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/nested.c_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:47:22,656 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:47:22,660 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:47:22,679 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:47:22,680 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:47:22,682 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:47:22,683 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:47:22,685 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:47:22,689 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:47:22,695 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:47:22,698 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-25 08:47:22,737 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:47:22,762 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:47:22,762 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:47:22,764 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:47:22,764 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:47:22,764 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:47:22,765 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:47:22,765 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:47:22,765 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:47:22,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:47:22,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:47:22,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:47:22,867 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:47:22,868 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:47:22,869 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.c_4.bpl [2018-07-25 08:47:22,869 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.c_4.bpl' [2018-07-25 08:47:22,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:47:22,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:47:22,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:47:22,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:47:22,938 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:47:22,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/1) ... [2018-07-25 08:47:22,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/1) ... [2018-07-25 08:47:22,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:47:22,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:47:22,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:47:22,981 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:47:22,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/1) ... [2018-07-25 08:47:22,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/1) ... [2018-07-25 08:47:22,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/1) ... [2018-07-25 08:47:22,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/1) ... [2018-07-25 08:47:22,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/1) ... [2018-07-25 08:47:23,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/1) ... [2018-07-25 08:47:23,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/1) ... [2018-07-25 08:47:23,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:47:23,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:47:23,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:47:23,005 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:47:23,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/1) ... [2018-07-25 08:47:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:47:23,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:47:23,258 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:47:23,259 INFO L202 PluginConnector]: Adding new model nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:47:23 BoogieIcfgContainer [2018-07-25 08:47:23,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:47:23,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:47:23,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:47:23,265 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:47:23,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:47:22" (1/2) ... [2018-07-25 08:47:23,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d73843f and model type nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:47:23, skipping insertion in model container [2018-07-25 08:47:23,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:47:23" (2/2) ... [2018-07-25 08:47:23,271 INFO L112 eAbstractionObserver]: Analyzing ICFG nested.c_4.bpl [2018-07-25 08:47:23,284 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:47:23,296 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:47:23,352 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:47:23,354 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:47:23,354 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:47:23,354 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:47:23,355 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:47:23,355 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:47:23,355 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:47:23,355 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:47:23,355 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:47:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:47:23,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:47:23,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:23,393 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:47:23,395 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:23,400 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 08:47:23,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:23,496 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:47:23,496 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:47:23,501 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:47:23,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:47:23,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:47:23,517 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:47:23,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:23,548 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 08:47:23,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:47:23,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 08:47:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:23,562 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:47:23,562 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:47:23,566 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:47:23,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:47:23,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:47:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:47:23,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:47:23,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:47:23,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:23,604 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:47:23,604 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:47:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:47:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:47:23,605 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:23,605 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:47:23,605 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:23,606 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-25 08:47:23,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:23,658 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:23,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:47:23,661 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:47:23,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:47:23,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:47:23,662 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-25 08:47:23,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:23,689 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:47:23,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:47:23,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:47:23,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:23,691 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:47:23,691 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:47:23,692 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:47:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:47:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:47:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:47:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:47:23,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:47:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:23,696 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:47:23,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:47:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:47:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:47:23,697 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:23,697 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:47:23,698 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:23,698 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-25 08:47:23,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:23,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:23,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:23,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:47:23,742 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:47:23,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:47:23,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:47:23,743 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-07-25 08:47:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:23,762 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:47:23,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:47:23,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:47:23,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:23,764 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:47:23,764 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:47:23,765 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:47:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:47:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:47:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:47:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:47:23,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 08:47:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:23,769 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:47:23,769 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:47:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:47:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:47:23,770 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:23,770 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 08:47:23,771 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:23,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-07-25 08:47:23,771 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:23,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:23,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:47:23,817 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:47:23,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:47:23,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:47:23,818 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-07-25 08:47:23,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:23,839 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:47:23,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:47:23,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:47:23,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:23,841 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:47:23,841 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:47:23,841 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:47:23,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:47:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:47:23,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:47:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:47:23,846 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 08:47:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:23,846 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:47:23,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:47:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:47:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:47:23,847 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:23,847 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 08:47:23,847 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:23,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-07-25 08:47:23,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:23,888 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:23,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:47:23,889 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:47:23,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:47:23,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:47:23,890 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-07-25 08:47:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:23,910 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:47:23,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:47:23,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:47:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:23,911 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:47:23,911 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:47:23,912 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:47:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:47:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:47:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:47:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:47:23,917 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 08:47:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:23,917 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:47:23,917 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:47:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:47:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:47:23,918 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:23,919 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 08:47:23,919 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:23,919 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-07-25 08:47:23,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,013 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:47:24,014 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:47:24,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:47:24,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:47:24,015 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-07-25 08:47:24,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,036 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:47:24,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:47:24,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:47:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,038 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:47:24,038 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:47:24,039 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:47:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:47:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:47:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:47:24,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:47:24,044 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-25 08:47:24,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,044 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:47:24,045 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:47:24,045 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:47:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:47:24,045 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,046 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-25 08:47:24,046 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,046 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-07-25 08:47:24,046 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:47:24,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:47:24,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:47:24,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:47:24,134 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-07-25 08:47:24,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,178 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:47:24,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:47:24,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:47:24,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,180 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:47:24,180 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:47:24,184 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:47:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:47:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:47:24,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:47:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:47:24,195 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-25 08:47:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,196 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:47:24,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:47:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:47:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:47:24,198 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,198 