java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:24:05,539 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:24:05,541 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:24:05,557 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:24:05,557 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:24:05,558 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:24:05,560 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:24:05,562 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:24:05,565 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:24:05,567 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:24:05,568 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-25 13:24:05,590 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:24:05,591 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:24:05,592 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:24:05,592 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:24:05,593 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:24:05,594 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:24:05,595 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:24:05,595 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:24:05,596 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:24:05,598 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:24:05,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:24:05,613 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:24:05,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:24:05,614 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:24:05,615 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:24:05,615 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:24:05,616 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:24:05,616 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:24:05,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:24:05,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:24:05,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:24:05,687 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:24:05,688 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:24:05,688 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl [2018-07-25 13:24:05,689 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl' [2018-07-25 13:24:05,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:24:05,738 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:24:05,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:24:05,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:24:05,739 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:24:05,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/1) ... [2018-07-25 13:24:05,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/1) ... [2018-07-25 13:24:05,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:24:05,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:24:05,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:24:05,782 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:24:05,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/1) ... [2018-07-25 13:24:05,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/1) ... [2018-07-25 13:24:05,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/1) ... [2018-07-25 13:24:05,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/1) ... [2018-07-25 13:24:05,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/1) ... [2018-07-25 13:24:05,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/1) ... [2018-07-25 13:24:05,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/1) ... [2018-07-25 13:24:05,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:24:05,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:24:05,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:24:05,802 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:24:05,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/1) ... [2018-07-25 13:24:05,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:24:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:24:06,030 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:24:06,031 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:24:06 BoogieIcfgContainer [2018-07-25 13:24:06,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:24:06,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:24:06,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:24:06,036 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:24:06,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:05" (1/2) ... [2018-07-25 13:24:06,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6a67f9 and model type count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:24:06, skipping insertion in model container [2018-07-25 13:24:06,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:24:06" (2/2) ... [2018-07-25 13:24:06,040 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bpl [2018-07-25 13:24:06,050 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:24:06,059 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:24:06,107 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:24:06,107 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:24:06,108 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:24:06,108 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:24:06,108 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:24:06,108 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:24:06,109 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:24:06,109 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:24:06,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:24:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 13:24:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:24:06,129 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:06,130 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:24:06,131 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 13:24:06,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:06,205 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 13:24:06,207 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:24:06,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 13:24:06,212 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 13:24:06,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 13:24:06,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:24:06,226 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 13:24:06,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:06,259 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 13:24:06,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 13:24:06,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 13:24:06,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:06,271 INFO L225 Difference]: With dead ends: 10 [2018-07-25 13:24:06,271 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 13:24:06,275 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 13:24:06,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 13:24:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 13:24:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 13:24:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 13:24:06,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 13:24:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:06,311 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 13:24:06,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 13:24:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 13:24:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:24:06,313 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:06,313 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 13:24:06,313 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:06,314 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-25 13:24:06,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:06,356 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:06,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:24:06,358 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:24:06,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:24:06,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:24:06,359 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-25 13:24:06,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:06,381 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 13:24:06,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:24:06,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 13:24:06,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:06,382 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:24:06,382 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 13:24:06,384 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:24:06,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 13:24:06,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 13:24:06,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:24:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 13:24:06,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 13:24:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:06,388 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 13:24:06,388 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:24:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 13:24:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:24:06,389 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:06,389 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 13:24:06,389 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:06,390 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-25 13:24:06,390 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:06,442 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:06,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:24:06,442 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:24:06,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:24:06,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:24:06,443 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-07-25 13:24:06,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:06,462 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 13:24:06,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:24:06,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 13:24:06,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:06,464 INFO L225 Difference]: With dead ends: 13 [2018-07-25 13:24:06,464 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 13:24:06,465 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:24:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 13:24:06,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 13:24:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 13:24:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 13:24:06,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 13:24:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:06,469 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 13:24:06,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:24:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 13:24:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:24:06,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:06,470 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 13:24:06,471 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-07-25 13:24:06,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:06,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:06,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:24:06,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:24:06,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:24:06,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:24:06,517 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-07-25 13:24:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:06,543 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 13:24:06,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:24:06,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 13:24:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:06,546 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:24:06,546 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 13:24:06,547 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:24:06,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 13:24:06,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 13:24:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 13:24:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 13:24:06,557 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 13:24:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:06,558 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 13:24:06,558 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:24:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 13:24:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 13:24:06,559 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:06,559 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 13:24:06,560 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:06,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-07-25 13:24:06,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:06,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:06,668 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:24:06,668 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:24:06,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:24:06,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:24:06,669 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-07-25 13:24:06,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:06,689 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 13:24:06,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:24:06,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 13:24:06,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:06,691 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:24:06,691 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 13:24:06,691 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:24:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 13:24:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 13:24:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 13:24:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 13:24:06,696 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 13:24:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:06,697 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 13:24:06,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:24:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 13:24:06,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:24:06,698 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:06,698 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 13:24:06,698 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:06,699 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-07-25 13:24:06,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:06,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:06,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:24:06,757 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:24:06,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:24:06,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:24:06,758 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-07-25 13:24:06,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:06,810 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 13:24:06,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:24:06,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 13:24:06,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:06,811 INFO L225 Difference]: With dead ends: 19 [2018-07-25 13:24:06,811 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 13:24:06,813 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:24:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 13:24:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 13:24:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 13:24:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 13:24:06,825 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-25 13:24:06,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:06,825 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 13:24:06,825 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:24:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 13:24:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 13:24:06,826 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:06,826 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-25 13:24:06,827 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:06,827 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-07-25 13:24:06,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:06,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:06,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:24:06,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:24:06,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:24:06,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:24:06,905 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-07-25 13:24:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:06,925 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 13:24:06,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:24:06,926 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 13:24:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:06,927 INFO L225 Difference]: With dead ends: 21 [2018-07-25 13:24:06,927 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 13:24:06,927 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:24:06,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 13:24:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 13:24:06,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 13:24:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 13:24:06,932 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-25 13:24:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:06,933 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 13:24:06,933 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:24:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 13:24:06,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:24:06,934 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:06,934 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-25 13:24:06,934 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:06,935 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-07-25 13:24:06,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:06,986 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:06,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:24:06,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:24:06,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:24:06,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:24:06,988 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-07-25 13:24:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:07,011 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 13:24:07,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:24:07,011 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 13:24:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:07,012 INFO L225 Difference]: With dead ends: 23 [2018-07-25 13:24:07,012 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 13:24:07,013 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:24:07,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 13:24:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 13:24:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 13:24:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 13:24:07,019 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-25 13:24:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:07,019 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 13:24:07,020 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:24:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 13:24:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 13:24:07,021 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:07,021 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-25 13:24:07,021 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:07,025 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-07-25 13:24:07,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:07,110 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:07,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:24:07,113 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:24:07,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:24:07,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:24:07,115 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-07-25 13:24:07,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:07,163 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 13:24:07,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:24:07,163 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 13:24:07,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:07,165 INFO L225 Difference]: With dead ends: 25 [2018-07-25 13:24:07,165 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 13:24:07,165 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:24:07,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 13:24:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 13:24:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 13:24:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 13:24:07,171 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-25 13:24:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:07,172 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 13:24:07,172 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:24:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 13:24:07,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:24:07,173 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:07,174 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-25 13:24:07,174 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:07,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-07-25 13:24:07,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:07,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:07,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:24:07,242 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:24:07,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:24:07,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:24:07,243 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-07-25 13:24:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:07,270 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 13:24:07,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:24:07,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 13:24:07,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:07,271 INFO L225 Difference]: With dead ends: 27 [2018-07-25 13:24:07,271 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 13:24:07,272 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:24:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 13:24:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 13:24:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 13:24:07,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 13:24:07,278 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-25 13:24:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:07,278 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 13:24:07,278 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:24:07,278 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 13:24:07,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 13:24:07,282 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:07,282 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-25 13:24:07,282 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:07,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-07-25 13:24:07,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:07,372 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:07,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:24:07,372 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:24:07,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:24:07,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:24:07,373 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-07-25 13:24:07,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:07,401 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 13:24:07,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:24:07,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-25 13:24:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:07,406 INFO L225 Difference]: With dead ends: 29 [2018-07-25 13:24:07,406 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 13:24:07,407 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:24:07,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 13:24:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 13:24:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 13:24:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 13:24:07,419 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-25 13:24:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:07,420 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 13:24:07,420 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:24:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 13:24:07,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:24:07,423 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:07,423 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-25 13:24:07,424 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:07,424 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-07-25 13:24:07,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:07,524 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:07,524 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:24:07,525 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:24:07,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:24:07,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:24:07,528 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-07-25 13:24:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:07,562 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 13:24:07,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:24:07,565 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 13:24:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:07,567 INFO L225 Difference]: With dead ends: 31 [2018-07-25 13:24:07,567 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 13:24:07,567 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:24:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 13:24:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 13:24:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 13:24:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 13:24:07,580 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-25 13:24:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:07,581 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 13:24:07,581 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:24:07,581 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 13:24:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 13:24:07,582 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:07,582 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-25 13:24:07,583 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:07,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-07-25 13:24:07,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:07,656 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:07,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 13:24:07,657 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 13:24:07,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 13:24:07,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:24:07,658 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-07-25 13:24:07,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:07,678 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 13:24:07,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:24:07,678 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-25 13:24:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:07,679 INFO L225 Difference]: With dead ends: 33 [2018-07-25 13:24:07,679 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 13:24:07,680 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:24:07,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 13:24:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 13:24:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 13:24:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 13:24:07,685 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-25 13:24:07,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:07,686 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 13:24:07,686 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 13:24:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 13:24:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 13:24:07,688 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:07,688 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-25 13:24:07,688 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:07,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-07-25 13:24:07,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:07,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:07,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:24:07,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:24:07,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:24:07,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:24:07,765 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-07-25 13:24:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:07,787 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 13:24:07,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:24:07,787 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 13:24:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:07,789 INFO L225 Difference]: With dead ends: 35 [2018-07-25 13:24:07,789 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 13:24:07,792 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:24:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 13:24:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 13:24:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 13:24:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 13:24:07,801 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-25 13:24:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:07,802 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 13:24:07,802 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:24:07,802 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 13:24:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 13:24:07,803 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:07,803 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-25 13:24:07,804 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:07,806 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-07-25 13:24:07,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:07,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:07,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:24:07,878 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:24:07,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:24:07,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:24:07,879 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-07-25 13:24:07,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:07,900 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 13:24:07,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:24:07,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-25 13:24:07,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:07,902 INFO L225 Difference]: With dead ends: 37 [2018-07-25 13:24:07,903 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 13:24:07,905 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:24:07,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 13:24:07,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 13:24:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 13:24:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 13:24:07,912 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-25 13:24:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:07,913 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 13:24:07,913 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:24:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 13:24:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 13:24:07,919 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:07,920 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-25 13:24:07,920 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:07,922 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-07-25 13:24:07,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:07,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:07,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:24:07,995 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:24:07,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:24:07,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:24:07,996 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-07-25 13:24:08,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:08,018 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 13:24:08,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:24:08,018 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 13:24:08,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:08,019 INFO L225 Difference]: With dead ends: 39 [2018-07-25 13:24:08,019 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 13:24:08,020 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:24:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 13:24:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 13:24:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 13:24:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 13:24:08,025 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-25 13:24:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:08,026 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 13:24:08,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:24:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 13:24:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 13:24:08,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:08,027 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-25 13:24:08,027 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:08,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-07-25 13:24:08,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:08,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:08,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 13:24:08,103 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:24:08,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:24:08,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:24:08,104 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-07-25 13:24:08,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:08,122 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 13:24:08,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:24:08,123 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-25 13:24:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:08,124 INFO L225 Difference]: With dead ends: 41 [2018-07-25 13:24:08,124 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 13:24:08,124 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:24:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 13:24:08,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 13:24:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 13:24:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 13:24:08,130 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-25 13:24:08,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:08,130 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 13:24:08,130 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:24:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 13:24:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 13:24:08,131 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:08,132 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-25 13:24:08,132 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:08,132 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-07-25 13:24:08,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:08,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:08,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:24:08,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:24:08,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:24:08,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:24:08,221 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-07-25 13:24:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:08,244 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 13:24:08,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:24:08,244 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 13:24:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:08,245 INFO L225 Difference]: With dead ends: 43 [2018-07-25 13:24:08,245 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 13:24:08,246 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:24:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 13:24:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 13:24:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 13:24:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 13:24:08,255 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-25 13:24:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:08,255 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 13:24:08,256 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:24:08,256 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 13:24:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 13:24:08,257 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:08,257 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-25 13:24:08,257 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:08,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-07-25 13:24:08,258 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:08,365 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:08,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:24:08,365 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:24:08,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:24:08,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:24:08,366 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-07-25 13:24:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:08,410 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 13:24:08,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:24:08,413 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-25 13:24:08,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:08,414 INFO L225 Difference]: With dead ends: 45 [2018-07-25 13:24:08,414 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 13:24:08,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:24:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 13:24:08,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 13:24:08,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 13:24:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 13:24:08,423 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-25 13:24:08,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:08,424 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 13:24:08,424 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:24:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 13:24:08,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 13:24:08,427 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:08,427 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-25 13:24:08,428 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:08,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-07-25 13:24:08,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:08,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:08,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:24:08,531 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:24:08,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:24:08,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:24:08,532 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-07-25 13:24:08,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:08,561 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 13:24:08,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:24:08,561 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 13:24:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:08,562 INFO L225 Difference]: With dead ends: 47 [2018-07-25 13:24:08,562 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 13:24:08,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:24:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 13:24:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 13:24:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 13:24:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 13:24:08,575 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-25 13:24:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:08,576 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 13:24:08,576 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:24:08,576 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 13:24:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 13:24:08,579 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:08,579 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-25 13:24:08,579 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-07-25 13:24:08,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:08,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:08,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 13:24:08,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 13:24:08,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 13:24:08,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:24:08,706 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-07-25 13:24:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:08,729 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 13:24:08,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:24:08,729 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-25 13:24:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:08,730 INFO L225 Difference]: With dead ends: 49 [2018-07-25 13:24:08,730 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 13:24:08,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:24:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 13:24:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 13:24:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 13:24:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 13:24:08,738 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-25 13:24:08,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:08,739 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 13:24:08,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 13:24:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 13:24:08,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 13:24:08,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:08,740 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-25 13:24:08,740 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-07-25 13:24:08,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:08,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:08,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:24:08,863 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:24:08,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:24:08,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:24:08,864 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-07-25 13:24:08,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:08,887 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 13:24:08,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:24:08,888 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 13:24:08,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:08,888 INFO L225 Difference]: With dead ends: 51 [2018-07-25 13:24:08,889 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 13:24:08,889 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:24:08,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 13:24:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 13:24:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 13:24:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 13:24:08,899 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-25 13:24:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:08,899 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 13:24:08,899 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:24:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 13:24:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 13:24:08,900 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:08,900 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-25 13:24:08,901 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:08,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-07-25 13:24:08,901 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:09,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:09,032 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:24:09,032 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:24:09,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:24:09,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:24:09,033 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-07-25 13:24:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:09,064 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 13:24:09,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 13:24:09,065 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-25 13:24:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:09,066 INFO L225 Difference]: With dead ends: 53 [2018-07-25 13:24:09,066 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 13:24:09,067 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:24:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 13:24:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 13:24:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 13:24:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 13:24:09,080 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-25 13:24:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:09,080 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 13:24:09,081 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:24:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 13:24:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 13:24:09,081 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:09,082 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-25 13:24:09,082 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:09,082 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-07-25 13:24:09,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:09,201 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:09,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:24:09,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:24:09,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:24:09,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:24:09,203 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-07-25 13:24:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:09,230 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 13:24:09,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:24:09,230 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 13:24:09,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:09,231 INFO L225 Difference]: With dead ends: 55 [2018-07-25 13:24:09,231 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 13:24:09,232 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:24:09,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 13:24:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 13:24:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 13:24:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 13:24:09,237 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-25 13:24:09,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:09,237 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 13:24:09,237 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:24:09,237 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 13:24:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 13:24:09,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:09,238 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-25 13:24:09,238 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:09,239 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-07-25 13:24:09,239 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:09,380 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:09,380 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 13:24:09,380 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 13:24:09,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 13:24:09,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:24:09,382 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-07-25 13:24:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:09,410 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 13:24:09,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 13:24:09,411 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-25 13:24:09,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:09,412 INFO L225 Difference]: With dead ends: 57 [2018-07-25 13:24:09,412 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 13:24:09,413 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:24:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 13:24:09,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 13:24:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 13:24:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 13:24:09,423 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-25 13:24:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:09,423 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 13:24:09,427 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 13:24:09,427 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 13:24:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 13:24:09,428 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:09,428 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-25 13:24:09,429 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-07-25 