,363 INFO L472 AbstractCegarLoop]: Abstraction has 1001 states and 1084 transitions. [2018-07-25 08:49:59,363 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:49:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1084 transitions. [2018-07-25 08:49:59,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2018-07-25 08:49:59,370 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:59,371 INFO L354 BasicCegarLoop]: trace histogram [415, 332, 84, 83, 83, 1, 1, 1] [2018-07-25 08:49:59,371 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:59,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1044820961, now seen corresponding path program 86 times [2018-07-25 08:49:59,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 178782 backedges. 0 proven. 177122 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2018-07-25 08:50:01,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:01,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:50:01,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:50:01,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:50:01,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:50:01,251 INFO L87 Difference]: Start difference. First operand 1001 states and 1084 transitions. Second operand 86 states. [2018-07-25 08:50:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:03,196 INFO L93 Difference]: Finished difference Result 1025 states and 1110 transitions. [2018-07-25 08:50:03,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:50:03,196 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 1000 [2018-07-25 08:50:03,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:03,198 INFO L225 Difference]: With dead ends: 1025 [2018-07-25 08:50:03,198 INFO L226 Difference]: Without dead ends: 1023 [2018-07-25 08:50:03,198 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:50:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2018-07-25 08:50:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1013. [2018-07-25 08:50:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2018-07-25 08:50:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1097 transitions. [2018-07-25 08:50:04,106 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1097 transitions. Word has length 1000 [2018-07-25 08:50:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:04,106 INFO L472 AbstractCegarLoop]: Abstraction has 1013 states and 1097 transitions. [2018-07-25 08:50:04,106 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:50:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1097 transitions. [2018-07-25 08:50:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2018-07-25 08:50:04,112 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:04,113 INFO L354 BasicCegarLoop]: trace histogram [420, 336, 85, 84, 84, 1, 1, 1] [2018-07-25 08:50:04,113 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:04,113 INFO L82 PathProgramCache]: Analyzing trace with hash 613110303, now seen corresponding path program 87 times [2018-07-25 08:50:04,114 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 183120 backedges. 0 proven. 181440 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2018-07-25 08:50:05,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:05,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:50:05,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:50:05,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:50:05,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:50:05,846 INFO L87 Difference]: Start difference. First operand 1013 states and 1097 transitions. Second operand 87 states. [2018-07-25 08:50:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:07,786 INFO L93 Difference]: Finished difference Result 1037 states and 1123 transitions. [2018-07-25 08:50:07,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:50:07,786 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 1012 [2018-07-25 08:50:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:07,787 INFO L225 Difference]: With dead ends: 1037 [2018-07-25 08:50:07,787 INFO L226 Difference]: Without dead ends: 1035 [2018-07-25 08:50:07,788 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:50:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2018-07-25 08:50:08,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1025. [2018-07-25 08:50:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2018-07-25 08:50:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1110 transitions. [2018-07-25 08:50:08,847 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1110 transitions. Word has length 1012 [2018-07-25 08:50:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:08,847 INFO L472 AbstractCegarLoop]: Abstraction has 1025 states and 1110 transitions. [2018-07-25 08:50:08,847 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:50:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1110 transitions. [2018-07-25 08:50:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2018-07-25 08:50:08,854 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:08,854 INFO L354 BasicCegarLoop]: trace histogram [425, 340, 86, 85, 85, 1, 1, 1] [2018-07-25 08:50:08,855 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1720615773, now seen corresponding path program 88 times [2018-07-25 08:50:08,855 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 187510 backedges. 0 proven. 185810 refuted. 0 times theorem prover too weak. 1700 trivial. 0 not checked. [2018-07-25 08:50:10,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:10,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:50:10,620 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:50:10,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:50:10,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:50:10,620 INFO L87 Difference]: Start difference. First operand 1025 states and 1110 transitions. Second operand 88 states. [2018-07-25 08:50:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:12,634 INFO L93 Difference]: Finished difference Result 1049 states and 1136 transitions. [2018-07-25 08:50:12,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:50:12,634 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 1024 [2018-07-25 08:50:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:12,636 INFO L225 Difference]: With dead ends: 1049 [2018-07-25 08:50:12,636 INFO L226 Difference]: Without dead ends: 1047 [2018-07-25 08:50:12,636 