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-25 08:47:24,199 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,199 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-07-25 08:47:24,199 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:47:24,266 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:47:24,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:47:24,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:47:24,267 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-07-25 08:47:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,286 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:47:24,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:47:24,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:47:24,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,288 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:47:24,288 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:47:24,289 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:47:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:47:24,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:47:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:47:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:47:24,294 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-25 08:47:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,294 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:47:24,294 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:47:24,294 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:47:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:47:24,295 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,295 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-25 08:47:24,296 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,296 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-07-25 08:47:24,296 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:47:24,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:47:24,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:47:24,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:47:24,344 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-07-25 08:47:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,366 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:47:24,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:47:24,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 08:47:24,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,368 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:47:24,368 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:47:24,369 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:47:24,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:47:24,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:47:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:47:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:47:24,377 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-25 08:47:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,377 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:47:24,377 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:47:24,377 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:47:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:47:24,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,380 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-25 08:47:24,380 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-07-25 08:47:24,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:47:24,470 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:47:24,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:47:24,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:47:24,472 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-07-25 08:47:24,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,511 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:47:24,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:47:24,513 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:47:24,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,513 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:47:24,514 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:47:24,515 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:47:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:47:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:47:24,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:47:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:47:24,530 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-25 08:47:24,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,530 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:47:24,530 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:47:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:47:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:47:24,531 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,533 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-25 08:47:24,534 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-07-25 08:47:24,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:47:24,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:47:24,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:47:24,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:47:24,599 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-07-25 08:47:24,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,621 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:47:24,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:47:24,622 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-25 08:47:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,623 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:47:24,623 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:47:24,624 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:47:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:47:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:47:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:47:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:47:24,629 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-25 08:47:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,629 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:47:24,630 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:47:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:47:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:47:24,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,631 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-25 08:47:24,631 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,631 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-07-25 08:47:24,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,715 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,715 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:47:24,715 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:47:24,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:47:24,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:47:24,717 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-07-25 08:47:24,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,737 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:47:24,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:47:24,738 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:47:24,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,739 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:47:24,739 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:47:24,740 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:47:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:47:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:47:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:47:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:47:24,750 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-25 08:47:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,751 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:47:24,751 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:47:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:47:24,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:47:24,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,752 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-25 08:47:24,753 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-07-25 08:47:24,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,805 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:47:24,806 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:47:24,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:47:24,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:47:24,807 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-07-25 08:47:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,834 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:47:24,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:47:24,835 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-25 08:47:24,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,835 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:47:24,836 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:47:24,836 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:47:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:47:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:47:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:47:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:47:24,842 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-25 08:47:24,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,842 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:47:24,842 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:47:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:47:24,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:47:24,843 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,844 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-25 08:47:24,844 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-07-25 08:47:24,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,911 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,911 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:47:24,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:47:24,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:47:24,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:47:24,913 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-07-25 08:47:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,953 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:47:24,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:47:24,954 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:47:24,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,955 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:47:24,955 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:47:24,956 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:47:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:47:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:47:24,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:47:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:47:24,961 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-25 08:47:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,961 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:47:24,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:47:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:47:24,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:47:24,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,963 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-25 08:47:24,963 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,963 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-07-25 08:47:24,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:25,021 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:25,021 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:47:25,022 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:47:25,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:47:25,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:47:25,023 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-07-25 08:47:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,043 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:47:25,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:47:25,044 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-25 08:47:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,044 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:47:25,045 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:47:25,045 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:47:25,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:47:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:47:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:47:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:47:25,050 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-25 08:47:25,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,051 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:47:25,051 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:47:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:47:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:47:25,052 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,052 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-25 08:47:25,052 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,053 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-07-25 08:47:25,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:25,120 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:25,121 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:47:25,121 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:47:25,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:47:25,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:47:25,125 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-07-25 08:47:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,157 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:47:25,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:47:25,158 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:47:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,159 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:47:25,159 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:47:25,160 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:47:25,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:47:25,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:47:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:47:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:47:25,165 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-25 08:47:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,165 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:47:25,165 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:47:25,166 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:47:25,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:47:25,166 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,167 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-25 08:47:25,167 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-07-25 08:47:25,167 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:25,230 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:25,230 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:47:25,231 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:47:25,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:47:25,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:47:25,232 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-07-25 08:47:25,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,250 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:47:25,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:47:25,251 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-25 08:47:25,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,251 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:47:25,251 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:47:25,252 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:47:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:47:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:47:25,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:47:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:47:25,261 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-25 08:47:25,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,262 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:47:25,262 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:47:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:47:25,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:47:25,263 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,266 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-25 08:47:25,266 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,266 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-07-25 08:47:25,267 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:25,352 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:25,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:47:25,353 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:47:25,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:47:25,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:47:25,354 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-07-25 08:47:25,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,378 