13:24:09,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:09,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:09,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:24:09,580 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:24:09,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:24:09,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:24:09,581 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-07-25 13:24:09,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:09,608 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 13:24:09,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:24:09,608 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 13:24:09,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:09,609 INFO L225 Difference]: With dead ends: 59 [2018-07-25 13:24:09,609 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 13:24:09,610 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:24:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 13:24:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 13:24:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 13:24:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 13:24:09,616 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-25 13:24:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:09,616 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 13:24:09,616 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:24:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 13:24:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 13:24:09,617 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:09,617 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-25 13:24:09,617 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:09,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-07-25 13:24:09,618 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:09,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:09,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:24:09,771 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:24:09,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:24:09,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:24:09,773 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-07-25 13:24:09,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:09,812 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 13:24:09,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:24:09,812 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-25 13:24:09,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:09,813 INFO L225 Difference]: With dead ends: 61 [2018-07-25 13:24:09,813 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 13:24:09,814 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:24:09,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 13:24:09,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 13:24:09,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 13:24:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 13:24:09,818 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-25 13:24:09,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:09,818 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 13:24:09,818 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:24:09,818 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 13:24:09,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 13:24:09,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:09,819 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-25 13:24:09,819 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:09,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-07-25 13:24:09,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:10,049 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:10,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:24:10,050 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:24:10,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:24:10,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:24:10,051 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-07-25 13:24:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:10,076 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 13:24:10,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:24:10,077 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 13:24:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:10,078 INFO L225 Difference]: With dead ends: 63 [2018-07-25 13:24:10,078 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 13:24:10,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:24:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 13:24:10,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 13:24:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 13:24:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 13:24:10,081 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-25 13:24:10,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:10,082 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 13:24:10,082 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:24:10,082 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 13:24:10,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 13:24:10,082 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:10,083 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-25 13:24:10,083 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:10,083 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-07-25 13:24:10,083 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:10,227 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:10,227 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 13:24:10,227 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 13:24:10,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 13:24:10,228 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:24:10,228 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-07-25 13:24:10,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:10,249 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 13:24:10,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 13:24:10,249 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-25 13:24:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:10,250 INFO L225 Difference]: With dead ends: 65 [2018-07-25 13:24:10,250 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 13:24:10,251 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:24:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 13:24:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 13:24:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 13:24:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 13:24:10,254 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-25 13:24:10,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:10,255 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 13:24:10,255 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 13:24:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 13:24:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 13:24:10,255 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:10,256 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-25 13:24:10,256 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:10,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-07-25 13:24:10,256 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:10,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:10,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:24:10,406 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:24:10,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:24:10,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:24:10,407 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-07-25 13:24:10,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:10,434 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 13:24:10,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 13:24:10,434 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 13:24:10,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:10,435 INFO L225 Difference]: With dead ends: 67 [2018-07-25 13:24:10,435 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 13:24:10,436 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:24:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 13:24:10,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 13:24:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 13:24:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 13:24:10,439 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-25 13:24:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:10,440 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 13:24:10,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:24:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 13:24:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 13:24:10,440 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:10,441 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-25 13:24:10,441 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:10,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-07-25 13:24:10,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:10,596 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:10,596 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:24:10,596 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:24:10,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:24:10,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:24:10,597 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-07-25 13:24:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:10,620 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 13:24:10,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:24:10,620 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-25 13:24:10,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:10,621 INFO L225 Difference]: With dead ends: 69 [2018-07-25 13:24:10,621 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 13:24:10,622 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:24:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 13:24:10,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 13:24:10,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 13:24:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 13:24:10,625 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-25 13:24:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:10,626 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 13:24:10,626 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:24:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 13:24:10,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 13:24:10,626 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:10,626 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-25 13:24:10,627 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:10,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-07-25 13:24:10,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:10,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:10,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:24:10,815 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:24:10,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:24:10,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:24:10,816 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-07-25 13:24:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:10,853 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 13:24:10,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 13:24:10,853 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 13:24:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:10,854 INFO L225 Difference]: With dead ends: 71 [2018-07-25 13:24:10,854 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 13:24:10,855 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:24:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 13:24:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 13:24:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 13:24:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 13:24:10,858 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-25 13:24:10,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:10,858 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 13:24:10,858 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:24:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 13:24:10,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 13:24:10,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:10,859 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-25 13:24:10,859 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:10,860 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-07-25 13:24:10,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:11,043 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:11,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 13:24:11,044 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 13:24:11,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 13:24:11,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:24:11,045 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-07-25 13:24:11,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:11,074 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 13:24:11,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 13:24:11,074 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-25 13:24:11,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:11,075 INFO L225 Difference]: With dead ends: 73 [2018-07-25 13:24:11,075 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 13:24:11,076 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:24:11,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 13:24:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 13:24:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 13:24:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 13:24:11,079 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-25 13:24:11,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:11,080 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 13:24:11,080 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 13:24:11,080 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 13:24:11,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 13:24:11,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:11,081 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-25 13:24:11,081 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:11,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-07-25 13:24:11,081 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:11,248 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:11,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:24:11,248 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:24:11,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:24:11,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:24:11,250 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-07-25 13:24:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:11,272 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 13:24:11,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 13:24:11,272 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 13:24:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:11,273 INFO L225 Difference]: With dead ends: 75 [2018-07-25 13:24:11,273 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 13:24:11,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:24:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 13:24:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 13:24:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 13:24:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 13:24:11,277 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-25 13:24:11,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:11,277 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 13:24:11,278 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:24:11,278 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 13:24:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 13:24:11,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:11,280 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-25 13:24:11,280 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:11,280 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-07-25 13:24:11,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:11,470 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:11,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:24:11,470 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:24:11,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:24:11,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:24:11,472 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-07-25 13:24:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:11,496 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 13:24:11,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 13:24:11,497 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-25 13:24:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:11,498 INFO L225 Difference]: With dead ends: 77 [2018-07-25 13:24:11,498 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 13:24:11,499 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:24:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 13:24:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 13:24:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 13:24:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 13:24:11,502 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-25 13:24:11,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:11,502 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 13:24:11,502 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:24:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 13:24:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 13:24:11,503 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:11,503 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-25 13:24:11,504 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-07-25 13:24:11,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:11,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:11,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:24:11,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:24:11,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:24:11,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:24:11,680 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-07-25 13:24:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:11,713 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 13:24:11,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 13:24:11,714 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 13:24:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:11,714 INFO L225 Difference]: With dead ends: 79 [2018-07-25 13:24:11,714 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 13:24:11,715 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:24:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 13:24:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 13:24:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 13:24:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 13:24:11,719 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-25 13:24:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:11,719 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 13:24:11,719 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:24:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 13:24:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 13:24:11,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:11,720 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-25 13:24:11,720 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:11,721 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-07-25 13:24:11,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:11,899 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:11,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 13:24:11,900 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 13:24:11,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 13:24:11,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:24:11,901 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-07-25 13:24:11,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:11,926 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 13:24:11,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 13:24:11,927 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-25 13:24:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:11,927 INFO L225 Difference]: With dead ends: 81 [2018-07-25 13:24:11,928 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 13:24:11,929 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:24:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 13:24:11,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 13:24:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 13:24:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 13:24:11,932 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-25 13:24:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:11,932 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 13:24:11,932 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 13:24:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 13:24:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 13:24:11,933 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:11,933 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-25 13:24:11,934 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:11,934 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-07-25 13:24:11,934 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:12,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:12,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:24:12,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:24:12,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:24:12,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:24:12,134 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-07-25 13:24:12,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:12,172 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 13:24:12,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 13:24:12,173 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 13:24:12,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:12,174 INFO L225 Difference]: With dead ends: 83 [2018-07-25 13:24:12,174 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 13:24:12,175 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:24:12,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 13:24:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 13:24:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 13:24:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 13:24:12,180 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-25 13:24:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:12,181 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 13:24:12,181 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:24:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 13:24:12,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 13:24:12,182 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:12,182 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-25 13:24:12,182 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:12,182 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-07-25 13:24:12,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:12,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:12,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:24:12,414 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:24:12,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:24:12,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:24:12,416 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-07-25 13:24:12,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:12,451 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 13:24:12,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 13:24:12,452 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-25 13:24:12,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:12,454 INFO L225 Difference]: With dead ends: 85 [2018-07-25 13:24:12,454 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 13:24:12,456 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:24:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 13:24:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 13:24:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 13:24:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 13:24:12,460 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-25 13:24:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:12,460 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 13:24:12,460 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:24:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 13:24:12,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 13:24:12,462 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:12,462 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-25 13:24:12,462 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:12,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-07-25 13:24:12,462 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:12,700 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:12,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:24:12,700 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:24:12,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:24:12,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:24:12,702 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-07-25 13:24:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:12,730 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 13:24:12,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 13:24:12,730 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 13:24:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:12,731 INFO L225 Difference]: With dead ends: 87 [2018-07-25 13:24:12,731 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 13:24:12,732 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:24:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 13:24:12,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 13:24:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 13:24:12,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 13:24:12,736 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-25 13:24:12,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:12,737 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 13:24:12,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:24:12,737 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 13:24:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 13:24:12,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:12,738 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-25 13:24:12,738 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:12,738 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-07-25 13:24:12,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:12,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:12,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 13:24:12,918 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 13:24:12,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 13:24:12,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:24:12,919 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-07-25 13:24:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:12,952 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 13:24:12,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 13:24:12,952 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-25 13:24:12,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:12,953 INFO L225 Difference]: With dead ends: 89 [2018-07-25 13:24:12,953 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 13:24:12,954 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:24:12,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 13:24:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 13:24:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 13:24:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 13:24:12,960 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-25 13:24:12,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:12,960 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 13:24:12,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 13:24:12,960 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 13:24:12,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 13:24:12,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:12,961 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-25 13:24:12,962 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:12,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-07-25 13:24:12,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:13,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:13,141 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:24:13,141 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:24:13,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:24:13,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:24:13,143 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-07-25 13:24:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:13,181 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 13:24:13,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 13:24:13,181 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 13:24:13,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:13,182 INFO L225 Difference]: With dead ends: 91 [2018-07-25 13:24:13,182 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 13:24:13,183 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:24:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 13:24:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 13:24:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 13:24:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 13:24:13,191 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-25 13:24:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:13,191 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 13:24:13,191 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:24:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 13:24:13,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 13:24:13,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:13,192 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-25 13:24:13,193 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:13,193 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-07-25 13:24:13,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:13,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:13,380 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:24:13,380 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:24:13,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:24:13,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:24:13,383 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-07-25 13:24:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:13,430 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 13:24:13,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 13:24:13,430 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-25 13:24:13,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:13,431 INFO L225 Difference]: With dead ends: 93 [2018-07-25 13:24:13,431 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 13:24:13,435 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:24:13,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 13:24:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 13:24:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 13:24:13,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 13:24:13,440 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-25 13:24:13,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:13,441 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 13:24:13,441 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:24:13,441 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 13:24:13,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 13:24:13,442 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:13,442 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-25 13:24:13,442 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:13,443 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-07-25 13:24:13,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:13,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:13,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:24:13,649 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:24:13,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:24:13,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:24:13,651 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-07-25 13:24:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:13,686 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 13:24:13,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 13:24:13,686 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 13:24:13,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:13,687 INFO L225 Difference]: With dead ends: 95 [2018-07-25 13:24:13,687 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 13:24:13,688 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:24:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 13:24:13,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 13:24:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 13:24:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 13:24:13,694 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-25 13:24:13,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:13,694 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 13:24:13,694 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:24:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 13:24:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 13:24:13,695 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:13,696 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-25 13:24:13,696 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:13,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-07-25 13:24:13,696 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:13,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:13,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 13:24:13,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 13:24:13,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 13:24:13,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:24:13,924 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-07-25 13:24:13,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:13,972 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 13:24:13,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 13:24:13,972 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-25 13:24:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:13,973 INFO L225 Difference]: With dead ends: 97 [2018-07-25 13:24:13,973 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 13:24:13,974 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:24:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 13:24:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 13:24:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 13:24:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 13:24:13,978 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-25 13:24:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:13,978 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 13:24:13,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 13:24:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 13:24:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 13:24:13,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:13,980 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-25 13:24:13,980 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:13,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-07-25 13:24:13,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:14,207 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:14,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:24:14,208 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:24:14,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:24:14,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:24:14,209 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-07-25 13:24:14,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:14,258 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 13:24:14,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 13:24:14,258 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 13:24:14,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:14,259 INFO L225 Difference]: With dead ends: 99 [2018-07-25 13:24:14,259 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 13:24:14,260 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:24:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 13:24:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 13:24:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 13:24:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 13:24:14,265 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-25 13:24:14,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:14,265 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 13:24:14,265 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:24:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 13:24:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 13:24:14,266 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:14,267 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-25 13:24:14,267 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:14,267 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-07-25 13:24:14,267 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:14,506 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:14,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:24:14,507 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:24:14,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:24:14,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:24:14,508 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-07-25 13:24:14,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:14,555 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 13:24:14,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 13:24:14,556 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-25 13:24:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:14,557 INFO L225 Difference]: With dead ends: 101 [2018-07-25 13:24:14,557 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 13:24:14,558 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:24:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 13:24:14,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 13:24:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 13:24:14,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 13:24:14,563 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-25 13:24:14,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:14,564 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 13:24:14,564 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:24:14,564 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 13:24:14,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 13:24:14,565 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:14,565 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-25 13:24:14,565 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:14,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-07-25 13:24:14,566 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:14,847 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:14,847 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:24:14,848 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:24:14,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:24:14,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:24:14,849 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-07-25 13:24:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:14,899 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 13:24:14,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 13:24:14,900 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 13:24:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:14,901 INFO L225 Difference]: With dead ends: 103 [2018-07-25 13:24:14,901 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 13:24:14,902 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:24:14,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 13:24:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 13:24:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 13:24:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 13:24:14,908 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-25 13:24:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:14,908 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 13:24:14,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:24:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 13:24:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 13:24:14,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:14,909 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-25 13:24:14,910 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:14,910 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-07-25 13:24:14,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:15,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:15,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 13:24:15,178 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 13:24:15,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 13:24:15,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:24:15,180 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-07-25 13:24:15,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:15,227 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 13:24:15,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 13:24:15,227 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-25 13:24:15,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:15,228 INFO L225 Difference]: With dead ends: 105 [2018-07-25 13:24:15,228 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 13:24:15,229 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:24:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 13:24:15,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 13:24:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 13:24:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 13:24:15,233 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-25 13:24:15,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:15,234 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 13:24:15,234 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 13:24:15,234 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 13:24:15,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 13:24:15,235 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:15,235 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-25 13:24:15,235 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:15,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-07-25 13:24:15,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:15,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:15,451 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:24:15,451 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:24:15,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:24:15,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:24:15,453 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-07-25 13:24:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:15,497 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 13:24:15,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 13:24:15,498 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 13:24:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:15,498 INFO L225 Difference]: With dead ends: 107 [2018-07-25 13:24:15,499 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 13:24:15,499 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:24:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 13:24:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 13:24:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 13:24:15,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 13:24:15,503 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-25 13:24:15,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:15,504 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 13:24:15,504 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:24:15,504 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 13:24:15,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 13:24:15,505 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:15,505 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-25 13:24:15,505 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:15,505 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-07-25 13:24:15,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:15,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:15,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:24:15,735 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:24:15,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:24:15,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:24:15,737 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-07-25 13:24:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:15,781 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 13:24:15,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 13:24:15,781 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-25 13:24:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:15,782 INFO L225 Difference]: With dead ends: 109 [2018-07-25 13:24:15,782 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 13:24:15,783 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:24:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 13:24:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 13:24:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 13:24:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 13:24:15,792 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-25 13:24:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:15,793 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 13:24:15,793 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:24:15,793 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 13:24:15,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 13:24:15,794 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:15,794 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-25 13:24:15,794 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:15,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-07-25 13:24:15,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:16,035 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:16,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:24:16,036 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:24:16,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:24:16,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:24:16,037 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-07-25 13:24:16,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:16,077 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 13:24:16,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 13:24:16,078 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 13:24:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:16,079 INFO L225 Difference]: With dead ends: 111 [2018-07-25 13:24:16,079 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 13:24:16,080 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:24:16,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 13:24:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 13:24:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 13:24:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 13:24:16,084 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-25 13:24:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:16,085 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 13:24:16,085 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:24:16,085 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 13:24:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 13:24:16,086 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:16,086 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-25 13:24:16,086 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:16,087 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-07-25 13:24:16,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:16,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:16,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 13:24:16,322 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 13:24:16,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 13:24:16,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:24:16,324 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-07-25 13:24:16,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:16,383 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 13:24:16,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 13:24:16,383 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-25 13:24:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:16,384 INFO L225 Difference]: With dead ends: 113 [2018-07-25 13:24:16,384 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 13:24:16,385 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:24:16,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 13:24:16,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 13:24:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 13:24:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 13:24:16,389 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-25 13:24:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:16,390 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 13:24:16,390 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 13:24:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 13:24:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 13:24:16,391 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:16,391 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-25 13:24:16,391 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:16,391 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-07-25 