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:50:12,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2018-07-25 08:50:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1037. [2018-07-25 08:50:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-07-25 08:50:13,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1123 transitions. [2018-07-25 08:50:13,718 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1123 transitions. Word has length 1024 [2018-07-25 08:50:13,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:13,719 INFO L472 AbstractCegarLoop]: Abstraction has 1037 states and 1123 transitions. [2018-07-25 08:50:13,719 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:50:13,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1123 transitions. [2018-07-25 08:50:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2018-07-25 08:50:13,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:13,727 INFO L354 BasicCegarLoop]: trace histogram [430, 344, 87, 86, 86, 1, 1, 1] [2018-07-25 08:50:13,728 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:13,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1811167333, now seen corresponding path program 89 times [2018-07-25 08:50:13,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 191952 backedges. 0 proven. 190232 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2018-07-25 08:50:15,582 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:15,582 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:50:15,583 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:50:15,583 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:50:15,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:50:15,583 INFO L87 Difference]: Start difference. First operand 1037 states and 1123 transitions. Second operand 89 states. [2018-07-25 08:50:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:17,508 INFO L93 Difference]: Finished difference Result 1061 states and 1149 transitions. [2018-07-25 08:50:17,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:50:17,509 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 1036 [2018-07-25 08:50:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:17,510 INFO L225 Difference]: With dead ends: 1061 [2018-07-25 08:50:17,510 INFO L226 Difference]: Without dead ends: 1059 [2018-07-25 08:50:17,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:50:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2018-07-25 08:50:18,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1049. [2018-07-25 08:50:18,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2018-07-25 08:50:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1136 transitions. [2018-07-25 08:50:18,502 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1136 transitions. Word has length 1036 [2018-07-25 08:50:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:18,502 INFO L472 AbstractCegarLoop]: Abstraction has 1049 states and 1136 transitions. [2018-07-25 08:50:18,502 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:50:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1136 transitions. [2018-07-25 08:50:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2018-07-25 08:50:18,509 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:18,509 INFO L354 BasicCegarLoop]: trace histogram [435, 348, 88, 87, 87, 1, 1, 1] [2018-07-25 08:50:18,510 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:18,510 INFO L82 PathProgramCache]: Analyzing trace with hash -8479015, now seen corresponding path program 90 times [2018-07-25 08:50:18,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 196446 backedges. 0 proven. 194706 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2018-07-25 08:50:20,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:20,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:50:20,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:50:20,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:50:20,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:50:20,376 INFO L87 Difference]: Start difference. First operand 1049 states and 1136 transitions. Second operand 90 states. [2018-07-25 08:50:22,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:22,309 INFO L93 Difference]: Finished difference Result 1073 states and 1162 transitions. [2018-07-25 08:50:22,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:50:22,309 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 1048 [2018-07-25 08:50:22,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:22,310 INFO L225 Difference]: With dead ends: 1073 [2018-07-25 08:50:22,310 INFO L226 Difference]: Without dead ends: 1071 [2018-07-25 08:50:22,311 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:50:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2018-07-25 08:50:23,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1061. [2018-07-25 08:50:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2018-07-25 08:50:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1149 transitions. [2018-07-25 08:50:23,402 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1149 transitions. Word has length 1048 [2018-07-25 08:50:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:23,402 INFO L472 AbstractCegarLoop]: Abstraction has 1061 states and 1149 transitions. [2018-07-25 08:50:23,402 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:50:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1149 transitions. [2018-07-25 08:50:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2018-07-25 08:50:23,410 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:23,411 INFO L354 BasicCegarLoop]: trace histogram [440, 352, 89, 88, 88, 1, 1, 1] [2018-07-25 08:50:23,411 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:23,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1641903849, now seen corresponding path program 91 times [2018-07-25 08:50:23,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 200992 backedges. 0 proven. 199232 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2018-07-25 08:50:25,284 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:25,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:50:25,285 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:50:25,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:50:25,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:50:25,285 INFO L87 Difference]: Start difference. First operand 1061 states and 1149 transitions. Second operand 91 states. [2018-07-25 08:50:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:27,319 INFO L93 Difference]: Finished difference Result 1085 states and 1175 transitions. [2018-07-25 08:50:27,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:50:27,319 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 1060 [2018-07-25 08:50:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:27,321 INFO L225 Difference]: With dead ends: 1085 [2018-07-25 08:50:27,321 INFO L226 Difference]: Without dead ends: 1083 [2018-07-25 08:50:27,321 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:50:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2018-07-25 08:50:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1073. [2018-07-25 08:50:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-07-25 08:50:28,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1162 transitions. [2018-07-25 08:50:28,369 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1162 transitions. Word has length 1060 [2018-07-25 08:50:28,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:28,370 INFO L472 AbstractCegarLoop]: Abstraction has 1073 states and 1162 transitions. [2018-07-25 08:50:28,370 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:50:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1162 transitions. [2018-07-25 08:50:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2018-07-25 08:50:28,377 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:28,377 INFO L354 BasicCegarLoop]: trace histogram [445, 356, 90, 89, 89, 1, 1, 1] [2018-07-25 08:50:28,378 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:28,378 INFO L82 PathProgramCache]: Analyzing trace with hash -403503531, now seen corresponding path program 92 times [2018-07-25 08:50:28,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 205590 backedges. 0 proven. 203810 refuted. 0 times theorem prover too weak. 1780 trivial. 0 not checked. [2018-07-25 08:50:30,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:30,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:50:30,322 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:50:30,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:50:30,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:50:30,323 INFO L87 Difference]: Start difference. First operand 1073 states and 1162 transitions. Second operand 92 states. [2018-07-25 08:50:32,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:32,398 INFO L93 Difference]: Finished difference Result 1097 states and 1188 transitions. [2018-07-25 08:50:32,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:50:32,399 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 1072 [2018-07-25 08:50:32,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:32,400 INFO L225 Difference]: With dead ends: 1097 [2018-07-25 08:50:32,401 INFO L226 Difference]: Without dead ends: 1095 [2018-07-25 08:50:32,401 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:50:32,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-07-25 08:50:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1085. [2018-07-25 08:50:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2018-07-25 08:50:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1175 transitions. [2018-07-25 08:50:33,526 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1175 transitions. Word has length 1072 [2018-07-25 08:50:33,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:33,526 INFO L472 AbstractCegarLoop]: Abstraction has 1085 states and 1175 transitions. [2018-07-25 08:50:33,526 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:50:33,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1175 transitions. [2018-07-25 08:50:33,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2018-07-25 08:50:33,533 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:33,534 INFO L354 BasicCegarLoop]: trace histogram [450, 360, 91, 90, 90, 1, 1, 1] [2018-07-25 08:50:33,534 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:33,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1213491565, now seen corresponding path program 93 times [2018-07-25 08:50:33,535 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 210240 backedges. 0 proven. 208440 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2018-07-25 08:50:35,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:35,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:50:35,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:50:35,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:50:35,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:50:35,503 INFO L87 Difference]: Start difference. First operand 1085 states and 1175 transitions. Second operand 93 states. [2018-07-25 08:50:37,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:37,685 INFO L93 Difference]: Finished difference Result 1109 states and 1201 transitions. [2018-07-25 08:50:37,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:50:37,686 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 1084 [2018-07-25 08:50:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:37,687 INFO L225 Difference]: With dead ends: 1109 [2018-07-25 08:50:37,687 INFO L226 Difference]: Without dead ends: 1107 [2018-07-25 08:50:37,688 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:50:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2018-07-25 08:50:38,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1097. [2018-07-25 08:50:38,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-07-25 08:50:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1188 transitions. [2018-07-25 08:50:38,807 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1188 transitions. Word has length 1084 [2018-07-25 08:50:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:38,808 INFO L472 AbstractCegarLoop]: Abstraction has 1097 states and 1188 transitions. [2018-07-25 08:50:38,808 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:50:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1188 transitions. [2018-07-25 08:50:38,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2018-07-25 08:50:38,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:38,816 INFO L354 BasicCegarLoop]: trace histogram [455, 364, 92, 91, 91, 1, 1, 1] [2018-07-25 08:50:38,816 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:38,816 INFO L82 PathProgramCache]: Analyzing trace with hash 717732305, now seen corresponding path program 94 times [2018-07-25 08:50:38,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 214942 backedges. 