13:24:16,392 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:16,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:16,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:24:16,626 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:24:16,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:24:16,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:24:16,627 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-07-25 13:24:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:16,683 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 13:24:16,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 13:24:16,684 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 13:24:16,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:16,685 INFO L225 Difference]: With dead ends: 115 [2018-07-25 13:24:16,685 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 13:24:16,686 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:24:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 13:24:16,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 13:24:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 13:24:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 13:24:16,690 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-25 13:24:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:16,690 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 13:24:16,690 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:24:16,691 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 13:24:16,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 13:24:16,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:16,692 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-25 13:24:16,692 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:16,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-07-25 13:24:16,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:16,945 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:16,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:24:16,945 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:24:16,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:24:16,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:24:16,947 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-07-25 13:24:17,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:17,016 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 13:24:17,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 13:24:17,016 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-25 13:24:17,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:17,017 INFO L225 Difference]: With dead ends: 117 [2018-07-25 13:24:17,017 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 13:24:17,019 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:24:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 13:24:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 13:24:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 13:24:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 13:24:17,024 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-25 13:24:17,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:17,024 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 13:24:17,024 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:24:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 13:24:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 13:24:17,026 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:17,026 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-25 13:24:17,026 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:17,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-07-25 13:24:17,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:17,385 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:17,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:24:17,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:24:17,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:24:17,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:24:17,391 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-07-25 13:24:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:17,461 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 13:24:17,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 13:24:17,461 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 13:24:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:17,463 INFO L225 Difference]: With dead ends: 119 [2018-07-25 13:24:17,463 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 13:24:17,464 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:24:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 13:24:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 13:24:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 13:24:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 13:24:17,470 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-25 13:24:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:17,471 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 13:24:17,471 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:24:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 13:24:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 13:24:17,472 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:17,472 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-25 13:24:17,473 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:17,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-07-25 13:24:17,473 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:17,820 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:17,820 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 13:24:17,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 13:24:17,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 13:24:17,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:24:17,822 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-07-25 13:24:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:17,871 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 13:24:17,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 13:24:17,871 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-25 13:24:17,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:17,872 INFO L225 Difference]: With dead ends: 121 [2018-07-25 13:24:17,872 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 13:24:17,873 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:24:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 13:24:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 13:24:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 13:24:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 13:24:17,877 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-25 13:24:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:17,878 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 13:24:17,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 13:24:17,878 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 13:24:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 13:24:17,879 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:17,879 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-25 13:24:17,879 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:17,880 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-07-25 13:24:17,880 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:18,150 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:18,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:24:18,151 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:24:18,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:24:18,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:24:18,152 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-07-25 13:24:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:18,212 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 13:24:18,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 13:24:18,212 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 13:24:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:18,213 INFO L225 Difference]: With dead ends: 123 [2018-07-25 13:24:18,213 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 13:24:18,214 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:24:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 13:24:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 13:24:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 13:24:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 13:24:18,219 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-25 13:24:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:18,219 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 13:24:18,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:24:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 13:24:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 13:24:18,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:18,221 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-25 13:24:18,221 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:18,221 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-07-25 13:24:18,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:18,490 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:18,490 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:24:18,490 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:24:18,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:24:18,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:24:18,492 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-07-25 13:24:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:18,564 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 13:24:18,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 13:24:18,565 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-25 13:24:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:18,566 INFO L225 Difference]: With dead ends: 125 [2018-07-25 13:24:18,566 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 13:24:18,567 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:24:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 13:24:18,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 13:24:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 13:24:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 13:24:18,572 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-25 13:24:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:18,572 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 13:24:18,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:24:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 13:24:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 13:24:18,573 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:18,574 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-25 13:24:18,574 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:18,574 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-07-25 13:24:18,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:18,846 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:18,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:24:18,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:24:18,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:24:18,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:24:18,848 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-07-25 13:24:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:18,908 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 13:24:18,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:24:18,909 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 13:24:18,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:18,910 INFO L225 Difference]: With dead ends: 127 [2018-07-25 13:24:18,910 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 13:24:18,911 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:24:18,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 13:24:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 13:24:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 13:24:18,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 13:24:18,915 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-25 13:24:18,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:18,916 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 13:24:18,916 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:24:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 13:24:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 13:24:18,917 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:18,917 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-25 13:24:18,918 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:18,918 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-07-25 13:24:18,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:19,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:19,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 13:24:19,191 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 13:24:19,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 13:24:19,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:24:19,193 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-07-25 13:24:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:19,255 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 13:24:19,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 13:24:19,255 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-25 13:24:19,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:19,256 INFO L225 Difference]: With dead ends: 129 [2018-07-25 13:24:19,256 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 13:24:19,257 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:24:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 13:24:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 13:24:19,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 13:24:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 13:24:19,262 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-25 13:24:19,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:19,263 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 13:24:19,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 13:24:19,263 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 13:24:19,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 13:24:19,264 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:19,265 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-25 13:24:19,265 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:19,265 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-07-25 13:24:19,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:19,563 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:19,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:24:19,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:24:19,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:24:19,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:24:19,565 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-07-25 13:24:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:19,654 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 13:24:19,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 13:24:19,654 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 13:24:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:19,656 INFO L225 Difference]: With dead ends: 131 [2018-07-25 13:24:19,656 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 13:24:19,657 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:24:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 13:24:19,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 13:24:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 13:24:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 13:24:19,662 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-25 13:24:19,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:19,664 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 13:24:19,664 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:24:19,664 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 13:24:19,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 13:24:19,665 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:19,666 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-25 13:24:19,666 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:19,666 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-07-25 13:24:19,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:19,963 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:19,963 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:24:19,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:24:19,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:24:19,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:24:19,966 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-07-25 13:24:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:20,074 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 13:24:20,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 13:24:20,075 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-25 13:24:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:20,076 INFO L225 Difference]: With dead ends: 133 [2018-07-25 13:24:20,076 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 13:24:20,077 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:24:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 13:24:20,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 13:24:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 13:24:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 13:24:20,082 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-25 13:24:20,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:20,082 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 13:24:20,082 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:24:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 13:24:20,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 13:24:20,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:20,084 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-25 13:24:20,084 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:20,084 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-07-25 13:24:20,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:20,349 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:20,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:24:20,350 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:24:20,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:24:20,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:24:20,352 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-07-25 13:24:20,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:20,406 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 13:24:20,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 13:24:20,406 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 13:24:20,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:20,407 INFO L225 Difference]: With dead ends: 135 [2018-07-25 13:24:20,408 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 13:24:20,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:24:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 13:24:20,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 13:24:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 13:24:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 13:24:20,414 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-25 13:24:20,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:20,415 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 13:24:20,415 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:24:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 13:24:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 13:24:20,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:20,417 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-25 13:24:20,417 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:20,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-07-25 13:24:20,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:20,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:20,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 13:24:20,685 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 13:24:20,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 13:24:20,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:24:20,686 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-07-25 13:24:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:20,765 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 13:24:20,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 13:24:20,766 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-25 13:24:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:20,767 INFO L225 Difference]: With dead ends: 137 [2018-07-25 13:24:20,767 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 13:24:20,771 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:24:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 13:24:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 13:24:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 13:24:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 13:24:20,777 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-25 13:24:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:20,777 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 13:24:20,777 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 13:24:20,777 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 13:24:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 13:24:20,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:20,779 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-25 13:24:20,779 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:20,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-07-25 13:24:20,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:21,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:21,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:24:21,058 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:24:21,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:24:21,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:24:21,059 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-07-25 13:24:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:21,146 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 13:24:21,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 13:24:21,146 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 13:24:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:21,147 INFO L225 Difference]: With dead ends: 139 [2018-07-25 13:24:21,147 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 13:24:21,148 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:24:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 13:24:21,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 13:24:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 13:24:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 13:24:21,155 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-25 13:24:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:21,155 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 13:24:21,155 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:24:21,155 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 13:24:21,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 13:24:21,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:21,157 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-25 13:24:21,157 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:21,157 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-07-25 13:24:21,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:21,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:21,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:24:21,443 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:24:21,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:24:21,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:24:21,445 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-07-25 13:24:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:21,531 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 13:24:21,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 13:24:21,532 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-25 13:24:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:21,533 INFO L225 Difference]: With dead ends: 141 [2018-07-25 13:24:21,533 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 13:24:21,534 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:24:21,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 13:24:21,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 13:24:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 13:24:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 13:24:21,538 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-25 13:24:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:21,539 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 13:24:21,539 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:24:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 13:24:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 13:24:21,540 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:21,540 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-25 13:24:21,540 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:21,541 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-07-25 13:24:21,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:21,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:21,820 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:24:21,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:24:21,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:24:21,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:24:21,822 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-07-25 13:24:21,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:21,902 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 13:24:21,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 13:24:21,903 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 13:24:21,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:21,904 INFO L225 Difference]: With dead ends: 143 [2018-07-25 13:24:21,904 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 13:24:21,905 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:24:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 13:24:21,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 13:24:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 13:24:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 13:24:21,910 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-25 13:24:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:21,910 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 13:24:21,910 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:24:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 13:24:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 13:24:21,912 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:21,912 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-25 13:24:21,912 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:21,912 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-07-25 13:24:21,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:22,267 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:22,267 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 13:24:22,267 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 13:24:22,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 13:24:22,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:24:22,269 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-07-25 13:24:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:22,363 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 13:24:22,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 13:24:22,364 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-25 13:24:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:22,365 INFO L225 Difference]: With dead ends: 145 [2018-07-25 13:24:22,365 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 13:24:22,366 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:24:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 13:24:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 13:24:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 13:24:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 13:24:22,373 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-25 13:24:22,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:22,373 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 13:24:22,374 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 13:24:22,374 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 13:24:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 13:24:22,375 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:22,375 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-25 13:24:22,376 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:22,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-07-25 13:24:22,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:22,773 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:22,773 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:24:22,773 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:24:22,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:24:22,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:24:22,775 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-07-25 13:24:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:22,878 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 13:24:22,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 13:24:22,879 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 13:24:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:22,880 INFO L225 Difference]: With dead ends: 147 [2018-07-25 13:24:22,880 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 13:24:22,881 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:24:22,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 13:24:22,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 13:24:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 13:24:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 13:24:22,886 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-25 13:24:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:22,887 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 13:24:22,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:24:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 13:24:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 13:24:22,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:22,889 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-25 13:24:22,889 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:22,889 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-07-25 13:24:22,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:23,229 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:23,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:24:23,230 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:24:23,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:24:23,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:24:23,232 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-07-25 13:24:23,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:23,365 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 13:24:23,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 13:24:23,366 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-25 13:24:23,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:23,367 INFO L225 Difference]: With dead ends: 149 [2018-07-25 13:24:23,367 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 13:24:23,371 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:24:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 13:24:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 13:24:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 13:24:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 13:24:23,376 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-25 13:24:23,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:23,376 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 13:24:23,376 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:24:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 13:24:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 13:24:23,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:23,381 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-25 13:24:23,381 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:23,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-07-25 13:24:23,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:23,715 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:23,715 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:24:23,715 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:24:23,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:24:23,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:24:23,718 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-07-25 13:24:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:23,823 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 13:24:23,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 13:24:23,824 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 13:24:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:23,826 INFO L225 Difference]: With dead ends: 151 [2018-07-25 13:24:23,826 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 13:24:23,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:24:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 13:24:23,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 13:24:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 13:24:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 13:24:23,832 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-25 13:24:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:23,832 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 13:24:23,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:24:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 13:24:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 13:24:23,834 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:23,834 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-25 13:24:23,834 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:23,835 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-07-25 13:24:23,835 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:24,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:24,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 13:24:24,157 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 13:24:24,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 13:24:24,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:24:24,159 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-07-25 13:24:24,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:24,235 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 13:24:24,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 13:24:24,236 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-25 13:24:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:24,238 INFO L225 Difference]: With dead ends: 153 [2018-07-25 13:24:24,238 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 13:24:24,239 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:24:24,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 13:24:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 13:24:24,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 13:24:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 13:24:24,244 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-25 13:24:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:24,245 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 13:24:24,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 13:24:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 13:24:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 13:24:24,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:24,247 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-25 13:24:24,247 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:24,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-07-25 13:24:24,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:24,571 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:24,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:24:24,572 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:24:24,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:24:24,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:24:24,574 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-07-25 13:24:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:24,659 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 13:24:24,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 13:24:24,659 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 13:24:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:24,660 INFO L225 Difference]: With dead ends: 155 [2018-07-25 13:24:24,660 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 13:24:24,661 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:24:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 13:24:24,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 13:24:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 13:24:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 13:24:24,666 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-25 13:24:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:24,667 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 13:24:24,667 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:24:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 13:24:24,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 13:24:24,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:24,668 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-25 13:24:24,669 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:24,669 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-07-25 13:24:24,669 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:25,029 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:25,029 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:24:25,029 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:24:25,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:24:25,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:24:25,034 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-07-25 13:24:25,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:25,147 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 13:24:25,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 13:24:25,147 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-25 13:24:25,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:25,148 INFO L225 Difference]: With dead ends: 157 [2018-07-25 13:24:25,148 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 13:24:25,149 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:24:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 13:24:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 13:24:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 13:24:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 13:24:25,155 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-25 13:24:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:25,155 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 13:24:25,155 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:24:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 13:24:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 13:24:25,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:25,157 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-25 13:24:25,157 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:25,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-07-25 13:24:25,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:25,507 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:25,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:24:25,508 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:24:25,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:24:25,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:24:25,510 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-07-25 13:24:25,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:25,590 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 13:24:25,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 13:24:25,590 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 13:24:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:25,592 INFO L225 Difference]: With dead ends: 159 [2018-07-25 13:24:25,592 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 13:24:25,593 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:24:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 13:24:25,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 13:24:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 13:24:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 13:24:25,599 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-25 13:24:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:25,599 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 13:24:25,599 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:24:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 13:24:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 13:24:25,601 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:25,601 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-25 13:24:25,601 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:25,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-07-25 13:24:25,601 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:25,941 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:25,942 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 13:24:25,942 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 13:24:25,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 13:24:25,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:24:25,944 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-07-25 13:24:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:26,067 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 13:24:26,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 13:24:26,067 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-25 13:24:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:26,068 INFO L225 Difference]: With dead ends: 161 [2018-07-25 13:24:26,068 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 13:24:26,069 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:24:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 13:24:26,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 13:24:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 13:24:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 13:24:26,078 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-25 13:24:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:26,078 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 13:24:26,078 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 13:24:26,078 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 13:24:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 13:24:26,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:26,080 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-25 13:24:26,080 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:26,081 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-07-25 13:24:26,081 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:26,471 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:26,472 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:24:26,472 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:24:26,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:24:26,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:24:26,474 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-07-25 13:24:26,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:26,608 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 13:24:26,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 13:24:26,608 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 13:24:26,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:26,609 INFO L225 Difference]: With dead ends: 163 [2018-07-25 13:24:26,609 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 13:24:26,610 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:24:26,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 13:24:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 13:24:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 13:24:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 13:24:26,618 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-25 13:24:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:26,619 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 13:24:26,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:24:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 13:24:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 13:24:26,620 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:26,621 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-25 13:24:26,621 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-07-25 13:24:26,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:27,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:27,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:24:27,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:24:27,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:24:27,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:24:27,021 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-07-25 13:24:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:27,098 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 13:24:27,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 13:24:27,099 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-25 13:24:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:27,100 INFO L225 Difference]: With dead ends: 165 [2018-07-25 13:24:27,100 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 13:24:27,101 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:24:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 13:24:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 13:24:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 13:24:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 13:24:27,107 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-25 13:24:27,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:27,108 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 13:24:27,108 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:24:27,108 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 13:24:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 13:24:27,109 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:27,110 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-25 13:24:27,110 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:27,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-07-25 13:24:27,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:27,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:27,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:24:27,478 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:24:27,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:24:27,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:24:27,481 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-07-25 13:24:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:27,623 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 13:24:27,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 13:24:27,624 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 13:24:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:27,625 INFO L225 Difference]: With dead ends: 167 [2018-07-25 13:24:27,625 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 13:24:27,626 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:24:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 13:24:27,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 13:24:27,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 13:24:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 13:24:27,633 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-25 13:24:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:27,633 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 13:24:27,633 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:24:27,634 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 13:24:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 13:24:27,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:27,635 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-25 13:24:27,636 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:27,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-07-25 13:24:27,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:28,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:28,144 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 13:24:28,144 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 13:24:28,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 13:24:28,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:24:28,145 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-07-25 13:24:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:28,286 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 13:24:28,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 13:24:28,286 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-25 13:24:28,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:28,288 INFO L225 Difference]: With dead ends: 169 [2018-07-25 13:24:28,288 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 13:24:28,289 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:24:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 13:24:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 13:24:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 13:24:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 13:24:28,294 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-25 13:24:28,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:28,294 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 13:24:28,294 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 13:24:28,295 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 13:24:28,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 13:24:28,296 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:28,296 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-25 13:24:28,296 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:28,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-07-25 13:24:28,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:28,690 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:28,690 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:24:28,690 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:24:28,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:24:28,692 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:24:28,692 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-07-25 13:24:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:28,846 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 13:24:28,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 13:24:28,847 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 13:24:28,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:28,848 INFO L225 Difference]: With dead ends: 171 [2018-07-25 13:24:28,848 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 13:24:28,849 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:24:28,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 13:24:28,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 13:24:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 13:24:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 13:24:28,854 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-25 13:24:28,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:28,854 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 13:24:28,854 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:24:28,855 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 13:24:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 13:24:28,856 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:28,856 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-25 13:24:28,856 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:28,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-07-25 13:24:28,857 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:29,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:29,243 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:24:29,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:24:29,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:24:29,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:24:29,245 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-07-25 13:24:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:29,406 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 13:24:29,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 13:24:29,407 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-25 13:24:29,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:29,408 INFO L225 Difference]: With dead ends: 173 [2018-07-25 13:24:29,408 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 13:24:29,409 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:24:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 13:24:29,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 13:24:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 13:24:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 13:24:29,414 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-25 13:24:29,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:29,414 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 13:24:29,414 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:24:29,414 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 13:24:29,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 13:24:29,416 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:29,416 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-25 13:24:29,416 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:29,416 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-07-25 13:24:29,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:29,810 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:29,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:24:29,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:24:29,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:24:29,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:24:29,812 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-07-25 13:24:29,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:29,976 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 13:24:29,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 13:24:29,977 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 13:24:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:29,978 INFO L225 Difference]: With dead ends: 175 [2018-07-25 13:24:29,978 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 13:24:29,979 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:24:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 13:24:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 13:24:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 13:24:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 13:24:29,983 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-25 13:24:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:29,984 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 13:24:29,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:24:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 13:24:29,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 13:24:29,986 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:29,986 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-25 13:24:29,986 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:29,987 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-07-25 13:24:29,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:30,325 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:30,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 13:24:30,326 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 13:24:30,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 13:24:30,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:24:30,327 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-07-25 13:24:30,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:30,485 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 13:24:30,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 13:24:30,485 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-25 13:24:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:30,487 INFO L225 Difference]: With dead ends: 177 [2018-07-25 13:24:30,487 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 13:24:30,488 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:24:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 13:24:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 13:24:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 13:24:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 13:24:30,493 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-25 13:24:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:30,493 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 13:24:30,493 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 13:24:30,493 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 13:24:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 13:24:30,495 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:30,495 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-25 13:24:30,495 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:30,495 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-07-25 13:24:30,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:30,928 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:30,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:24:30,928 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:24:30,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:24:30,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:24:30,929 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-07-25 13:24:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:31,050 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 13:24:31,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 13:24:31,051 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 13:24:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:31,052 INFO L225 Difference]: With dead ends: 179 [2018-07-25 13:24:31,052 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 13:24:31,053 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:24:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 13:24:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 13:24:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 13:24:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 13:24:31,058 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-25 13:24:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:31,058 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 13:24:31,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:24:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 13:24:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 13:24:31,060 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:31,060 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-25 13:24:31,061 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:31,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-07-25 13:24:31,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:31,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:31,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:24:31,436 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:24:31,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:24:31,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:24:31,437 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-07-25 13:24:31,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:31,509 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 13:24:31,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 13:24:31,509 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-25 13:24:31,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:31,511 INFO L225 Difference]: With dead ends: 181 [2018-07-25 13:24:31,511 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 13:24:31,512 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:24:31,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 13:24:31,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 13:24:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 13:24:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 13:24:31,516 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-25 13:24:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:31,517 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 13:24:31,517 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:24:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 13:24:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 13:24:31,519 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:31,519 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-25 13:24:31,519 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:31,519 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-07-25 13:24:31,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:31,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:31,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:24:31,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:24:31,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:24:31,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:24:31,964 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-07-25 13:24:32,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:32,160 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 13:24:32,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 13:24:32,160 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 13:24:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:32,161 INFO L225 Difference]: With dead ends: 183 [2018-07-25 13:24:32,162 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 13:24:32,162 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:24:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 13:24:32,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 13:24:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 13:24:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 13:24:32,167 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-25 13:24:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:32,168 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 13:24:32,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:24:32,168 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 13:24:32,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 13:24:32,170 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:32,170 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-25 13:24:32,170 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:32,171 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-07-25 13:24:32,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:32,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:32,608 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:32,608 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 13:24:32,608 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 13:24:32,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 13:24:32,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:24:32,610 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-07-25 13:24:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:32,729 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 13:24:32,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 13:24:32,729 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-25 13:24:32,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:32,730 INFO L225 Difference]: With dead ends: 185 [2018-07-25 13:24:32,730 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 13:24:32,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:24:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 13:24:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 13:24:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 13:24:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 13:24:32,736 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-25 13:24:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:32,737 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 13:24:32,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 13:24:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 13:24:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 13:24:32,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:32,739 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-25 13:24:32,739 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:32,739 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-07-25 13:24:32,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:33,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:33,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:24:33,200 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:24:33,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:24:33,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:24:33,201 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-07-25 13:24:33,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:33,320 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 13:24:33,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 13:24:33,320 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 13:24:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:33,321 INFO L225 Difference]: With dead ends: 187 [2018-07-25 13:24:33,321 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 13:24:33,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:24:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 13:24:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 13:24:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 13:24:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 13:24:33,333 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-25 13:24:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:33,333 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 13:24:33,333 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:24:33,333 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 13:24:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 13:24:33,335 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:33,335 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-25 13:24:33,335 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:33,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-07-25 13:24:33,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:33,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:33,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:24:33,886 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:24:33,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:24:33,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:24:33,887 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-07-25 13:24:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:34,000 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 13:24:34,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 13:24:34,000 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-25 13:24:34,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:34,001 INFO L225 Difference]: With dead ends: 189 [2018-07-25 13:24:34,002 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 13:24:34,002 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:24:34,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 13:24:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 13:24:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 13:24:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 13:24:34,007 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-25 13:24:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:34,007 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 13:24:34,008 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:24:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 13:24:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 13:24:34,008 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:34,009 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-25 13:24:34,009 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:34,009 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-07-25 13:24:34,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:34,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:34,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:24:34,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:24:34,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:24:34,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:24:34,504 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-07-25 13:24:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:34,707 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 13:24:34,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 13:24:34,708 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 13:24:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:34,709 INFO L225 Difference]: With dead ends: 191 [2018-07-25 13:24:34,709 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 13:24:34,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:24:34,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 13:24:34,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 13:24:34,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 13:24:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 13:24:34,718 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-25 13:24:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:34,718 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 13:24:34,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:24:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 13:24:34,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 13:24:34,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:34,720 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-25 13:24:34,720 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:34,720 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-07-25 13:24:34,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:35,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:35,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 13:24:35,135 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 13:24:35,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 13:24:35,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:24:35,136 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-07-25 13:24:35,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:35,224 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 13:24:35,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 13:24:35,224 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-25 13:24:35,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:35,225 INFO L225 Difference]: With dead ends: 193 [2018-07-25 13:24:35,226 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 13:24:35,226 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:24:35,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 13:24:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 13:24:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 13:24:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 13:24:35,231 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-25 13:24:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:35,232 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 13:24:35,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 13:24:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 13:24:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 13:24:35,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:35,233 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-25 13:24:35,233 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:35,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-07-25 13:24:35,233 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:35,638 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:35,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:24:35,639 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:24:35,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:24:35,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:24:35,640 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-07-25 13:24:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:35,748 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 13:24:35,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 13:24:35,748 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 13:24:35,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:35,749 INFO L225 Difference]: With dead ends: 195 [2018-07-25 13:24:35,749 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 13:24:35,750 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:24:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 13:24:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 13:24:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 13:24:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 13:24:35,755 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-25 13:24:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:35,756 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 13:24:35,756 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:24:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 13:24:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 13:24:35,757 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:35,757 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-25 13:24:35,757 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:35,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-07-25 13:24:35,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:36,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:36,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:24:36,216 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:24:36,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:24:36,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:24:36,218 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-07-25 13:24:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:36,376 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 13:24:36,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 13:24:36,376 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-25 13:24:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:36,377 INFO L225 Difference]: With dead ends: 197 [2018-07-25 13:24:36,377 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 13:24:36,378 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:24:36,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 13:24:36,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 13:24:36,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 13:24:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 13:24:36,383 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-25 13:24:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:36,383 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 13:24:36,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:24:36,384 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 13:24:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 13:24:36,384 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:36,385 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-25 13:24:36,385 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:36,385 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-07-25 13:24:36,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:36,808 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:36,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:24:36,809 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:24:36,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:24:36,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:24:36,810 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-07-25 13:24:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:37,019 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 13:24:37,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 13:24:37,019 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 13:24:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:37,020 INFO L225 Difference]: With dead ends: 199 [2018-07-25 13:24:37,020 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 13:24:37,021 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:24:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 13:24:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 13:24:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 13:24:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 13:24:37,026 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-25 13:24:37,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:37,026 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 13:24:37,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:24:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 13:24:37,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 13:24:37,028 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:37,028 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-25 13:24:37,028 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:37,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-07-25 13:24:37,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:37,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:37,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 13:24:37,414 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 13:24:37,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 13:24:37,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:24:37,416 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-07-25 13:24:37,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:37,585 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 13:24:37,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 13:24:37,586 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-25 13:24:37,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:37,586 INFO L225 Difference]: With dead ends: 201 [2018-07-25 13:24:37,586 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 13:24:37,587 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:24:37,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 13:24:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 13:24:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 13:24:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 13:24:37,591 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-25 13:24:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:37,592 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 13:24:37,592 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 13:24:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 13:24:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 13:24:37,593 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:37,593 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-25 13:24:37,593 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:37,593 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-07-25 13:24:37,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:37,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:37,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:24:37,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:24:37,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:24:37,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:24:37,966 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-07-25 13:24:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:38,124 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 13:24:38,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 13:24:38,124 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 13:24:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:38,125 INFO L225 Difference]: With dead ends: 203 [2018-07-25 13:24:38,125 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 13:24:38,126 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:24:38,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 13:24:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 13:24:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 13:24:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 13:24:38,131 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-25 13:24:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:38,131 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 13:24:38,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:24:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 13:24:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 13:24:38,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:38,133 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-25 13:24:38,133 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:38,133 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-07-25 13:24:38,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:38,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:38,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:24:38,475 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:24:38,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:24:38,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:24:38,476 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-07-25 13:24:38,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:38,623 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 13:24:38,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 13:24:38,623 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-25 13:24:38,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:38,624 INFO L225 Difference]: With dead ends: 205 [2018-07-25 13:24:38,624 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 13:24:38,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:24:38,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 13:24:38,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 13:24:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 13:24:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 13:24:38,637 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-25 13:24:38,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:38,637 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 13:24:38,637 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:24:38,637 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 13:24:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 13:24:38,638 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:38,638 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-25 13:24:38,639 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:38,639 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-07-25 13:24:38,639 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:39,107 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:39,107 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:24:39,107 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:24:39,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:24:39,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:24:39,110 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-07-25 13:24:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:39,303 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 13:24:39,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 13:24:39,303 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 13:24:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:39,305 INFO L225 Difference]: With dead ends: 207 [2018-07-25 13:24:39,305 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 13:24:39,306 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:24:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 13:24:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 13:24:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 13:24:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 13:24:39,312 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-25 13:24:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:39,312 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 13:24:39,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:24:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 13:24:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 13:24:39,313 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:39,314 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-25 13:24:39,314 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:39,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-07-25 13:24:39,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:39,767 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:39,767 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 13:24:39,768 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 13:24:39,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 13:24:39,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:24:39,770 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-07-25 13:24:39,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:39,849 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 13:24:39,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 13:24:39,849 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-25 13:24:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:39,850 INFO L225 Difference]: With dead ends: 209 [2018-07-25 13:24:39,850 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 13:24:39,851 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:24:39,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 13:24:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 13:24:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 13:24:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 13:24:39,856 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-25 13:24:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:39,856 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 13:24:39,857 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 13:24:39,857 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 13:24:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 13:24:39,858 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:39,858 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-25 13:24:39,858 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:39,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-07-25 13:24:39,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:40,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:40,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:24:40,285 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:24:40,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:24:40,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:24:40,287 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-07-25 13:24:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:40,441 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 13:24:40,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 13:24:40,441 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 13:24:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:40,442 INFO L225 Difference]: With dead ends: 211 [2018-07-25 13:24:40,442 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 13:24:40,443 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:24:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 13:24:40,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 13:24:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 13:24:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 13:24:40,448 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-25 13:24:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:40,448 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 13:24:40,448 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:24:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 13:24:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 13:24:40,450 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:40,450 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-25 13:24:40,450 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-07-25 13:24:40,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:40,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:40,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:24:40,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:24:40,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:24:40,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:24:40,928 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-07-25 13:24:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:41,109 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 13:24:41,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 13:24:41,109 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-25 13:24:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:41,109 INFO L225 Difference]: With dead ends: 213 [2018-07-25 13:24:41,110 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 13:24:41,111 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:24:41,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 13:24:41,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 13:24:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 13:24:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 13:24:41,115 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-07-25 13:24:41,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:41,115 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 13:24:41,115 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:24:41,116 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 13:24:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 13:24:41,117 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:41,117 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-07-25 13:24:41,117 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:41,117 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-07-25 13:24:41,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:41,526 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:41,526 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:24:41,526 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:24:41,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:24:41,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:24:41,528 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-07-25 13:24:41,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:41,621 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 13:24:41,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 13:24:41,621 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 13:24:41,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:41,622 INFO L225 Difference]: With dead ends: 215 [2018-07-25 13:24:41,622 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 13:24:41,623 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:24:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 13:24:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 13:24:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 13:24:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 13:24:41,626 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-07-25 13:24:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:41,627 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 13:24:41,627 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:24:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 13:24:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 13:24:41,628 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:41,628 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-07-25 13:24:41,628 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:41,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-07-25 13:24:41,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:42,113 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:42,113 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 13:24:42,113 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 13:24:42,114 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 13:24:42,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:24:42,115 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-07-25 13:24:42,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:42,331 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 13:24:42,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 13:24:42,331 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-25 13:24:42,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:42,331 INFO L225 Difference]: With dead ends: 217 [2018-07-25 13:24:42,332 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 13:24:42,332 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:24:42,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 13:24:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 13:24:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 13:24:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 13:24:42,337 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-07-25 13:24:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:42,337 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 13:24:42,337 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 13:24:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 13:24:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 13:24:42,338 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:42,338 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-07-25 13:24:42,338 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:42,339 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-07-25 13:24:42,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:42,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:42,783 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:24:42,784 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:24:42,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:24:42,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:24:42,786 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-07-25 13:24:42,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:42,951 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 13:24:42,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 13:24:42,951 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 13:24:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:42,952 INFO L225 Difference]: With dead ends: 219 [2018-07-25 13:24:42,952 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 13:24:42,953 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:24:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 13:24:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 13:24:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 13:24:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 13:24:42,958 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-07-25 13:24:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:42,958 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 13:24:42,958 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:24:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 13:24:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 13:24:42,959 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:42,959 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-07-25 13:24:42,959 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:42,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-07-25 13:24:42,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:43,471 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:43,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 13:24:43,471 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 13:24:43,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 13:24:43,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:24:43,473 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-07-25 13:24:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:43,651 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 13:24:43,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 13:24:43,651 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-25 13:24:43,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:43,652 INFO L225 Difference]: With dead ends: 221 [2018-07-25 13:24:43,652 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 13:24:43,653 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:24:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 13:24:43,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 13:24:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 13:24:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 13:24:43,658 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-07-25 13:24:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:43,658 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 13:24:43,658 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 13:24:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 13:24:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 13:24:43,659 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:43,660 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-07-25 13:24:43,660 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:43,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-07-25 13:24:43,660 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:44,138 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:44,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:24:44,138 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:24:44,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:24:44,140 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:24:44,140 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-07-25 13:24:44,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:44,382 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 13:24:44,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 13:24:44,382 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 13:24:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:44,383 INFO L225 Difference]: With dead ends: 223 [2018-07-25 13:24:44,383 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 13:24:44,384 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:24:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 13:24:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 13:24:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 13:24:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 13:24:44,388 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-07-25 13:24:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:44,389 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 13:24:44,389 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:24:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 13:24:44,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 13:24:44,390 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:44,390 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-07-25 13:24:44,390 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:44,391 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-07-25 13:24:44,391 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:45,141 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:45,141 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 13:24:45,141 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 13:24:45,142 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 13:24:45,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:24:45,143 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-07-25 13:24:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:45,384 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 13:24:45,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 13:24:45,385 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-25 13:24:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:45,385 INFO L225 Difference]: With dead ends: 225 [2018-07-25 13:24:45,385 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 13:24:45,386 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:24:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 13:24:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 13:24:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 13:24:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 13:24:45,390 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-07-25 13:24:45,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:45,390 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 13:24:45,390 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 13:24:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 13:24:45,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 13:24:45,391 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:45,391 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-07-25 13:24:45,391 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:45,391 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-07-25 