0 proven. 213122 refuted. 0 times theorem prover too weak. 1820 trivial. 0 not checked. [2018-07-25 08:50:40,847 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:40,847 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:50:40,848 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:50:40,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:50:40,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:50:40,849 INFO L87 Difference]: Start difference. First operand 1097 states and 1188 transitions. Second operand 94 states. [2018-07-25 08:50:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:43,035 INFO L93 Difference]: Finished difference Result 1121 states and 1214 transitions. [2018-07-25 08:50:43,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:50:43,035 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 1096 [2018-07-25 08:50:43,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:43,036 INFO L225 Difference]: With dead ends: 1121 [2018-07-25 08:50:43,036 INFO L226 Difference]: Without dead ends: 1119 [2018-07-25 08:50:43,036 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:50:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2018-07-25 08:50:44,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1109. [2018-07-25 08:50:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2018-07-25 08:50:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1201 transitions. [2018-07-25 08:50:44,164 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1201 transitions. Word has length 1096 [2018-07-25 08:50:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:44,164 INFO L472 AbstractCegarLoop]: Abstraction has 1109 states and 1201 transitions. [2018-07-25 08:50:44,164 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:50:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1201 transitions. [2018-07-25 08:50:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2018-07-25 08:50:44,172 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:44,172 INFO L354 BasicCegarLoop]: trace histogram [460, 368, 93, 92, 92, 1, 1, 1] [2018-07-25 08:50:44,173 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:44,173 INFO L82 PathProgramCache]: Analyzing trace with hash -2122125297, now seen corresponding path program 95 times [2018-07-25 08:50:44,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 219696 backedges. 0 proven. 217856 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2018-07-25 08:50:46,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:46,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:50:46,241 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:50:46,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:50:46,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:50:46,241 INFO L87 Difference]: Start difference. First operand 1109 states and 1201 transitions. Second operand 95 states. [2018-07-25 08:50:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:48,557 INFO L93 Difference]: Finished difference Result 1133 states and 1227 transitions. [2018-07-25 08:50:48,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:50:48,557 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 1108 [2018-07-25 08:50:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:48,560 INFO L225 Difference]: With dead ends: 1133 [2018-07-25 08:50:48,560 INFO L226 Difference]: Without dead ends: 1131 [2018-07-25 08:50:48,561 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:50:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2018-07-25 08:50:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1121. [2018-07-25 08:50:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2018-07-25 08:50:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1214 transitions. [2018-07-25 08:50:49,730 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1214 transitions. Word has length 1108 [2018-07-25 08:50:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:49,731 INFO L472 AbstractCegarLoop]: Abstraction has 1121 states and 1214 transitions. [2018-07-25 08:50:49,731 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:50:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1214 transitions. [2018-07-25 08:50:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2018-07-25 08:50:49,738 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:49,739 INFO L354 BasicCegarLoop]: trace histogram [465, 372, 94, 93, 93, 1, 1, 1] [2018-07-25 08:50:49,739 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:49,739 INFO L82 PathProgramCache]: Analyzing trace with hash -19351219, now seen corresponding path program 96 times [2018-07-25 08:50:49,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 224502 backedges. 0 proven. 222642 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2018-07-25 08:50:51,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:51,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:50:51,895 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:50:51,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:50:51,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=8931, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:50:51,896 INFO L87 Difference]: Start difference. First operand 1121 states and 1214 transitions. Second operand 96 states. [2018-07-25 08:50:54,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:54,314 INFO L93 Difference]: Finished difference Result 1145 states and 1240 transitions. [2018-07-25 08:50:54,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:50:54,314 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 1120 [2018-07-25 08:50:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:54,316 INFO L225 Difference]: With dead ends: 1145 [2018-07-25 08:50:54,316 INFO L226 Difference]: Without dead ends: 1143 [2018-07-25 08:50:54,316 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=8931, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:50:54,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2018-07-25 08:50:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1133. [2018-07-25 08:50:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2018-07-25 08:50:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1227 transitions. [2018-07-25 08:50:55,514 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1227 transitions. Word has length 1120 [2018-07-25 08:50:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:55,514 INFO L472 AbstractCegarLoop]: Abstraction has 1133 states and 1227 transitions. [2018-07-25 08:50:55,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:50:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1227 transitions. [2018-07-25 08:50:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2018-07-25 08:50:55,522 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:55,523 INFO L354 BasicCegarLoop]: trace histogram [470, 376, 95, 94, 94, 1, 1, 1] [2018-07-25 08:50:55,523 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:55,523 INFO L82 PathProgramCache]: Analyzing trace with hash -930835061, now seen corresponding path program 97 times [2018-07-25 08:50:55,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 229360 backedges. 