13:24:45,391 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:45,893 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:45,893 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:24:45,894 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:24:45,895 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:24:45,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:24:45,895 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-07-25 13:24:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:46,046 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 13:24:46,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 13:24:46,047 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 13:24:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:46,047 INFO L225 Difference]: With dead ends: 227 [2018-07-25 13:24:46,047 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 13:24:46,048 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:24:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 13:24:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 13:24:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 13:24:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 13:24:46,052 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-07-25 13:24:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:46,053 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 13:24:46,053 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:24:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 13:24:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 13:24:46,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:46,054 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-07-25 13:24:46,054 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:46,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-07-25 13:24:46,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:46,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:46,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 13:24:46,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 13:24:46,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 13:24:46,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:24:46,518 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-07-25 13:24:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:46,642 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 13:24:46,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 13:24:46,643 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-25 13:24:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:46,644 INFO L225 Difference]: With dead ends: 229 [2018-07-25 13:24:46,644 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 13:24:46,645 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:24:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 13:24:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 13:24:46,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 13:24:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 13:24:46,649 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-07-25 13:24:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:46,649 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 13:24:46,650 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 13:24:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 13:24:46,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 13:24:46,651 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:46,651 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-07-25 13:24:46,651 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:46,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-07-25 13:24:46,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:47,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:47,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 13:24:47,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 13:24:47,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 13:24:47,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:24:47,156 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-07-25 13:24:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:47,301 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 13:24:47,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 13:24:47,301 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 13:24:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:47,301 INFO L225 Difference]: With dead ends: 231 [2018-07-25 13:24:47,301 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 13:24:47,302 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:24:47,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 13:24:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 13:24:47,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 13:24:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 13:24:47,306 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-07-25 13:24:47,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:47,307 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 13:24:47,307 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 13:24:47,307 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 13:24:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 13:24:47,308 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:47,308 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-07-25 13:24:47,308 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:47,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-07-25 13:24:47,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:47,755 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:47,755 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 13:24:47,755 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 13:24:47,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 13:24:47,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:24:47,757 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-07-25 13:24:47,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:47,920 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 13:24:47,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 13:24:47,920 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-25 13:24:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:47,921 INFO L225 Difference]: With dead ends: 233 [2018-07-25 13:24:47,921 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 13:24:47,921 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:24:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 13:24:47,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 13:24:47,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 13:24:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 13:24:47,924 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-07-25 13:24:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:47,924 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 13:24:47,924 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 13:24:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 13:24:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 13:24:47,925 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:47,925 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-07-25 13:24:47,925 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:47,926 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-07-25 13:24:47,926 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:48,459 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:48,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 13:24:48,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 13:24:48,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 13:24:48,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:24:48,461 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-07-25 13:24:48,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:48,735 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 13:24:48,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 13:24:48,735 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 13:24:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:48,736 INFO L225 Difference]: With dead ends: 235 [2018-07-25 13:24:48,736 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 13:24:48,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:24:48,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 13:24:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 13:24:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 13:24:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 13:24:48,741 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-07-25 13:24:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:48,742 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 13:24:48,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 13:24:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 13:24:48,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 13:24:48,743 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:48,743 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-07-25 13:24:48,743 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:48,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-07-25 13:24:48,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:49,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:49,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 13:24:49,287 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 13:24:49,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 13:24:49,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:24:49,288 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-07-25 13:24:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:49,566 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 13:24:49,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 13:24:49,567 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-25 13:24:49,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:49,567 INFO L225 Difference]: With dead ends: 237 [2018-07-25 13:24:49,567 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 13:24:49,568 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:24:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 13:24:49,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 13:24:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 13:24:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 13:24:49,571 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-07-25 13:24:49,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:49,572 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 13:24:49,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 13:24:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 13:24:49,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 13:24:49,573 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:49,573 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-07-25 13:24:49,573 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:49,573 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-07-25 13:24:49,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:50,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:50,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 13:24:50,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 13:24:50,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 13:24:50,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:24:50,055 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-07-25 13:24:50,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:50,272 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 13:24:50,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 13:24:50,272 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 13:24:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:50,273 INFO L225 Difference]: With dead ends: 239 [2018-07-25 13:24:50,273 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 13:24:50,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:24:50,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 13:24:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 13:24:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 13:24:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 13:24:50,278 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-07-25 13:24:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:50,278 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 13:24:50,278 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 13:24:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 13:24:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 13:24:50,279 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:50,279 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-07-25 13:24:50,279 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:50,279 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-07-25 13:24:50,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:50,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:50,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 13:24:50,872 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 13:24:50,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 13:24:50,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:24:50,874 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-07-25 13:24:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:51,111 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 13:24:51,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 13:24:51,112 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-07-25 13:24:51,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:51,112 INFO L225 Difference]: With dead ends: 241 [2018-07-25 13:24:51,112 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 13:24:51,113 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:24:51,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 13:24:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 13:24:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 13:24:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 13:24:51,117 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-07-25 13:24:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:51,118 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 13:24:51,118 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 13:24:51,118 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 13:24:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 13:24:51,119 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:51,119 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-07-25 13:24:51,119 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:51,119 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-07-25 13:24:51,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:51,746 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:51,746 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 13:24:51,747 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 13:24:51,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 13:24:51,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:24:51,749 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-07-25 13:24:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:51,901 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 13:24:51,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 13:24:51,901 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 13:24:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:51,901 INFO L225 Difference]: With dead ends: 243 [2018-07-25 13:24:51,902 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 13:24:51,903 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:24:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 13:24:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 13:24:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 13:24:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 13:24:51,907 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-07-25 13:24:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:51,908 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 13:24:51,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 13:24:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 13:24:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 13:24:51,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:51,909 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-07-25 13:24:51,909 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:51,909 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-07-25 13:24:51,909 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:52,439 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:52,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 13:24:52,440 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 13:24:52,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 13:24:52,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:24:52,441 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 121 states. [2018-07-25 13:24:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:52,609 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 13:24:52,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 13:24:52,609 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 240 [2018-07-25 13:24:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:52,610 INFO L225 Difference]: With dead ends: 245 [2018-07-25 13:24:52,610 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 13:24:52,611 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:24:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 13:24:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 13:24:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 13:24:52,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 13:24:52,614 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-07-25 13:24:52,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:52,614 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 13:24:52,614 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 13:24:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 13:24:52,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 13:24:52,615 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:52,615 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-07-25 13:24:52,616 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:52,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1239446717, now seen corresponding path program 119 times [2018-07-25 13:24:52,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:53,128 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:53,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 13:24:53,128 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 13:24:53,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 13:24:53,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:24:53,130 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 122 states. [2018-07-25 13:24:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:53,369 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 13:24:53,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 13:24:53,369 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 13:24:53,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:53,370 INFO L225 Difference]: With dead ends: 247 [2018-07-25 13:24:53,370 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 13:24:53,371 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:24:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 13:24:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 13:24:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 13:24:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 13:24:53,373 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-07-25 13:24:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:53,374 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 13:24:53,374 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 13:24:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 13:24:53,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 13:24:53,375 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:53,375 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-07-25 13:24:53,375 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:53,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1402406135, now seen corresponding path program 120 times [2018-07-25 13:24:53,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:53,909 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:53,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 13:24:53,909 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 13:24:53,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 13:24:53,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:24:53,911 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 123 states. [2018-07-25 13:24:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:54,202 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 13:24:54,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 13:24:54,202 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 244 [2018-07-25 13:24:54,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:54,202 INFO L225 Difference]: With dead ends: 249 [2018-07-25 13:24:54,203 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 13:24:54,204 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:24:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 13:24:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 13:24:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 13:24:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 13:24:54,208 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-07-25 13:24:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:54,208 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 13:24:54,208 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 13:24:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 13:24:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 13:24:54,209 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:54,209 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-07-25 13:24:54,210 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:54,210 INFO L82 PathProgramCache]: Analyzing trace with hash -907383119, now seen corresponding path program 121 times [2018-07-25 13:24:54,210 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:54,794 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:54,794 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:54,794 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 13:24:54,794 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 13:24:54,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 13:24:54,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:24:54,796 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 124 states. [2018-07-25 13:24:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:55,075 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 13:24:55,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 13:24:55,076 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 13:24:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:55,077 INFO L225 Difference]: With dead ends: 251 [2018-07-25 13:24:55,077 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 13:24:55,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:24:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 13:24:55,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 13:24:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 13:24:55,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 13:24:55,083 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-07-25 13:24:55,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:55,084 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 13:24:55,084 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 13:24:55,084 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 13:24:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 13:24:55,085 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:55,085 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-07-25 13:24:55,086 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:55,086 INFO L82 PathProgramCache]: Analyzing trace with hash -116764181, now seen corresponding path program 122 times [2018-07-25 13:24:55,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:55,883 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:55,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 13:24:55,883 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 13:24:55,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 13:24:55,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:24:55,886 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 125 states. [2018-07-25 13:24:56,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:56,145 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 13:24:56,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 13:24:56,145 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 248 [2018-07-25 13:24:56,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:56,146 INFO L225 Difference]: With dead ends: 253 [2018-07-25 13:24:56,146 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 13:24:56,148 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:24:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 13:24:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 13:24:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 13:24:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 13:24:56,152 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-07-25 13:24:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:56,153 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 13:24:56,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 13:24:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 13:24:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 13:24:56,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:56,154 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-07-25 13:24:56,154 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:56,155 INFO L82 PathProgramCache]: Analyzing trace with hash -541176155, now seen corresponding path program 123 times [2018-07-25 13:24:56,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:56,729 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:56,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 13:24:56,730 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 13:24:56,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 13:24:56,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:24:56,731 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 126 states. [2018-07-25 13:24:56,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:56,860 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 13:24:56,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 13:24:56,860 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 13:24:56,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:56,861 INFO L225 Difference]: With dead ends: 255 [2018-07-25 13:24:56,861 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 13:24:56,862 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:24:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 13:24:56,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 13:24:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 13:24:56,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 13:24:56,865 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-07-25 13:24:56,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:56,866 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 13:24:56,866 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 13:24:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 13:24:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 13:24:56,867 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:56,867 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-07-25 13:24:56,867 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash -379190049, now seen corresponding path program 124 times [2018-07-25 13:24:56,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:57,433 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:57,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 13:24:57,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 13:24:57,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 13:24:57,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:24:57,436 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 127 states. [2018-07-25 13:24:57,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:57,752 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 13:24:57,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 13:24:57,752 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 252 [2018-07-25 13:24:57,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:57,753 INFO L225 Difference]: With dead ends: 257 [2018-07-25 13:24:57,753 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 13:24:57,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:24:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 13:24:57,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 13:24:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 13:24:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 13:24:57,757 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-07-25 13:24:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:57,757 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 13:24:57,757 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 13:24:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 13:24:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 13:24:57,759 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:57,759 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-07-25 13:24:57,759 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:57,759 INFO L82 PathProgramCache]: Analyzing trace with hash 670635161, now seen corresponding path program 125 times [2018-07-25 13:24:57,759 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:58,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:58,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 13:24:58,489 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 13:24:58,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 13:24:58,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:24:58,491 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 128 states. [2018-07-25 13:24:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:58,675 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 13:24:58,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 13:24:58,675 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 13:24:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:58,676 INFO L225 Difference]: With dead ends: 259 [2018-07-25 13:24:58,676 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 13:24:58,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:24:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 13:24:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 13:24:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 13:24:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-25 13:24:58,681 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-07-25 13:24:58,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:58,682 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-25 13:24:58,682 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 13:24:58,682 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-25 13:24:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 13:24:58,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:58,683 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-07-25 13:24:58,683 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:58,683 INFO L82 PathProgramCache]: Analyzing trace with hash 235347411, now seen corresponding path program 126 times [2018-07-25 13:24:58,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:59,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:59,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 13:24:59,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 13:24:59,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 13:24:59,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:24:59,301 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 129 states. [2018-07-25 13:24:59,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:59,615 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 13:24:59,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 13:24:59,615 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 256 [2018-07-25 13:24:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:59,616 INFO L225 Difference]: With dead ends: 261 [2018-07-25 13:24:59,616 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 13:24:59,617 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:24:59,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 13:24:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 13:24:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 13:24:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-07-25 13:24:59,620 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-07-25 13:24:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:59,621 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-07-25 13:24:59,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 13:24:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-07-25 13:24:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 13:24:59,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:59,622 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-07-25 13:24:59,622 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:59,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1464352627, now seen corresponding path program 127 times [2018-07-25 13:24:59,622 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:00,214 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:00,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 13:25:00,215 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 13:25:00,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 13:25:00,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:25:00,218 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 130 states. [2018-07-25 13:25:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:00,338 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 13:25:00,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 13:25:00,339 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 13:25:00,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:00,339 INFO L225 Difference]: With dead ends: 263 [2018-07-25 13:25:00,340 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 13:25:00,341 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:25:00,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 13:25:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 13:25:00,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 13:25:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-07-25 13:25:00,345 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-07-25 13:25:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:00,346 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-07-25 13:25:00,346 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 13:25:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-07-25 13:25:00,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 13:25:00,347 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:00,347 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-07-25 13:25:00,347 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:00,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1506450631, now seen corresponding path program 128 times [2018-07-25 13:25:00,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:00,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:00,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 13:25:00,959 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 13:25:00,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 13:25:00,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:25:00,961 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 131 states. [2018-07-25 13:25:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:01,240 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 13:25:01,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 13:25:01,240 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 260 [2018-07-25 13:25:01,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:01,240 INFO L225 Difference]: With dead ends: 265 [2018-07-25 13:25:01,240 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 13:25:01,242 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:25:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 13:25:01,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-25 13:25:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 13:25:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-07-25 13:25:01,245 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-07-25 13:25:01,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:01,245 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-07-25 13:25:01,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 13:25:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-07-25 13:25:01,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 13:25:01,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:01,247 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-07-25 13:25:01,247 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:01,247 INFO L82 PathProgramCache]: Analyzing trace with hash 295129729, now seen corresponding path program 129 times [2018-07-25 13:25:01,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:01,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:01,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 13:25:01,913 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 13:25:01,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 13:25:01,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:25:01,915 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 132 states. [2018-07-25 13:25:02,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:02,230 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 13:25:02,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 13:25:02,230 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 13:25:02,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:02,230 INFO L225 Difference]: With dead ends: 267 [2018-07-25 13:25:02,231 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 13:25:02,232 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:25:02,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 13:25:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 13:25:02,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 13:25:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-07-25 13:25:02,236 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-07-25 13:25:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:02,236 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-07-25 13:25:02,236 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 13:25:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-07-25 13:25:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 13:25:02,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:02,238 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-07-25 13:25:02,238 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:02,238 INFO L82 PathProgramCache]: Analyzing trace with hash 151880123, now seen corresponding path program 130 times [2018-07-25 13:25:02,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:02,888 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:02,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 13:25:02,888 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 13:25:02,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 13:25:02,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:25:02,890 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 133 states. [2018-07-25 13:25:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:03,067 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 13:25:03,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 13:25:03,067 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 264 [2018-07-25 13:25:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:03,067 INFO L225 Difference]: With dead ends: 269 [2018-07-25 13:25:03,067 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 13:25:03,069 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:25:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 13:25:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-25 13:25:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 13:25:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-07-25 13:25:03,074 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-07-25 13:25:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:03,074 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-07-25 13:25:03,074 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 13:25:03,074 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-07-25 13:25:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 13:25:03,075 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:03,076 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-07-25 13:25:03,076 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash -72037771, now seen corresponding path program 131 times [2018-07-25 13:25:03,076 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:03,738 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:03,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 13:25:03,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 13:25:03,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 13:25:03,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:25:03,741 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 134 states. [2018-07-25 13:25:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:04,065 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 13:25:04,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 13:25:04,065 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 13:25:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:04,065 INFO L225 Difference]: With dead ends: 271 [2018-07-25 13:25:04,065 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 13:25:04,067 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:25:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 13:25:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 13:25:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 13:25:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-07-25 13:25:04,070 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-07-25 13:25:04,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:04,070 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-07-25 13:25:04,070 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 13:25:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-07-25 13:25:04,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 13:25:04,071 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:04,071 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-07-25 13:25:04,071 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:04,071 INFO L82 PathProgramCache]: Analyzing trace with hash -508769105, now seen corresponding path program 132 times [2018-07-25 13:25:04,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:04,785 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:04,785 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 13:25:04,785 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 13:25:04,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 13:25:04,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:25:04,787 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 135 states. [2018-07-25 13:25:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:05,181 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 13:25:05,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 13:25:05,182 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 268 [2018-07-25 13:25:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:05,182 INFO L225 Difference]: With dead ends: 273 [2018-07-25 13:25:05,182 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 13:25:05,183 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:25:05,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 13:25:05,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 13:25:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 13:25:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-07-25 13:25:05,187 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-07-25 13:25:05,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:05,187 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-07-25 13:25:05,187 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 13:25:05,187 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-07-25 13:25:05,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 13:25:05,188 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:05,188 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-07-25 13:25:05,189 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:05,189 INFO L82 PathProgramCache]: Analyzing trace with hash 699213929, now seen corresponding path program 133 times [2018-07-25 13:25:05,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:05,855 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:05,855 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 13:25:05,855 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 13:25:05,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 13:25:05,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:25:05,858 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 136 states. [2018-07-25 13:25:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:06,103 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 13:25:06,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 13:25:06,103 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 13:25:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:06,103 INFO L225 Difference]: With dead ends: 275 [2018-07-25 13:25:06,104 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 13:25:06,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:25:06,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 13:25:06,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 13:25:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 13:25:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-07-25 13:25:06,109 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-07-25 13:25:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:06,109 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-07-25 13:25:06,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 13:25:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-07-25 13:25:06,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 13:25:06,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:06,111 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-07-25 13:25:06,111 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:06,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1929739683, now seen corresponding path program 134 times [2018-07-25 13:25:06,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:06,810 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:06,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 13:25:06,810 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 13:25:06,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 13:25:06,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:25:06,812 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 137 states. [2018-07-25 13:25:06,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:06,963 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 13:25:06,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 13:25:06,963 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 272 [2018-07-25 13:25:06,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:06,964 INFO L225 Difference]: With dead ends: 277 [2018-07-25 13:25:06,964 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 13:25:06,966 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:25:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 13:25:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-25 13:25:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 13:25:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-07-25 13:25:06,970 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-07-25 13:25:06,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:06,971 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-07-25 13:25:06,971 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 13:25:06,971 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-07-25 13:25:06,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 13:25:06,972 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:06,972 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-07-25 13:25:06,973 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:06,973 INFO L82 PathProgramCache]: Analyzing trace with hash -945984419, now seen corresponding path program 135 times [2018-07-25 13:25:06,973 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:07,950 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:07,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 13:25:07,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 13:25:07,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 13:25:07,952 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:25:07,952 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 138 states. [2018-07-25 13:25:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:08,344 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 13:25:08,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 13:25:08,345 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 13:25:08,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:08,345 INFO L225 Difference]: With dead ends: 279 [2018-07-25 13:25:08,345 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 13:25:08,346 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:25:08,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 13:25:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 13:25:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 13:25:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-07-25 13:25:08,349 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-07-25 13:25:08,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:08,350 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-07-25 13:25:08,350 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 13:25:08,350 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-07-25 13:25:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 13:25:08,350 