0 proven. 227480 refuted. 0 times theorem prover too weak. 1880 trivial. 0 not checked. [2018-07-25 08:50:57,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:57,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:50:57,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:50:57,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:50:57,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:50:57,702 INFO L87 Difference]: Start difference. First operand 1133 states and 1227 transitions. Second operand 97 states. [2018-07-25 08:51:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:00,245 INFO L93 Difference]: Finished difference Result 1157 states and 1253 transitions. [2018-07-25 08:51:00,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:51:00,245 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 1132 [2018-07-25 08:51:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:00,247 INFO L225 Difference]: With dead ends: 1157 [2018-07-25 08:51:00,247 INFO L226 Difference]: Without dead ends: 1155 [2018-07-25 08:51:00,247 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:51:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2018-07-25 08:51:01,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1145. [2018-07-25 08:51:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2018-07-25 08:51:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1240 transitions. [2018-07-25 08:51:01,478 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1240 transitions. Word has length 1132 [2018-07-25 08:51:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:01,479 INFO L472 AbstractCegarLoop]: Abstraction has 1145 states and 1240 transitions. [2018-07-25 08:51:01,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:51:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1240 transitions. [2018-07-25 08:51:01,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2018-07-25 08:51:01,487 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:01,487 INFO L354 BasicCegarLoop]: trace histogram [475, 380, 96, 95, 95, 1, 1, 1] [2018-07-25 08:51:01,487 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:01,488 INFO L82 PathProgramCache]: Analyzing trace with hash -956169015, now seen corresponding path program 98 times [2018-07-25 08:51:01,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 234270 backedges. 0 proven. 232370 refuted. 0 times theorem prover too weak. 1900 trivial. 0 not checked. [2018-07-25 08:51:03,714 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:03,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:51:03,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:51:03,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:51:03,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=9313, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:51:03,715 INFO L87 Difference]: Start difference. First operand 1145 states and 1240 transitions. Second operand 98 states. [2018-07-25 08:51:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:06,244 INFO L93 Difference]: Finished difference Result 1169 states and 1266 transitions. [2018-07-25 08:51:06,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:51:06,244 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 1144 [2018-07-25 08:51:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:06,246 INFO L225 Difference]: With dead ends: 1169 [2018-07-25 08:51:06,246 INFO L226 Difference]: Without dead ends: 1167 [2018-07-25 08:51:06,247 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=9313, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:51:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2018-07-25 08:51:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1157. [2018-07-25 08:51:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-07-25 08:51:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1253 transitions. [2018-07-25 08:51:07,518 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1253 transitions. Word has length 1144 [2018-07-25 08:51:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:07,519 INFO L472 AbstractCegarLoop]: Abstraction has 1157 states and 1253 transitions. [2018-07-25 08:51:07,519 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:51:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1253 transitions. [2018-07-25 08:51:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1157 [2018-07-25 08:51:07,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:07,530 INFO L354 BasicCegarLoop]: trace histogram [480, 384, 97, 96, 96, 1, 1, 1] [2018-07-25 08:51:07,530 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:07,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2054387961, now seen corresponding path program 99 times [2018-07-25 08:51:07,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 239232 backedges. 0 proven. 237312 refuted. 0 times theorem prover too weak. 1920 trivial. 0 not checked. [2018-07-25 08:51:09,815 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:09,815 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:51:09,816 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:51:09,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:51:09,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:51:09,817 INFO L87 Difference]: Start difference. First operand 1157 states and 1253 transitions. Second operand 99 states. [2018-07-25 08:51:12,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:12,418 INFO L93 Difference]: Finished difference Result 1181 states and 1279 transitions. [2018-07-25 08:51:12,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:51:12,419 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 1156 [2018-07-25 08:51:12,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:12,420 INFO L225 Difference]: With dead ends: 1181 [2018-07-25 08:51:12,420 INFO L226 Difference]: Without dead ends: 1179 [2018-07-25 08:51:12,420 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:51:12,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2018-07-25 08:51:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1169. [2018-07-25 08:51:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2018-07-25 08:51:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1266 transitions. [2018-07-25 08:51:13,713 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1266 transitions. Word has length 1156 [2018-07-25 08:51:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:13,713 INFO L472 AbstractCegarLoop]: Abstraction has 1169 states and 1266 transitions. [2018-07-25 08:51:13,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:51:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1266 transitions. [2018-07-25 08:51:13,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1169 [2018-07-25 08:51:13,721 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:13,722 INFO L354 BasicCegarLoop]: trace histogram [485, 388, 98, 97, 97, 1, 1, 1] [2018-07-25 08:51:13,722 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:13,722 INFO L82 PathProgramCache]: Analyzing trace with hash 304061509, now seen corresponding path program 100 times [2018-07-25 08:51:13,723 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 244246 backedges. 0 proven. 242306 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2018-07-25 08:51:16,017 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:16,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:51:16,018 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:51:16,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:51:16,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=9703, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:51:16,019 INFO L87 Difference]: Start difference. First operand 1169 states and 1266 transitions. Second operand 100 states. [2018-07-25 08:51:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:18,545 INFO L93 Difference]: Finished difference Result 1193 states and 1292 transitions. [2018-07-25 08:51:18,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:51:18,546 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 1168 [2018-07-25 08:51:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:18,548 INFO L225 Difference]: With dead ends: 1193 [2018-07-25 08:51:18,548 INFO L226 Difference]: Without dead ends: 1191 [2018-07-25 08:51:18,549 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=9703, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:51:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2018-07-25 08:51:19,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1181. [2018-07-25 08:51:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2018-07-25 08:51:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1279 transitions. [2018-07-25 08:51:19,918 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1279 transitions. Word has length 1168 [2018-07-25 08:51:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:19,919 INFO L472 AbstractCegarLoop]: Abstraction has 1181 states and 1279 transitions. [2018-07-25 08:51:19,919 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:51:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1279 transitions. [2018-07-25 08:51:19,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1181 [2018-07-25 08:51:19,928 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:19,928 INFO L354 BasicCegarLoop]: trace histogram [490, 392, 99, 98, 98, 1, 1, 1] [2018-07-25 08:51:19,928 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:19,928 INFO L82 PathProgramCache]: Analyzing trace with hash -579419005, now seen corresponding path program 101 times [2018-07-25 08:51:19,928 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 249312 backedges. 0 proven. 247352 refuted. 0 times theorem prover too weak. 1960 trivial. 0 not checked. [2018-07-25 08:51:22,310 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:22,311 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:51:22,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:51:22,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:51:22,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:51:22,312 INFO L87 Difference]: Start difference. First operand 1181 states and 1279 transitions. Second operand 101 states. [2018-07-25 08:51:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:24,862 INFO L93 Difference]: Finished difference Result 1205 states and 1305 transitions. [2018-07-25 08:51:24,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:51:24,862 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 1180 [2018-07-25 08:51:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:24,864 INFO L225 Difference]: With dead ends: 1205 [2018-07-25 08:51:24,864 INFO L226 Difference]: Without dead ends: 1203 [2018-07-25 08:51:24,864 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:51:24,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2018-07-25 08:51:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1193. [2018-07-25 08:51:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2018-07-25 08:51:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1292 transitions. [2018-07-25 08:51:26,225 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1292 transitions. Word has length 1180 [2018-07-25 08:51:26,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:26,226 INFO L472 AbstractCegarLoop]: Abstraction has 1193 states and 1292 transitions. [2018-07-25 08:51:26,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:51:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1292 transitions. [2018-07-25 08:51:26,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2018-07-25 08:51:26,234 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:26,235 INFO L354 BasicCegarLoop]: trace histogram [495, 396, 100, 99, 99, 1, 1, 1] [2018-07-25 08:51:26,235 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:26,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1693614143, now seen corresponding path program 102 times [2018-07-25 08:51:26,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 254430 backedges. 0 proven. 