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:08,351 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-07-25 13:25:08,351 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:08,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1442092183, now seen corresponding path program 136 times [2018-07-25 13:25:08,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:09,176 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:09,176 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 13:25:09,176 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 13:25:09,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 13:25:09,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:25:09,179 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 139 states. [2018-07-25 13:25:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:09,584 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 13:25:09,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 13:25:09,585 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 276 [2018-07-25 13:25:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:09,585 INFO L225 Difference]: With dead ends: 281 [2018-07-25 13:25:09,585 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 13:25:09,586 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:25:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 13:25:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-25 13:25:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 13:25:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-07-25 13:25:09,589 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-07-25 13:25:09,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:09,590 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-07-25 13:25:09,590 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 13:25:09,590 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-07-25 13:25:09,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 13:25:09,590 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:09,591 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-07-25 13:25:09,591 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:09,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1423796655, now seen corresponding path program 137 times [2018-07-25 13:25:09,591 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:10,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:10,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 13:25:10,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 13:25:10,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 13:25:10,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:25:10,410 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 140 states. [2018-07-25 13:25:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:10,788 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 13:25:10,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 13:25:10,789 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 13:25:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:10,789 INFO L225 Difference]: With dead ends: 283 [2018-07-25 13:25:10,789 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 13:25:10,790 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:25:10,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 13:25:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 13:25:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 13:25:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-07-25 13:25:10,795 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-07-25 13:25:10,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:10,795 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-07-25 13:25:10,795 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 13:25:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-07-25 13:25:10,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 13:25:10,796 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:10,796 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-07-25 13:25:10,797 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:10,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1826034059, now seen corresponding path program 138 times [2018-07-25 13:25:10,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:11,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:11,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 13:25:11,549 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 13:25:11,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 13:25:11,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:25:11,551 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 141 states. [2018-07-25 13:25:11,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:11,953 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 13:25:11,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 13:25:11,954 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 280 [2018-07-25 13:25:11,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:11,954 INFO L225 Difference]: With dead ends: 285 [2018-07-25 13:25:11,954 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 13:25:11,955 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:25:11,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 13:25:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 13:25:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 13:25:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-07-25 13:25:11,958 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-07-25 13:25:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:11,959 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-07-25 13:25:11,959 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 13:25:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-07-25 13:25:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 13:25:11,959 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:11,960 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-07-25 13:25:11,960 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:11,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1822841275, now seen corresponding path program 139 times [2018-07-25 13:25:11,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:12,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:12,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 13:25:12,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 13:25:12,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 13:25:12,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:25:12,753 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 142 states. [2018-07-25 13:25:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:13,162 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 13:25:13,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 13:25:13,162 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 13:25:13,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:13,162 INFO L225 Difference]: With dead ends: 287 [2018-07-25 13:25:13,162 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 13:25:13,164 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:25:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 13:25:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 13:25:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 13:25:13,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-07-25 13:25:13,167 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-07-25 13:25:13,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:13,167 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-07-25 13:25:13,167 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 13:25:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-07-25 13:25:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 13:25:13,168 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:13,168 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-07-25 13:25:13,168 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:13,168 INFO L82 PathProgramCache]: Analyzing trace with hash 596243583, now seen corresponding path program 140 times [2018-07-25 13:25:13,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:13,930 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:13,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 13:25:13,931 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 13:25:13,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 13:25:13,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:25:13,933 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 143 states. [2018-07-25 13:25:14,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:14,369 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 13:25:14,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 13:25:14,370 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 284 [2018-07-25 13:25:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:14,370 INFO L225 Difference]: With dead ends: 289 [2018-07-25 13:25:14,370 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 13:25:14,372 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:25:14,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 13:25:14,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-25 13:25:14,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 13:25:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-07-25 13:25:14,377 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-07-25 13:25:14,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:14,377 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-07-25 13:25:14,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 13:25:14,378 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-07-25 13:25:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 13:25:14,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:14,379 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-07-25 13:25:14,379 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:14,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1759484985, now seen corresponding path program 141 times [2018-07-25 13:25:14,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:15,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:15,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 13:25:15,321 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 13:25:15,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 13:25:15,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:25:15,324 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 144 states. [2018-07-25 13:25:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:15,771 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 13:25:15,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 13:25:15,771 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 13:25:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:15,772 INFO L225 Difference]: With dead ends: 291 [2018-07-25 13:25:15,772 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 13:25:15,773 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:25:15,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 13:25:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 13:25:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 13:25:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-07-25 13:25:15,776 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-07-25 13:25:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:15,776 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-07-25 13:25:15,776 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 13:25:15,776 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-07-25 13:25:15,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 13:25:15,777 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:15,778 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-07-25 13:25:15,778 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:15,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1351991949, now seen corresponding path program 142 times [2018-07-25 13:25:15,778 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:16,791 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:16,791 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 13:25:16,791 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 13:25:16,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 13:25:16,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:25:16,794 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 145 states. [2018-07-25 13:25:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:17,294 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 13:25:17,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 13:25:17,294 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 288 [2018-07-25 13:25:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:17,295 INFO L225 Difference]: With dead ends: 293 [2018-07-25 13:25:17,295 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 13:25:17,296 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:25:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 13:25:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-25 13:25:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 13:25:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-07-25 13:25:17,299 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-07-25 13:25:17,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:17,299 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-07-25 13:25:17,299 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 13:25:17,299 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-07-25 13:25:17,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 13:25:17,300 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:17,300 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-07-25 13:25:17,301 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:17,301 INFO L82 PathProgramCache]: Analyzing trace with hash 2110879789, now seen corresponding path program 143 times [2018-07-25 13:25:17,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:18,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:18,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 13:25:18,118 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 13:25:18,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 13:25:18,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:25:18,120 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 146 states. [2018-07-25 13:25:18,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:18,433 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 13:25:18,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 13:25:18,433 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 13:25:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:18,434 INFO L225 Difference]: With dead ends: 295 [2018-07-25 13:25:18,434 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 13:25:18,435 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:25:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 13:25:18,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 13:25:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 13:25:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-07-25 13:25:18,438 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-07-25 13:25:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:18,438 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-07-25 13:25:18,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 13:25:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-07-25 13:25:18,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 13:25:18,439 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:18,439 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-07-25 13:25:18,440 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:18,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965607, now seen corresponding path program 144 times [2018-07-25 13:25:18,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:19,420 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:19,420 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:19,420 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 13:25:19,421 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 13:25:19,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 13:25:19,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:25:19,422 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 147 states. [2018-07-25 13:25:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:19,639 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 13:25:19,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 13:25:19,639 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 292 [2018-07-25 13:25:19,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:19,640 INFO L225 Difference]: With dead ends: 297 [2018-07-25 13:25:19,640 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 13:25:19,641 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:25:19,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 13:25:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 13:25:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 13:25:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-07-25 13:25:19,645 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-07-25 13:25:19,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:19,645 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-07-25 13:25:19,645 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 13:25:19,645 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-07-25 13:25:19,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 13:25:19,646 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:19,646 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-07-25 13:25:19,647 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:19,647 INFO L82 PathProgramCache]: Analyzing trace with hash -842253791, now seen corresponding path program 145 times [2018-07-25 13:25:19,647 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:20,577 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:20,577 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 13:25:20,577 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 13:25:20,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 13:25:20,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:25:20,580 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 148 states. [2018-07-25 13:25:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:21,081 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 13:25:21,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 13:25:21,082 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 13:25:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:21,082 INFO L225 Difference]: With dead ends: 299 [2018-07-25 13:25:21,083 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 13:25:21,085 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:25:21,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 13:25:21,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 13:25:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 13:25:21,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-07-25 13:25:21,088 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-07-25 13:25:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:21,089 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-07-25 13:25:21,089 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 13:25:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-07-25 13:25:21,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 13:25:21,089 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:21,089 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-07-25 13:25:21,090 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:21,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1951989413, now seen corresponding path program 146 times [2018-07-25 13:25:21,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:21,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:21,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 13:25:21,939 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 13:25:21,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 13:25:21,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:25:21,941 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 149 states. [2018-07-25 13:25:22,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:22,527 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 13:25:22,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 13:25:22,527 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 296 [2018-07-25 13:25:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:22,527 INFO L225 Difference]: With dead ends: 301 [2018-07-25 13:25:22,528 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 13:25:22,530 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:25:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 13:25:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-25 13:25:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 13:25:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-07-25 13:25:22,534 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-07-25 13:25:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:22,535 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-07-25 13:25:22,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 13:25:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-07-25 13:25:22,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 13:25:22,536 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:22,536 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-07-25 13:25:22,536 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:22,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1038934549, now seen corresponding path program 147 times [2018-07-25 13:25:22,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:23,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:23,688 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 13:25:23,688 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 13:25:23,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 13:25:23,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:25:23,690 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 150 states. [2018-07-25 13:25:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:24,262 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 13:25:24,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 13:25:24,262 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 13:25:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:24,263 INFO L225 Difference]: With dead ends: 303 [2018-07-25 13:25:24,263 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 13:25:24,264 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:25:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 13:25:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 13:25:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 13:25:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-07-25 13:25:24,267 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-07-25 13:25:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:24,267 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-07-25 13:25:24,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 13:25:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-07-25 13:25:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 13:25:24,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:24,269 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-07-25 13:25:24,269 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:24,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1983741007, now seen corresponding path program 148 times [2018-07-25 13:25:24,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:25,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:25,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 13:25:25,321 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 13:25:25,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 13:25:25,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:25:25,324 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 151 states. [2018-07-25 13:25:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:25,542 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 13:25:25,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 13:25:25,543 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 300 [2018-07-25 13:25:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:25,543 INFO L225 Difference]: With dead ends: 305 [2018-07-25 13:25:25,543 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 13:25:25,545 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:25:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 13:25:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-25 13:25:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 13:25:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-07-25 13:25:25,548 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-07-25 13:25:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:25,548 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-07-25 13:25:25,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 13:25:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-07-25 13:25:25,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 13:25:25,549 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:25,549 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-07-25 13:25:25,549 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:25,549 INFO L82 PathProgramCache]: Analyzing trace with hash -590319607, now seen corresponding path program 149 times [2018-07-25 13:25:25,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:26,578 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:26,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 13:25:26,579 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 13:25:26,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 13:25:26,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:25:26,582 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 152 states. [2018-07-25 13:25:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:27,288 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 13:25:27,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 13:25:27,288 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 13:25:27,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:27,289 INFO L225 Difference]: With dead ends: 307 [2018-07-25 13:25:27,289 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 13:25:27,290 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:25:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 13:25:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 13:25:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 13:25:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-07-25 13:25:27,293 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-07-25 13:25:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:27,293 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-07-25 13:25:27,294 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 13:25:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-07-25 13:25:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 13:25:27,294 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:27,294 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-07-25 13:25:27,295 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:27,295 INFO L82 PathProgramCache]: Analyzing trace with hash -361407165, now seen corresponding path program 150 times [2018-07-25 13:25:27,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:28,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:28,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 13:25:28,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 13:25:28,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 13:25:28,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:25:28,345 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 153 states. [2018-07-25 13:25:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:28,986 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 13:25:28,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 13:25:28,986 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 304 [2018-07-25 13:25:28,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:28,986 INFO L225 Difference]: With dead ends: 309 [2018-07-25 13:25:28,987 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 13:25:28,988 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:25:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 13:25:28,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 13:25:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 13:25:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-07-25 13:25:28,991 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-07-25 13:25:28,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:28,991 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-07-25 13:25:28,991 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 13:25:28,991 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-07-25 13:25:28,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 13:25:28,992 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:28,992 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-07-25 13:25:28,992 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:28,993 INFO L82 PathProgramCache]: Analyzing trace with hash 580117501, now seen corresponding path program 151 times [2018-07-25 13:25:28,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:30,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:30,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 13:25:30,028 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 13:25:30,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 13:25:30,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:25:30,031 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 154 states. [2018-07-25 13:25:30,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:30,497 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 13:25:30,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 13:25:30,497 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 13:25:30,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:30,498 INFO L225 Difference]: With dead ends: 311 [2018-07-25 13:25:30,499 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 13:25:30,501 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:25:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 13:25:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 13:25:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 13:25:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-07-25 13:25:30,506 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-07-25 13:25:30,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:30,506 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-07-25 13:25:30,506 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 13:25:30,507 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-07-25 13:25:30,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 13:25:30,508 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:30,508 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-07-25 13:25:30,508 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:30,508 INFO L82 PathProgramCache]: Analyzing trace with hash -852777929, now seen corresponding path program 152 times [2018-07-25 13:25:30,508 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:31,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:31,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 13:25:31,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 13:25:31,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 13:25:31,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:25:31,809 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 155 states. [2018-07-25 13:25:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:32,444 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 13:25:32,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 13:25:32,444 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 308 [2018-07-25 13:25:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:32,445 INFO L225 Difference]: With dead ends: 313 [2018-07-25 13:25:32,445 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 13:25:32,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:25:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 13:25:32,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-25 13:25:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 13:25:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-07-25 13:25:32,450 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-07-25 13:25:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:32,450 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-07-25 13:25:32,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 13:25:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-07-25 13:25:32,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 13:25:32,451 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:32,451 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-07-25 13:25:32,452 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:32,452 INFO L82 PathProgramCache]: Analyzing trace with hash 819215857, now seen corresponding path program 153 times [2018-07-25 13:25:32,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:33,491 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:33,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 13:25:33,491 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 13:25:33,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 13:25:33,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:25:33,494 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 156 states. [2018-07-25 13:25:33,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:33,838 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 13:25:33,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 13:25:33,839 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 13:25:33,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:33,839 INFO L225 Difference]: With dead ends: 315 [2018-07-25 13:25:33,839 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 13:25:33,841 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:25:33,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 13:25:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 13:25:33,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 13:25:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-07-25 13:25:33,844 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-07-25 13:25:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:33,844 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-07-25 13:25:33,844 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 13:25:33,844 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-07-25 13:25:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 13:25:33,845 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:33,845 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-07-25 13:25:33,845 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:33,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1287475499, now seen corresponding path program 154 times [2018-07-25 13:25:33,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:34,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:34,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 13:25:34,908 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 13:25:34,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 13:25:34,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:25:34,911 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 157 states. [2018-07-25 13:25:35,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:35,613 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 13:25:35,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 13:25:35,613 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 312 [2018-07-25 13:25:35,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:35,614 INFO L225 Difference]: With dead ends: 317 [2018-07-25 13:25:35,614 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 13:25:35,615 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:25:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 13:25:35,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-25 13:25:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 13:25:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-07-25 13:25:35,620 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-07-25 13:25:35,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:35,620 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-07-25 13:25:35,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 13:25:35,621 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-07-25 13:25:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 13:25:35,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:35,622 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-07-25 13:25:35,622 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:35,622 INFO L82 PathProgramCache]: Analyzing trace with hash 313425381, now seen corresponding path program 155 times [2018-07-25 13:25:35,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:37,099 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:37,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 13:25:37,099 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 13:25:37,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 13:25:37,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:25:37,103 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 158 states. [2018-07-25 13:25:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:37,610 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 13:25:37,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 13:25:37,610 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 13:25:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:37,611 INFO L225 Difference]: With dead ends: 319 [2018-07-25 13:25:37,611 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 13:25:37,612 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:25:37,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 13:25:37,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 13:25:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 13:25:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-07-25 13:25:37,616 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-07-25 13:25:37,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:37,616 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-07-25 13:25:37,616 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 13:25:37,616 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-07-25 13:25:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 13:25:37,617 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:37,617 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-07-25 13:25:37,617 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:37,618 INFO L82 PathProgramCache]: Analyzing trace with hash 554132511, now seen corresponding path program 156 times [2018-07-25 13:25:37,618 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:38,724 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:38,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 13:25:38,724 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 13:25:38,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 13:25:38,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:25:38,727 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 159 states. [2018-07-25 13:25:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:39,411 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 13:25:39,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 13:25:39,412 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 316 [2018-07-25 13:25:39,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:39,413 INFO L225 Difference]: With dead ends: 321 [2018-07-25 13:25:39,413 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 13:25:39,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:25:39,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 13:25:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-25 13:25:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 13:25:39,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-07-25 13:25:39,421 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-07-25 13:25:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:39,421 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-07-25 13:25:39,421 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 13:25:39,421 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-07-25 13:25:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 13:25:39,422 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:39,423 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-07-25 13:25:39,423 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:39,423 INFO L82 PathProgramCache]: Analyzing trace with hash -54549543, now seen corresponding path program 157 times [2018-07-25 13:25:39,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:40,778 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:40,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 13:25:40,779 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 13:25:40,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 13:25:40,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:25:40,782 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 160 states. [2018-07-25 13:25:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:41,636 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 13:25:41,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 13:25:41,636 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 13:25:41,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:41,637 INFO L225 Difference]: With dead ends: 323 [2018-07-25 13:25:41,637 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 13:25:41,639 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:25:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 13:25:41,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 13:25:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 13:25:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-07-25 13:25:41,642 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-07-25 13:25:41,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:41,642 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-07-25 13:25:41,642 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 13:25:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-07-25 13:25:41,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 13:25:41,643 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:41,643 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-07-25 13:25:41,644 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:41,644 INFO L82 PathProgramCache]: Analyzing trace with hash -882451181, now seen corresponding path program 158 times [2018-07-25 13:25:41,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:42,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:42,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 13:25:42,815 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 13:25:42,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 13:25:42,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:25:42,818 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 161 states. [2018-07-25 13:25:43,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:43,120 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 13:25:43,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 13:25:43,120 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 320 [2018-07-25 13:25:43,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:43,120 INFO L225 Difference]: With dead ends: 325 [2018-07-25 13:25:43,121 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 13:25:43,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:25:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 13:25:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-25 13:25:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 13:25:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-07-25 13:25:43,126 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-07-25 13:25:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:43,126 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-07-25 13:25:43,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 13:25:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-07-25 13:25:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 13:25:43,127 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:43,127 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-07-25 13:25:43,127 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:43,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1926975539, now seen corresponding path program 159 times [2018-07-25 13:25:43,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:44,363 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:44,363 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 13:25:44,363 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 13:25:44,365 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 13:25:44,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:25:44,366 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 162 states. [2018-07-25 13:25:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:45,146 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 13:25:45,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 13:25:45,146 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 13:25:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:45,146 INFO L225 Difference]: With dead ends: 327 [2018-07-25 13:25:45,146 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 13:25:45,148 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:25:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 13:25:45,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 13:25:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 13:25:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-07-25 13:25:45,151 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-07-25 13:25:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:45,151 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-07-25 13:25:45,152 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 13:25:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-07-25 13:25:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 13:25:45,152 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:45,152 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-07-25 13:25:45,153 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:45,153 INFO L82 PathProgramCache]: Analyzing trace with hash -692536313, now seen corresponding path program 160 times [2018-07-25 13:25:45,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:46,356 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:46,357 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 13:25:46,357 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 13:25:46,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 13:25:46,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:25:46,361 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 163 states. [2018-07-25 13:25:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:47,352 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 13:25:47,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 13:25:47,352 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 324 [2018-07-25 13:25:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:47,353 INFO L225 Difference]: With dead ends: 329 [2018-07-25 13:25:47,353 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 13:25:47,354 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:25:47,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 13:25:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-25 13:25:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 13:25:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-07-25 13:25:47,358 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-07-25 13:25:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:47,358 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-07-25 13:25:47,358 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 13:25:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-07-25 13:25:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 13:25:47,360 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:47,360 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-07-25 13:25:47,360 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:47,360 INFO L82 PathProgramCache]: Analyzing trace with hash 192586177, now seen corresponding path program 161 times [2018-07-25 13:25:47,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:48,659 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:48,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 13:25:48,659 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 13:25:48,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 13:25:48,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:25:48,662 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 164 states. [2018-07-25 13:25:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:49,347 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 13:25:49,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 13:25:49,347 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 13:25:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:49,347 INFO L225 Difference]: With dead ends: 331 [2018-07-25 13:25:49,348 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 13:25:49,349 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:25:49,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 13:25:49,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 13:25:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 13:25:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-07-25 13:25:49,352 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-07-25 13:25:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:49,353 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-07-25 13:25:49,353 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 13:25:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-07-25 13:25:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 13:25:49,353 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:49,354 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-07-25 13:25:49,354 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:49,354 INFO L82 PathProgramCache]: Analyzing trace with hash 391774459, now seen corresponding path program 162 times [2018-07-25 13:25:49,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:50,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:50,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 13:25:50,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 13:25:50,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 13:25:50,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:25:50,634 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 165 states. [2018-07-25 13:25:51,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:51,005 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 13:25:51,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 13:25:51,005 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 328 [2018-07-25 13:25:51,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:51,005 INFO L225 Difference]: With dead ends: 333 [2018-07-25 13:25:51,005 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 13:25:51,007 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:25:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 13:25:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 13:25:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 13:25:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-07-25 13:25:51,010 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-07-25 13:25:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:51,011 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-07-25 13:25:51,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 13:25:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-07-25 13:25:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 13:25:51,012 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:51,012 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-07-25 13:25:51,012 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:51,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1461814859, now seen corresponding path program 163 times [2018-07-25 13:25:51,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:52,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:52,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 13:25:52,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 13:25:52,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 13:25:52,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:25:52,381 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 166 states. [2018-07-25 13:25:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:52,927 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 13:25:52,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 13:25:52,927 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 13:25:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:52,927 INFO L225 Difference]: With dead ends: 335 [2018-07-25 13:25:52,927 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 13:25:52,928 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:25:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 13:25:52,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 13:25:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 13:25:52,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-07-25 13:25:52,934 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-07-25 13:25:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:52,935 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-07-25 13:25:52,935 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 13:25:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-07-25 13:25:52,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 13:25:52,936 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:52,937 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-07-25 13:25:52,937 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:52,937 INFO L82 PathProgramCache]: Analyzing trace with hash -349721617, now seen corresponding path program 164 times [2018-07-25 13:25:52,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:54,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:54,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 13:25:54,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 13:25:54,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 13:25:54,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:25:54,390 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 167 states. [2018-07-25 13:25:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:55,271 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 13:25:55,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 13:25:55,271 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 332 [2018-07-25 13:25:55,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:55,272 INFO L225 Difference]: With dead ends: 337 [2018-07-25 13:25:55,272 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 13:25:55,273 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:25:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 13:25:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-25 13:25:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 13:25:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-07-25 13:25:55,277 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-07-25 13:25:55,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:55,277 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-07-25 13:25:55,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 13:25:55,277 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-07-25 13:25:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 13:25:55,278 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:55,278 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-07-25 13:25:55,278 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:55,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1074972759, now seen corresponding path program 165 times [2018-07-25 13:25:55,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:56,607 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:56,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 13:25:56,607 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 13:25:56,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 13:25:56,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:25:56,609 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 168 states. [2018-07-25 13:25:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:57,468 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 13:25:57,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 13:25:57,468 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 13:25:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:57,469 INFO L225 Difference]: With dead ends: 339 [2018-07-25 13:25:57,469 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 13:25:57,470 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:25:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 13:25:57,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 13:25:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 13:25:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-07-25 13:25:57,474 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-07-25 13:25:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:57,474 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-07-25 13:25:57,474 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 13:25:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-07-25 13:25:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 13:25:57,475 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:57,475 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-07-25 13:25:57,475 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:57,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2038349027, now seen corresponding path program 166 times [2018-07-25 13:25:57,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:25:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:25:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:25:58,767 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:25:58,767 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 13:25:58,768 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 13:25:58,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 13:25:58,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:25:58,771 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 169 states. [2018-07-25 13:25:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:25:59,759 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 13:25:59,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 13:25:59,759 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 336 [2018-07-25 13:25:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:25:59,760 INFO L225 Difference]: With dead ends: 341 [2018-07-25 13:25:59,760 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 13:25:59,762 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:25:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 13:25:59,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-25 13:25:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 13:25:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-07-25 13:25:59,766 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-07-25 13:25:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:25:59,766 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-07-25 13:25:59,766 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 13:25:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-07-25 13:25:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 13:25:59,767 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:25:59,767 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-07-25 13:25:59,767 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:25:59,767 INFO L82 PathProgramCache]: Analyzing trace with hash 348380061, now seen corresponding path program 167 times [2018-07-25 13:25:59,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:01,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:01,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 13:26:01,125 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 13:26:01,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 13:26:01,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:26:01,128 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 170 states. [2018-07-25 13:26:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:02,106 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 13:26:02,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 13:26:02,106 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 13:26:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:02,107 INFO L225 Difference]: With dead ends: 343 [2018-07-25 13:26:02,107 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 13:26:02,108 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:26:02,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 13:26:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 13:26:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 13:26:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-07-25 13:26:02,112 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-07-25 13:26:02,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:02,112 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-07-25 13:26:02,112 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 13:26:02,112 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-07-25 13:26:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 13:26:02,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:02,113 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-07-25 13:26:02,113 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:02,113 INFO L82 PathProgramCache]: Analyzing trace with hash -214158377, now seen corresponding path program 168 times [2018-07-25 13:26:02,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:03,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:03,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 13:26:03,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 13:26:03,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 13:26:03,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:26:03,479 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 171 states. [2018-07-25 13:26:04,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:04,507 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 13:26:04,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 13:26:04,507 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 340 [2018-07-25 13:26:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:04,507 INFO L225 Difference]: With dead ends: 345 [2018-07-25 13:26:04,508 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 13:26:04,509 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:26:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 13:26:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-25 13:26:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 13:26:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-07-25 13:26:04,513 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-07-25 13:26:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:04,513 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-07-25 13:26:04,513 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 13:26:04,513 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-07-25 13:26:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 13:26:04,514 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:04,514 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-07-25 13:26:04,514 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:04,514 INFO L82 PathProgramCache]: Analyzing trace with hash 352282001, now seen corresponding path program 169 times [2018-07-25 13:26:04,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:05,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:05,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 13:26:05,917 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 13:26:05,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 13:26:05,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:26:05,921 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 172 states. [2018-07-25 13:26:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:06,933 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 13:26:06,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 13:26:06,933 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 13:26:06,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:06,934 INFO L225 Difference]: With dead ends: 347 [2018-07-25 13:26:06,934 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 13:26:06,935 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:26:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 13:26:06,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 13:26:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 13:26:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-07-25 13:26:06,939 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-07-25 13:26:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:06,939 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-07-25 13:26:06,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 13:26:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-07-25 13:26:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 13:26:06,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:06,940 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-07-25 13:26:06,940 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:06,940 INFO L82 PathProgramCache]: Analyzing trace with hash -759361333, now seen corresponding path program 170 times [2018-07-25 13:26:06,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:08,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:08,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 13:26:08,322 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 13:26:08,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 13:26:08,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:26:08,326 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 173 states. [2018-07-25 13:26:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:09,367 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 13:26:09,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 13:26:09,367 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 344 [2018-07-25 13:26:09,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:09,368 INFO L225 Difference]: With dead ends: 349 [2018-07-25 13:26:09,368 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 13:26:09,370 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:26:09,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 13:26:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-25 13:26:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 13:26:09,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-07-25 13:26:09,373 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-07-25 13:26:09,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:09,373 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-07-25 13:26:09,373 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 13:26:09,373 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-07-25 13:26:09,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 13:26:09,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:09,374 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-07-25 13:26:09,375 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:09,375 INFO L82 PathProgramCache]: Analyzing trace with hash 398251397, now seen corresponding path program 171 times [2018-07-25 13:26:09,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:10,825 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:10,825 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 13:26:10,826 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 13:26:10,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 13:26:10,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:26:10,829 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 174 states. [2018-07-25 13:26:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:11,532 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 13:26:11,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 13:26:11,533 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-25 13:26:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:11,533 INFO L225 Difference]: With dead ends: 351 [2018-07-25 13:26:11,533 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 13:26:11,535 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:26:11,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 13:26:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 13:26:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 13:26:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-07-25 13:26:11,539 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 346 [2018-07-25 13:26:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:11,539 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-07-25 13:26:11,539 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 13:26:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-07-25 13:26:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 13:26:11,540 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:11,540 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1] [2018-07-25 13:26:11,540 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:11,541 INFO L82 PathProgramCache]: Analyzing trace with hash 467555263, now seen corresponding path program 172 times [2018-07-25 13:26:11,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:12,947 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:12,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 13:26:12,947 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 13:26:12,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 13:26:12,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:26:12,951 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 175 states. [2018-07-25 13:26:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:13,295 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 13:26:13,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 13:26:13,295 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 348 [2018-07-25 13:26:13,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:13,296 INFO L225 Difference]: With dead ends: 353 [2018-07-25 13:26:13,296 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 13:26:13,298 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:26:13,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 13:26:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-07-25 13:26:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 13:26:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-07-25 13:26:13,302 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 348 [2018-07-25 13:26:13,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:13,302 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-07-25 13:26:13,302 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 13:26:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-07-25 13:26:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 13:26:13,303 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:13,303 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1] [2018-07-25 13:26:13,303 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:13,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1650906247, now seen corresponding path program 173 times [2018-07-25 13:26:13,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:14,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:14,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 13:26:14,791 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 13:26:14,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 13:26:14,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:26:14,795 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 176 states. [2018-07-25 13:26:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:15,380 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 13:26:15,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 13:26:15,380 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-25 13:26:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:15,381 INFO L225 Difference]: With dead ends: 355 [2018-07-25 13:26:15,381 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 13:26:15,382 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:26:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 13:26:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 13:26:15,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 13:26:15,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-07-25 13:26:15,386 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 350 [2018-07-25 13:26:15,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:15,386 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-07-25 13:26:15,386 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 13:26:15,386 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-07-25 13:26:15,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 13:26:15,387 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:15,387 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1] [2018-07-25 13:26:15,387 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:15,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1677919053, now seen corresponding path program 174 times [2018-07-25 13:26:15,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:16,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:16,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 13:26:16,801 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 13:26:16,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 13:26:16,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:26:16,805 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 177 states. [2018-07-25 13:26:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:18,074 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 13:26:18,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 13:26:18,074 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 352 [2018-07-25 13:26:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:18,075 INFO L225 Difference]: With dead ends: 357 [2018-07-25 13:26:18,075 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 13:26:18,077 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:26:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 13:26:18,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-25 13:26:18,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 13:26:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-07-25 13:26:18,081 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 352 [2018-07-25 13:26:18,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:18,081 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-07-25 13:26:18,081 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 13:26:18,081 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-07-25 13:26:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 13:26:18,082 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:18,082 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1] [2018-07-25 13:26:18,082 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:18,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1867421843, now seen corresponding path program 175 times [2018-07-25 13:26:18,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:19,507 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:19,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 13:26:19,507 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 13:26:19,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 13:26:19,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:26:19,511 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 178 states. [2018-07-25 13:26:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:20,664 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 13:26:20,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 13:26:20,664 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-25 13:26:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:20,665 INFO L225 Difference]: With dead ends: 359 [2018-07-25 13:26:20,665 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 13:26:20,667 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:26:20,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 13:26:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 13:26:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 13:26:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2018-07-25 13:26:20,671 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 354 [2018-07-25 13:26:20,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:20,671 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2018-07-25 13:26:20,671 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 13:26:20,671 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2018-07-25 13:26:20,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 13:26:20,672 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:20,672 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1] [2018-07-25 13:26:20,672 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:20,672 INFO L82 PathProgramCache]: Analyzing trace with hash 703990695, now seen corresponding path program 176 times [2018-07-25 13:26:20,672 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:22,168 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:22,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 13:26:22,169 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 13:26:22,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 13:26:22,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:26:22,171 INFO L87 Difference]: Start difference. First operand 357 states and 357 transitions. Second operand 179 states. [2018-07-25 13:26:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:22,600 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 13:26:22,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 13:26:22,600 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 356 [2018-07-25 13:26:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:22,601 INFO L225 Difference]: With dead ends: 361 [2018-07-25 13:26:22,601 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 13:26:22,602 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:26:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 13:26:22,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-07-25 13:26:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 13:26:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-07-25 13:26:22,606 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 356 [2018-07-25 13:26:22,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:22,606 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-07-25 13:26:22,606 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 13:26:22,606 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-07-25 13:26:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 13:26:22,607 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:22,607 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1] [2018-07-25 13:26:22,607 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:22,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2069722783, now seen corresponding path program 177 times [2018-07-25 13:26:22,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:24,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:24,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 13:26:24,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 13:26:24,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 13:26:24,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:26:24,046 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 180 states. [2018-07-25 13:26:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:24,983 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 13:26:24,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 13:26:24,984 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-25 13:26:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:24,984 INFO L225 Difference]: With dead ends: 363 [2018-07-25 13:26:24,984 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 13:26:24,986 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:26:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 13:26:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 13:26:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 13:26:24,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-07-25 13:26:24,990 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 358 [2018-07-25 13:26:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:24,990 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-07-25 13:26:24,990 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 13:26:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-07-25 13:26:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 13:26:24,991 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:24,991 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1] [2018-07-25 13:26:24,991 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:24,991 INFO L82 PathProgramCache]: Analyzing trace with hash -433684325, now seen corresponding path program 178 times [2018-07-25 13:26:24,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:26,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:26,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 13:26:26,629 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 13:26:26,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 13:26:26,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:26:26,633 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 181 states. [2018-07-25 13:26:27,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:27,879 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 13:26:27,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 13:26:27,879 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 360 [2018-07-25 13:26:27,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:27,880 INFO L225 Difference]: With dead ends: 365 [2018-07-25 13:26:27,880 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 13:26:27,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:26:27,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 13:26:27,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-25 13:26:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 13:26:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-07-25 13:26:27,885 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 360 [2018-07-25 13:26:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:27,886 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-07-25 13:26:27,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 13:26:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-07-25 13:26:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 13:26:27,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:27,887 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1] [2018-07-25 13:26:27,887 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:27,887 INFO L82 PathProgramCache]: Analyzing trace with hash -158756523, now seen corresponding path program 179 times [2018-07-25 13:26:27,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:29,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:29,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 13:26:29,383 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 13:26:29,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 13:26:29,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:26:29,387 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 182 states. [2018-07-25 13:26:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:29,782 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 13:26:29,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 13:26:29,783 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-25 13:26:29,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:29,783 INFO L225 Difference]: With dead ends: 367 [2018-07-25 13:26:29,783 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 13:26:29,785 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:26:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 13:26:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 13:26:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 13:26:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-07-25 13:26:29,789 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 362 [2018-07-25 13:26:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:29,789 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-07-25 13:26:29,789 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 13:26:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-07-25 13:26:29,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 13:26:29,790 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:29,790 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1] [2018-07-25 13:26:29,790 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:29,790 INFO L82 PathProgramCache]: Analyzing trace with hash 2053856143, now seen corresponding path program 180 times [2018-07-25 13:26:29,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:31,297 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:31,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 13:26:31,298 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 13:26:31,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 13:26:31,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:26:31,302 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 183 states. [2018-07-25 13:26:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:32,736 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 13:26:32,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 13:26:32,736 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 364 [2018-07-25 13:26:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:32,737 INFO L225 Difference]: With dead ends: 369 [2018-07-25 13:26:32,737 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 13:26:32,739 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:26:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 13:26:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-25 13:26:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 13:26:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-07-25 13:26:32,742 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 364 [2018-07-25 13:26:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:32,742 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-07-25 13:26:32,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 13:26:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-07-25 13:26:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 13:26:32,743 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:32,743 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1] [2018-07-25 13:26:32,744 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1929150647, now seen corresponding path program 181 times [2018-07-25 13:26:32,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:34,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:34,279 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 13:26:34,279 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 13:26:34,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 13:26:34,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:26:34,281 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 184 states. [2018-07-25 13:26:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:34,780 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 13:26:34,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 13:26:34,781 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-25 13:26:34,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:34,781 INFO L225 Difference]: With dead ends: 371 [2018-07-25 13:26:34,781 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 13:26:34,782 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:26:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 13:26:34,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 13:26:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 13:26:34,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2018-07-25 13:26:34,786 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 366 [2018-07-25 13:26:34,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:34,786 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2018-07-25 13:26:34,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 13:26:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2018-07-25 13:26:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 13:26:34,787 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:34,787 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1] [2018-07-25 13:26:34,787 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:34,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1512152195, now seen corresponding path program 182 times [2018-07-25 13:26:34,788 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:36,320 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:36,320 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 13:26:36,321 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 13:26:36,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 13:26:36,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:26:36,324 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 185 states. [2018-07-25 13:26:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:37,826 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 13:26:37,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 13:26:37,826 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 368 [2018-07-25 13:26:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:37,826 INFO L225 Difference]: With dead ends: 373 [2018-07-25 13:26:37,826 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 13:26:37,828 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:26:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 13:26:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-25 13:26:37,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 13:26:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-07-25 13:26:37,832 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 368 [2018-07-25 13:26:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:37,832 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-07-25 13:26:37,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 13:26:37,832 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-07-25 13:26:37,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 13:26:37,833 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:37,833 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1] [2018-07-25 13:26:37,833 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:37,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1479365437, now seen corresponding path program 183 times [2018-07-25 13:26:37,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:39,574 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:39,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 13:26:39,575 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 13:26:39,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 13:26:39,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:26:39,579 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 186 states. [2018-07-25 13:26:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:40,165 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 13:26:40,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 13:26:40,165 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-25 13:26:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:40,166 INFO L225 Difference]: With dead ends: 375 [2018-07-25 13:26:40,166 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 13:26:40,168 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:26:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 13:26:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 13:26:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 13:26:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-07-25 13:26:40,173 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 370 [2018-07-25 13:26:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:40,173 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-07-25 13:26:40,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 13:26:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-07-25 13:26:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 13:26:40,174 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:40,174 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1] [2018-07-25 13:26:40,174 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:40,175 INFO L82 PathProgramCache]: Analyzing trace with hash 36062071, now seen corresponding path program 184 times [2018-07-25 13:26:40,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:42,015 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:42,015 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 13:26:42,016 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 13:26:42,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 13:26:42,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:26:42,019 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 187 states. [2018-07-25 13:26:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:43,511 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 13:26:43,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 13:26:43,512 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 372 [2018-07-25 13:26:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:43,512 INFO L225 Difference]: With dead ends: 377 [2018-07-25 13:26:43,512 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 13:26:43,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:26:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 13:26:43,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-07-25 13:26:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 13:26:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-07-25 13:26:43,517 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 372 [2018-07-25 13:26:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:43,517 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-07-25 13:26:43,517 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 13:26:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-07-25 13:26:43,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 13:26:43,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:43,518 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1] [2018-07-25 13:26:43,518 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:43,518 INFO L82 PathProgramCache]: Analyzing trace with hash 295963953, now seen corresponding path program 185 times [2018-07-25 13:26:43,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:45,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:45,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 13:26:45,130 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 13:26:45,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 13:26:45,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:26:45,135 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 188 states. [2018-07-25 13:26:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:45,709 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 13:26:45,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 13:26:45,709 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-25 13:26:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:45,710 INFO L225 Difference]: With dead ends: 379 [2018-07-25 13:26:45,710 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 13:26:45,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:26:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 13:26:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 13:26:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 13:26:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-07-25 13:26:45,716 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 374 [2018-07-25 13:26:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:45,716 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-07-25 13:26:45,716 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 13:26:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-07-25 13:26:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 13:26:45,717 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:45,717 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1] [2018-07-25 13:26:45,717 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:45,717 INFO L82 PathProgramCache]: Analyzing trace with hash 953569387, now seen corresponding path program 186 times [2018-07-25 13:26:45,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:47,462 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:47,463 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 13:26:47,463 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 13:26:47,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 13:26:47,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:26:47,466 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 189 states. [2018-07-25 13:26:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:48,494 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 13:26:48,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 13:26:48,494 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 376 [2018-07-25 13:26:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:48,494 INFO L225 Difference]: With dead ends: 381 [2018-07-25 13:26:48,494 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 13:26:48,496 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:26:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 13:26:48,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-25 13:26:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 13:26:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-07-25 13:26:48,500 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 376 [2018-07-25 13:26:48,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:48,500 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-07-25 13:26:48,500 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 13:26:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-07-25 13:26:48,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 13:26:48,501 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:48,501 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1] [2018-07-25 13:26:48,502 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:48,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1552198949, now seen corresponding path program 187 times [2018-07-25 13:26:48,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:50,165 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:50,165 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 13:26:50,166 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 13:26:50,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 13:26:50,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:26:50,170 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 190 states. [2018-07-25 13:26:51,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:51,880 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 13:26:51,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 13:26:51,880 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-25 13:26:51,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:51,881 INFO L225 Difference]: With dead ends: 383 [2018-07-25 13:26:51,881 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 13:26:51,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:26:51,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 13:26:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 13:26:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 13:26:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2018-07-25 13:26:51,886 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 378 [2018-07-25 13:26:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:51,886 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2018-07-25 13:26:51,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 13:26:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2018-07-25 13:26:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 13:26:51,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:51,887 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1] [2018-07-25 13:26:51,887 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:51,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1309590367, now seen corresponding path program 188 times [2018-07-25 