252450 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-07-25 08:51:28,613 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:28,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:51:28,614 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:51:28,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:51:28,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=10101, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:51:28,615 INFO L87 Difference]: Start difference. First operand 1193 states and 1292 transitions. Second operand 102 states. [2018-07-25 08:51:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:31,262 INFO L93 Difference]: Finished difference Result 1217 states and 1318 transitions. [2018-07-25 08:51:31,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:51:31,263 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 1192 [2018-07-25 08:51:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:31,264 INFO L225 Difference]: With dead ends: 1217 [2018-07-25 08:51:31,264 INFO L226 Difference]: Without dead ends: 1215 [2018-07-25 08:51:31,265 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=10101, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:51:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2018-07-25 08:51:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1205. [2018-07-25 08:51:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1205 states. [2018-07-25 08:51:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1305 transitions. [2018-07-25 08:51:32,687 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1305 transitions. Word has length 1192 [2018-07-25 08:51:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:32,688 INFO L472 AbstractCegarLoop]: Abstraction has 1205 states and 1305 transitions. [2018-07-25 08:51:32,688 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:51:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1305 transitions. [2018-07-25 08:51:32,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1205 [2018-07-25 08:51:32,696 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:32,696 INFO L354 BasicCegarLoop]: trace histogram [500, 400, 101, 100, 100, 1, 1, 1] [2018-07-25 08:51:32,696 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:32,697 INFO L82 PathProgramCache]: Analyzing trace with hash 555699711, now seen corresponding path program 103 times [2018-07-25 08:51:32,697 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 259600 backedges. 0 proven. 257600 refuted. 0 times theorem prover too weak. 2000 trivial. 0 not checked. [2018-07-25 08:51:35,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:35,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:51:35,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:51:35,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:51:35,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:51:35,106 INFO L87 Difference]: Start difference. First operand 1205 states and 1305 transitions. Second operand 103 states. [2018-07-25 08:51:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:37,979 INFO L93 Difference]: Finished difference Result 1229 states and 1331 transitions. [2018-07-25 08:51:37,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:51:37,979 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 1204 [2018-07-25 08:51:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:37,981 INFO L225 Difference]: With dead ends: 1229 [2018-07-25 08:51:37,981 INFO L226 Difference]: Without dead ends: 1227 [2018-07-25 08:51:37,982 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:51:37,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2018-07-25 08:51:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1217. [2018-07-25 08:51:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2018-07-25 08:51:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1318 transitions. [2018-07-25 08:51:39,452 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1318 transitions. Word has length 1204 [2018-07-25 08:51:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:39,452 INFO L472 AbstractCegarLoop]: Abstraction has 1217 states and 1318 transitions. [2018-07-25 08:51:39,452 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:51:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1318 transitions. [2018-07-25 08:51:39,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2018-07-25 08:51:39,461 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:39,461 INFO L354 BasicCegarLoop]: trace histogram [505, 404, 102, 101, 101, 1, 1, 1] [2018-07-25 08:51:39,461 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:39,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1218948925, now seen corresponding path program 104 times [2018-07-25 08:51:39,461 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 264822 backedges. 0 proven. 262802 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2018-07-25 08:51:41,919 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:41,919 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:51:41,920 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:51:41,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:51:41,920 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=10507, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:51:41,920 INFO L87 Difference]: Start difference. First operand 1217 states and 1318 transitions. Second operand 104 states. [2018-07-25 08:51:44,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:44,689 INFO L93 Difference]: Finished difference Result 1241 states and 1344 transitions. [2018-07-25 08:51:44,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:51:44,689 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 1216 [2018-07-25 08:51:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:44,690 INFO L225 Difference]: With dead ends: 1241 [2018-07-25 08:51:44,690 INFO L226 Difference]: Without dead ends: 1239 [2018-07-25 08:51:44,691 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=10507, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:51:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2018-07-25 08:51:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1229. [2018-07-25 08:51:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2018-07-25 08:51:46,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1331 transitions. [2018-07-25 08:51:46,135 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1331 transitions. Word has length 1216 [2018-07-25 08:51:46,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,136 INFO L472 AbstractCegarLoop]: Abstraction has 1229 states and 1331 transitions. [2018-07-25 08:51:46,136 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:51:46,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1331 transitions. [2018-07-25 08:51:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2018-07-25 08:51:46,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,145 INFO L354 BasicCegarLoop]: trace histogram [510, 408, 103, 102, 102, 1, 1, 1] [2018-07-25 08:51:46,145 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,146 INFO L82 PathProgramCache]: Analyzing trace with hash -849206405, now seen corresponding path program 105 times [2018-07-25 08:51:46,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 270096 backedges. 