13:26:51,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:53,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:53,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 13:26:53,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 13:26:53,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 13:26:53,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:26:53,546 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 191 states. [2018-07-25 13:26:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:54,246 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 13:26:54,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 13:26:54,246 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 380 [2018-07-25 13:26:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:54,247 INFO L225 Difference]: With dead ends: 385 [2018-07-25 13:26:54,247 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 13:26:54,249 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:26:54,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 13:26:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-07-25 13:26:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 13:26:54,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-07-25 13:26:54,252 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 380 [2018-07-25 13:26:54,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:54,252 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-07-25 13:26:54,252 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 13:26:54,253 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-07-25 13:26:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 13:26:54,253 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:54,254 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1] [2018-07-25 13:26:54,254 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:54,254 INFO L82 PathProgramCache]: Analyzing trace with hash 90977049, now seen corresponding path program 189 times [2018-07-25 13:26:54,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:56,021 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:56,021 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 13:26:56,021 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 13:26:56,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 13:26:56,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:26:56,025 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 192 states. [2018-07-25 13:26:56,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:56,720 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 13:26:56,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 13:26:56,721 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-25 13:26:56,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:56,721 INFO L225 Difference]: With dead ends: 387 [2018-07-25 13:26:56,721 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 13:26:56,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:26:56,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 13:26:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 13:26:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 13:26:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-07-25 13:26:56,727 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 382 [2018-07-25 13:26:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:56,727 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-07-25 13:26:56,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 13:26:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-07-25 13:26:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 13:26:56,728 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:56,728 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1] [2018-07-25 13:26:56,728 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:56,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1529650259, now seen corresponding path program 190 times [2018-07-25 13:26:56,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:26:58,494 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:58,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 13:26:58,495 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 13:26:58,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 13:26:58,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:26:58,497 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 193 states. [2018-07-25 13:26:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:59,907 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 13:26:59,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 13:26:59,908 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 384 [2018-07-25 13:26:59,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:59,908 INFO L225 Difference]: With dead ends: 389 [2018-07-25 13:26:59,908 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 13:26:59,910 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:26:59,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 13:26:59,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-25 13:26:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 13:26:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-07-25 13:26:59,913 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 384 [2018-07-25 13:26:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:59,913 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-07-25 13:26:59,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 13:26:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-07-25 13:26:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 13:26:59,915 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:59,915 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1] [2018-07-25 13:26:59,915 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:59,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1115135757, now seen corresponding path program 191 times [2018-07-25 13:26:59,916 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:01,656 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:01,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 13:27:01,657 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 13:27:01,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 13:27:01,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:27:01,662 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 194 states. [2018-07-25 13:27:03,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:03,474 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 13:27:03,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 13:27:03,474 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-25 13:27:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:03,474 INFO L225 Difference]: With dead ends: 391 [2018-07-25 13:27:03,474 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 13:27:03,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:27:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 13:27:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 13:27:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 13:27:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-07-25 13:27:03,483 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 386 [2018-07-25 13:27:03,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:03,483 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-07-25 13:27:03,483 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 13:27:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-07-25 13:27:03,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 13:27:03,485 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:03,485 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1] [2018-07-25 13:27:03,485 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:03,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2096309433, now seen corresponding path program 192 times [2018-07-25 13:27:03,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:05,261 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:05,261 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 13:27:05,261 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 13:27:05,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 13:27:05,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:27:05,266 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 195 states. [2018-07-25 13:27:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:06,898 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 13:27:06,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 13:27:06,898 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 388 [2018-07-25 13:27:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:06,899 INFO L225 Difference]: With dead ends: 393 [2018-07-25 13:27:06,899 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 13:27:06,901 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:27:06,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 13:27:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-07-25 13:27:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 13:27:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-07-25 13:27:06,905 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 388 [2018-07-25 13:27:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:06,905 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-07-25 13:27:06,906 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 13:27:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-07-25 13:27:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 13:27:06,907 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:06,907 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1] [2018-07-25 13:27:06,907 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:06,907 INFO L82 PathProgramCache]: Analyzing trace with hash -213651199, now seen corresponding path program 193 times [2018-07-25 13:27:06,907 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:08,718 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:08,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 13:27:08,718 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 13:27:08,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 13:27:08,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:27:08,722 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 196 states. [2018-07-25 13:27:09,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:09,857 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 13:27:09,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 13:27:09,857 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-25 13:27:09,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:09,858 INFO L225 Difference]: With dead ends: 395 [2018-07-25 13:27:09,858 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 13:27:09,860 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:27:09,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 13:27:09,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 13:27:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 13:27:09,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2018-07-25 13:27:09,863 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 390 [2018-07-25 13:27:09,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:09,863 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2018-07-25 13:27:09,863 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 13:27:09,864 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2018-07-25 13:27:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 13:27:09,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:09,865 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1] [2018-07-25 13:27:09,865 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:09,865 INFO L82 PathProgramCache]: Analyzing trace with hash 839680059, now seen corresponding path program 194 times [2018-07-25 13:27:09,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:11,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:11,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 13:27:11,780 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 13:27:11,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 13:27:11,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:27:11,785 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand 197 states. [2018-07-25 13:27:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:12,750 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 13:27:12,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 13:27:12,750 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 392 [2018-07-25 13:27:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:12,751 INFO L225 Difference]: With dead ends: 397 [2018-07-25 13:27:12,751 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 13:27:12,753 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:27:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 13:27:12,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-25 13:27:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 13:27:12,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-07-25 13:27:12,757 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 392 [2018-07-25 13:27:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:12,757 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-07-25 13:27:12,757 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 13:27:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-07-25 13:27:12,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 13:27:12,758 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:12,758 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1] [2018-07-25 13:27:12,759 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:12,759 INFO L82 PathProgramCache]: Analyzing trace with hash -521262859, now seen corresponding path program 195 times [2018-07-25 13:27:12,759 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:14,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:14,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 13:27:14,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 13:27:14,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 13:27:14,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:27:14,634 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 198 states. [2018-07-25 13:27:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:15,341 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 13:27:15,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 13:27:15,342 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-25 13:27:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:15,342 INFO L225 Difference]: With dead ends: 399 [2018-07-25 13:27:15,342 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 13:27:15,345 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:27:15,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 13:27:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 13:27:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 13:27:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-07-25 13:27:15,349 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 394 [2018-07-25 13:27:15,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:15,349 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-07-25 13:27:15,349 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 13:27:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-07-25 13:27:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 13:27:15,350 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:15,350 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1] [2018-07-25 13:27:15,350 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:15,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1577618223, now seen corresponding path program 196 times [2018-07-25 13:27:15,350 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:17,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:17,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 13:27:17,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 13:27:17,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 13:27:17,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:27:17,348 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 199 states. [2018-07-25 13:27:18,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:18,133 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 13:27:18,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 13:27:18,133 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 396 [2018-07-25 13:27:18,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:18,134 INFO L225 Difference]: With dead ends: 401 [2018-07-25 13:27:18,134 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 13:27:18,136 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:27:18,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 13:27:18,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-07-25 13:27:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 13:27:18,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-07-25 13:27:18,140 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 396 [2018-07-25 13:27:18,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:18,140 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-07-25 13:27:18,140 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 13:27:18,140 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-07-25 13:27:18,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 13:27:18,141 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:18,141 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1] [2018-07-25 13:27:18,142 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:18,142 INFO L82 PathProgramCache]: Analyzing trace with hash -32291095, now seen corresponding path program 197 times [2018-07-25 13:27:18,142 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:20,071 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:20,071 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 13:27:20,072 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 13:27:20,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 13:27:20,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:27:20,075 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 200 states. [2018-07-25 13:27:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:20,877 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 13:27:20,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 13:27:20,877 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-25 13:27:20,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:20,878 INFO L225 Difference]: With dead ends: 403 [2018-07-25 13:27:20,878 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 13:27:20,880 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:27:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 13:27:20,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 13:27:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 13:27:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2018-07-25 13:27:20,884 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 398 [2018-07-25 13:27:20,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:20,884 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2018-07-25 13:27:20,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 13:27:20,884 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2018-07-25 13:27:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 13:27:20,885 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:20,885 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1] [2018-07-25 13:27:20,885 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:20,885 INFO L82 PathProgramCache]: Analyzing trace with hash -966919133, now seen corresponding path program 198 times [2018-07-25 13:27:20,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:22,977 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:22,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 13:27:22,978 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 13:27:22,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 13:27:22,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:27:22,981 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 201 states. [2018-07-25 13:27:24,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:24,252 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 13:27:24,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 13:27:24,252 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 400 [2018-07-25 13:27:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:24,253 INFO L225 Difference]: With dead ends: 405 [2018-07-25 13:27:24,253 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 13:27:24,254 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:27:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 13:27:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-25 13:27:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 13:27:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-07-25 13:27:24,258 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 400 [2018-07-25 13:27:24,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:24,258 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-07-25 13:27:24,258 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 13:27:24,258 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-07-25 13:27:24,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 13:27:24,259 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:24,259 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1] [2018-07-25 13:27:24,260 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:24,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1496298787, now seen corresponding path program 199 times [2018-07-25 13:27:24,260 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:26,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:26,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 13:27:26,297 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 13:27:26,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 13:27:26,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:27:26,302 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 202 states. [2018-07-25 13:27:28,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:28,131 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 13:27:28,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 13:27:28,132 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-25 13:27:28,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:28,132 INFO L225 Difference]: With dead ends: 407 [2018-07-25 13:27:28,132 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 13:27:28,135 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:27:28,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 13:27:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 13:27:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 13:27:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 405 transitions. [2018-07-25 13:27:28,138 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 405 transitions. Word has length 402 [2018-07-25 13:27:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:28,139 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 405 transitions. [2018-07-25 13:27:28,139 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 13:27:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 405 transitions. [2018-07-25 13:27:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 13:27:28,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:28,140 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1] [2018-07-25 13:27:28,140 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:28,140 INFO L82 PathProgramCache]: Analyzing trace with hash 870961943, now seen corresponding path program 200 times [2018-07-25 13:27:28,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:30,209 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:30,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 13:27:30,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 13:27:30,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 13:27:30,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:27:30,215 INFO L87 Difference]: Start difference. First operand 405 states and 405 transitions. Second operand 203 states. [2018-07-25 13:27:32,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:32,528 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 13:27:32,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 13:27:32,529 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 404 [2018-07-25 13:27:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:32,529 INFO L225 Difference]: With dead ends: 409 [2018-07-25 13:27:32,529 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 13:27:32,532 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:27:32,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 13:27:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-07-25 13:27:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 13:27:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-07-25 13:27:32,536 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-07-25 13:27:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:32,536 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-07-25 13:27:32,536 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 13:27:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-07-25 13:27:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 13:27:32,538 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:32,538 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1] [2018-07-25 13:27:32,538 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:32,538 INFO L82 PathProgramCache]: Analyzing trace with hash -524143407, now seen corresponding path program 201 times [2018-07-25 13:27:32,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:34,817 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:34,818 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:34,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 13:27:34,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 13:27:34,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 13:27:34,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:27:34,824 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 204 states. [2018-07-25 13:27:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:37,218 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 13:27:37,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 13:27:37,218 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-25 13:27:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:37,219 INFO L225 Difference]: With dead ends: 411 [2018-07-25 13:27:37,219 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 13:27:37,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:27:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 13:27:37,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 13:27:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 13:27:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-07-25 13:27:37,225 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 406 [2018-07-25 13:27:37,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:37,225 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-07-25 13:27:37,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 13:27:37,226 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-07-25 13:27:37,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 13:27:37,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:37,227 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1] [2018-07-25 13:27:37,227 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:37,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1190588405, now seen corresponding path program 202 times [2018-07-25 13:27:37,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:39,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:39,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 13:27:39,322 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 13:27:39,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 13:27:39,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:27:39,327 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 205 states. [2018-07-25 13:27:40,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:40,536 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 13:27:40,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 13:27:40,536 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 408 [2018-07-25 13:27:40,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:40,537 INFO L225 Difference]: With dead ends: 413 [2018-07-25 13:27:40,537 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 13:27:40,540 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:27:40,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 13:27:40,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-25 13:27:40,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 13:27:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-07-25 13:27:40,544 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 408 [2018-07-25 13:27:40,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:40,545 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-07-25 13:27:40,545 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 13:27:40,545 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-07-25 13:27:40,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 13:27:40,546 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:40,546 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1] [2018-07-25 13:27:40,546 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:40,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1694104379, now seen corresponding path program 203 times [2018-07-25 13:27:40,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:42,991 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:42,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 13:27:42,991 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 13:27:42,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 13:27:42,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:27:42,994 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 206 states. [2018-07-25 13:27:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:43,895 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 13:27:43,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 13:27:43,895 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-25 13:27:43,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:43,895 INFO L225 Difference]: With dead ends: 415 [2018-07-25 13:27:43,896 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 13:27:43,897 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:27:43,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 13:27:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 13:27:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 13:27:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-07-25 13:27:43,902 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 410 [2018-07-25 13:27:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:43,902 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-07-25 13:27:43,902 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 13:27:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-07-25 13:27:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 13:27:43,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:43,904 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1] [2018-07-25 13:27:43,904 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:43,904 INFO L82 PathProgramCache]: Analyzing trace with hash -241650945, now seen corresponding path program 204 times [2018-07-25 13:27:43,904 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:46,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:46,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 13:27:46,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 13:27:46,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 13:27:46,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:27:46,212 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 207 states. [2018-07-25 13:27:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:47,941 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 13:27:47,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 13:27:47,941 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 412 [2018-07-25 13:27:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:47,942 INFO L225 Difference]: With dead ends: 417 [2018-07-25 13:27:47,942 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 13:27:47,944 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:27:47,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 13:27:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-07-25 13:27:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 13:27:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-07-25 13:27:47,949 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 412 [2018-07-25 13:27:47,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:47,949 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-07-25 13:27:47,949 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 13:27:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-07-25 13:27:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 13:27:47,950 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:47,950 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1] [2018-07-25 13:27:47,951 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:47,951 INFO L82 PathProgramCache]: Analyzing trace with hash -298272071, now seen corresponding path program 205 times [2018-07-25 13:27:47,951 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:50,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:50,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 13:27:50,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 13:27:50,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 13:27:50,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:27:50,041 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 208 states. [2018-07-25 13:27:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:52,221 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-25 13:27:52,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 13:27:52,222 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-25 13:27:52,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:52,222 INFO L225 Difference]: With dead ends: 419 [2018-07-25 13:27:52,222 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 13:27:52,225 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:27:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 13:27:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 13:27:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 13:27:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 417 transitions. [2018-07-25 13:27:52,229 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 417 transitions. Word has length 414 [2018-07-25 13:27:52,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:52,229 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 417 transitions. [2018-07-25 13:27:52,229 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 13:27:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 417 transitions. [2018-07-25 13:27:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 13:27:52,231 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:52,231 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1] [2018-07-25 13:27:52,231 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:52,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1123400691, now seen corresponding path program 206 times [2018-07-25 13:27:52,231 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:54,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:54,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 13:27:54,373 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 13:27:54,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 13:27:54,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:27:54,378 INFO L87 Difference]: Start difference. First operand 417 states and 417 transitions. Second operand 209 states. [2018-07-25 13:27:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:55,375 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-25 13:27:55,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 13:27:55,375 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 416 [2018-07-25 13:27:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:55,376 INFO L225 Difference]: With dead ends: 421 [2018-07-25 13:27:55,376 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 13:27:55,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:27:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 13:27:55,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-25 13:27:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 13:27:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-07-25 13:27:55,382 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 416 [2018-07-25 13:27:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:55,383 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-07-25 13:27:55,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 13:27:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-07-25 13:27:55,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 13:27:55,384 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:55,384 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1] [2018-07-25 13:27:55,384 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:55,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1551324845, now seen corresponding path program 207 times [2018-07-25 13:27:55,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:27:57,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:57,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 13:27:57,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 13:27:57,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 13:27:57,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:27:57,455 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 210 states. [2018-07-25 13:27:59,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:59,552 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-25 13:27:59,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 13:27:59,552 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-25 13:27:59,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:59,553 INFO L225 Difference]: With dead ends: 423 [2018-07-25 13:27:59,553 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 13:27:59,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:27:59,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 13:27:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 13:27:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 13:27:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2018-07-25 13:27:59,560 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 418 [2018-07-25 13:27:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:59,560 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2018-07-25 13:27:59,560 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 13:27:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2018-07-25 13:27:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 13:27:59,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:59,561 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1] [2018-07-25 13:27:59,561 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:59,561 INFO L82 PathProgramCache]: Analyzing trace with hash 469576423, now seen corresponding path program 208 times [2018-07-25 13:27:59,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:01,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:01,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 13:28:01,742 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 13:28:01,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 13:28:01,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:28:01,747 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand 211 states. [2018-07-25 13:28:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:02,941 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-25 13:28:02,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 13:28:02,941 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 420 [2018-07-25 13:28:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:02,942 INFO L225 Difference]: With dead ends: 425 [2018-07-25 13:28:02,942 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 13:28:02,945 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:28:02,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 13:28:02,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-07-25 13:28:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 13:28:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-07-25 13:28:02,950 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 420 [2018-07-25 13:28:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:02,950 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-07-25 13:28:02,950 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 13:28:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-07-25 13:28:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 13:28:02,952 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:02,952 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1] [2018-07-25 13:28:02,952 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:02,952 INFO L82 PathProgramCache]: Analyzing trace with hash 291428513, now seen corresponding path program 209 times [2018-07-25 13:28:02,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:05,490 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:05,490 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 13:28:05,490 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 13:28:05,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 13:28:05,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:28:05,495 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 212 states. [2018-07-25 13:28:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:07,123 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-25 13:28:07,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 13:28:07,123 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-25 13:28:07,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:07,124 INFO L225 Difference]: With dead ends: 427 [2018-07-25 13:28:07,124 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 13:28:07,127 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:28:07,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 13:28:07,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 13:28:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 13:28:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 425 transitions. [2018-07-25 13:28:07,130 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 425 transitions. Word has length 422 [2018-07-25 13:28:07,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:07,131 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 425 transitions. [2018-07-25 13:28:07,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 13:28:07,131 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 425 transitions. [2018-07-25 13:28:07,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 13:28:07,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:07,132 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1] [2018-07-25 13:28:07,132 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:07,132 INFO L82 PathProgramCache]: Analyzing trace with hash 889978843, now seen corresponding path program 210 times [2018-07-25 13:28:07,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:09,367 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:09,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 13:28:09,368 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 13:28:09,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 13:28:09,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:28:09,373 INFO L87 Difference]: Start difference. First operand 425 states and 425 transitions. Second operand 213 states. [2018-07-25 13:28:11,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:11,817 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-25 13:28:11,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 13:28:11,817 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 424 [2018-07-25 13:28:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:11,817 INFO L225 Difference]: With dead ends: 429 [2018-07-25 13:28:11,817 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 13:28:11,820 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:28:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 13:28:11,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-25 13:28:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 13:28:11,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-07-25 13:28:11,824 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 424 [2018-07-25 13:28:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:11,824 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-07-25 13:28:11,824 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 13:28:11,824 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-07-25 13:28:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 13:28:11,825 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:11,825 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1] [2018-07-25 13:28:11,826 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:11,826 INFO L82 PathProgramCache]: Analyzing trace with hash 571228309, now seen corresponding path program 211 times [2018-07-25 13:28:11,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:14,244 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:14,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 13:28:14,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 13:28:14,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 13:28:14,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:28:14,249 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 214 states. [2018-07-25 13:28:15,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:15,877 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-25 13:28:15,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 13:28:15,877 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-07-25 13:28:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:15,878 INFO L225 Difference]: With dead ends: 431 [2018-07-25 13:28:15,878 INFO L226 Difference]: Without dead ends: 429 [2018-07-25 13:28:15,880 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:28:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-25 13:28:15,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-25 13:28:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 13:28:15,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 429 transitions. [2018-07-25 13:28:15,885 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 429 transitions. Word has length 426 [2018-07-25 13:28:15,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:15,885 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 429 transitions. [2018-07-25 13:28:15,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 13:28:15,885 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 429 transitions. [2018-07-25 13:28:15,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 13:28:15,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:15,886 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1, 1] [2018-07-25 13:28:15,886 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:15,886 INFO L82 PathProgramCache]: Analyzing trace with hash -805356849, now seen corresponding path program 212 times [2018-07-25 13:28:15,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:18,212 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:18,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 13:28:18,212 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 13:28:18,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 13:28:18,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:28:18,216 INFO L87 Difference]: Start difference. First operand 429 states and 429 transitions. Second operand 215 states. Received shutdown request... [2018-07-25 13:28:19,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 13:28:19,057 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:28:19,063 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:28:19,064 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:28:19 BoogieIcfgContainer [2018-07-25 13:28:19,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:28:19,065 INFO L168 Benchmark]: Toolchain (without parser) took 253328.02 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: -630.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-25 13:28:19,069 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:28:19,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:28:19,069 INFO L168 Benchmark]: Boogie Preprocessor took 19.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:28:19,069 INFO L168 Benchmark]: RCFGBuilder took 229.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:28:19,070 INFO L168 Benchmark]: TraceAbstraction took 253032.04 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: -640.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-25 13:28:19,072 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 0.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 229.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253032.04 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: -640.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 42). Cancelled while BasicCegarLoop was constructing difference of abstraction (429states) and interpolant automaton (currently 153 states, 215 states before enhancement), while ReachableStatesComputation was computing reachable states (302 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 252.9s OverallTime, 213 OverallIterations, 213 TraceHistogramMax, 88.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 850 SDtfs, 0 SDslu, 33593 SDs, 0 SdLazy, 33806 SolverSat, 429 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23004 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 22791 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=429occurred in iteration=212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 212 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 59.8s SatisfiabilityAnalysisTime, 92.8s InterpolantComputationTime, 46008 NumberOfCodeBlocks, 46008 NumberOfCodeBlocksAsserted, 213 NumberOfCheckSat, 45795 ConstructedInterpolants, 0 QuantifiedInterpolants, 39109569 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 213 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3221128 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-28-19-081.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-28-19-081.csv Completed graceful shutdown