0 proven. 268056 refuted. 0 times theorem prover too weak. 2040 trivial. 0 not checked. [2018-07-25 08:51:48,639 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,639 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:51:48,640 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:51:48,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:51:48,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:51:48,640 INFO L87 Difference]: Start difference. First operand 1229 states and 1331 transitions. Second operand 105 states. [2018-07-25 08:51:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:51,435 INFO L93 Difference]: Finished difference Result 1253 states and 1357 transitions. [2018-07-25 08:51:51,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:51:51,436 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 1228 [2018-07-25 08:51:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:51,437 INFO L225 Difference]: With dead ends: 1253 [2018-07-25 08:51:51,437 INFO L226 Difference]: Without dead ends: 1251 [2018-07-25 08:51:51,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:51:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2018-07-25 08:51:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1241. [2018-07-25 08:51:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2018-07-25 08:51:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1344 transitions. [2018-07-25 08:51:52,913 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1344 transitions. Word has length 1228 [2018-07-25 08:51:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,914 INFO L472 AbstractCegarLoop]: Abstraction has 1241 states and 1344 transitions. [2018-07-25 08:51:52,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:51:52,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1344 transitions. [2018-07-25 08:51:52,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2018-07-25 08:51:52,922 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,923 INFO L354 BasicCegarLoop]: trace histogram [515, 412, 104, 103, 103, 1, 1, 1] [2018-07-25 08:51:52,923 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,923 INFO L82 PathProgramCache]: Analyzing trace with hash 768223929, now seen corresponding path program 106 times [2018-07-25 08:51:52,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 275422 backedges. 0 proven. 273362 refuted. 0 times theorem prover too weak. 2060 trivial. 0 not checked. [2018-07-25 08:51:55,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:55,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:51:55,478 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:51:55,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:51:55,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=10921, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:51:55,479 INFO L87 Difference]: Start difference. First operand 1241 states and 1344 transitions. Second operand 106 states. Received shutdown request... [2018-07-25 08:51:58,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:51:58,111 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:51:58,117 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:51:58,118 INFO L202 PluginConnector]: Adding new model nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:51:58 BoogieIcfgContainer [2018-07-25 08:51:58,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:51:58,119 INFO L168 Benchmark]: Toolchain (without parser) took 259532.56 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -932.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-25 08:51:58,121 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:51:58,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.94 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:51:58,121 INFO L168 Benchmark]: Boogie Preprocessor took 20.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:51:58,122 INFO L168 Benchmark]: RCFGBuilder took 293.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:51:58,122 INFO L168 Benchmark]: TraceAbstraction took 259171.71 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -942.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-25 08:51:58,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.94 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 293.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259171.71 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -942.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (1241states) and interpolant automaton (currently 100 states, 106 states before enhancement), while ReachableStatesComputation was computing reachable states (1167 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 259.0s OverallTime, 108 OverallIterations, 515 TraceHistogramMax, 105.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 16704 SDtfs, 313 SDslu, 1128110 SDs, 0 SdLazy, 770280 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5582 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1241occurred in iteration=107, 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: 51.3s AutomataMinimizationTime, 107 MinimizatonAttempts, 1016 StatesRemovedByMinimization, 103 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 28.9s InterpolantComputationTime, 64752 NumberOfCodeBlocks, 64752 NumberOfCodeBlocksAsserted, 108 NumberOfCheckSat, 64644 ConstructedInterpolants, 0 QuantifiedInterpolants, 374841052 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 108 InterpolantComputations, 2 PerfectInterpolantSequences, 107256/9587378 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/nested1.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-51-58-146.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested1.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-51-58-146.csv Completed graceful shutdown