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:47:25,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:47:25,378 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:47:25,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,382 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:47:25,382 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:47:25,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:47:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:47:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:47:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:47:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:47:25,393 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-25 08:47:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,393 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:47:25,393 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:47:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:47:25,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:47:25,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,395 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-25 08:47:25,395 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-07-25 08:47:25,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:25,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:25,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:47:25,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:47:25,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:47:25,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:47:25,486 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-07-25 08:47:25,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,517 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:47:25,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:47:25,517 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-25 08:47:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,518 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:47:25,518 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:47:25,520 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:47:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:47:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:47:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:47:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:47:25,526 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-25 08:47:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,526 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:47:25,526 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:47:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:47:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:47:25,527 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,528 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-25 08:47:25,528 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-07-25 08:47:25,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:25,613 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:25,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:47:25,614 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:47:25,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:47:25,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:47:25,615 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-07-25 08:47:25,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,641 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:47:25,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:47:25,641 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:47:25,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,642 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:47:25,642 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:47:25,643 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:47:25,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:47:25,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:47:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:47:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:47:25,656 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-25 08:47:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,656 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:47:25,660 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:47:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:47:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:47:25,660 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,661 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-25 08:47:25,661 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-07-25 08:47:25,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:25,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:25,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:47:25,754 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:47:25,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:47:25,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:47:25,755 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-07-25 08:47:25,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,779 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:47:25,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:47:25,780 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-25 08:47:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,780 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:47:25,780 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:47:25,781 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:47:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:47:25,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:47:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:47:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:47:25,791 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-25 08:47:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,792 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:47:25,792 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:47:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:47:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:47:25,793 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,793 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-25 08:47:25,793 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-07-25 08:47:25,794 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:25,919 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:25,919 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:47:25,920 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:47:25,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:47:25,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:47:25,921 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-07-25 08:47:25,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,946 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:47:25,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:47:25,947 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:47:25,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,949 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:47:25,949 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:47:25,950 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:47:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:47:25,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:47:25,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:47:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:47:25,957 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-25 08:47:25,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:25,958 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:47:25,958 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:47:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:47:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:47:25,959 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:25,959 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-25 08:47:25,959 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:25,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-07-25 08:47:25,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:26,075 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:26,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:47:26,076 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:47:26,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:47:26,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:47:26,077 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-07-25 08:47:26,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:26,108 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:47:26,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:47:26,108 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-25 08:47:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:26,109 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:47:26,109 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:47:26,110 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:47:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:47:26,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:47:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:47:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:47:26,124 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-25 08:47:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:26,125 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:47:26,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:47:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:47:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:47:26,129 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:26,129 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-25 08:47:26,129 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-07-25 08:47:26,130 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:26,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:26,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:47:26,239 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:47:26,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:47:26,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:47:26,241 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-07-25 08:47:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:26,272 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:47:26,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:47:26,272 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:47:26,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:26,273 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:47:26,273 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:47:26,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:47:26,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:47:26,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:47:26,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:47:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:47:26,280 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-25 08:47:26,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:26,280 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:47:26,280 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:47:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:47:26,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:47:26,281 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:26,281 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-25 08:47:26,281 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:26,282 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-07-25 08:47:26,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:26,410 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:26,410 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:47:26,410 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:47:26,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:47:26,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:47:26,412 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-07-25 08:47:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:26,444 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:47:26,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:47:26,444 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-25 08:47:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:26,445 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:47:26,445 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:47:26,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:47:26,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:47:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:47:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:47:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:47:26,454 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-25 08:47:26,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:26,454 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:47:26,455 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:47:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:47:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:47:26,455 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:26,455 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-25 08:47:26,456 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:26,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-07-25 08:47:26,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:26,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:26,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:47:26,576 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:47:26,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:47:26,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:47:26,577 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-07-25 08:47:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:26,606 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:47:26,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:47:26,606 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:47:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:26,607 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:47:26,607 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:47:26,608 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:47:26,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:47:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:47:26,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:47:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:47:26,613 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-25 08:47:26,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:26,614 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:47:26,614 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:47:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:47:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:47:26,615 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:26,615 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-25 08:47:26,615 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:26,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-07-25 08:47:26,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:26,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:26,744 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:47:26,744 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:47:26,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:47:26,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:47:26,745 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-07-25 08:47:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:26,773 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:47:26,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:47:26,774 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-25 08:47:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:26,775 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:47:26,775 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:47:26,777 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:47:26,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:47:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:47:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:47:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:47:26,781 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-25 08:47:26,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:26,782 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:47:26,782 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:47:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:47:26,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:47:26,783 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:26,783 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-25 08:47:26,783 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:26,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-07-25 08:47:26,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:26,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:26,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:47:26,946 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:47:26,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:47:26,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:47:26,947 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-07-25 08:47:26,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:26,974 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:47:26,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:47:26,974 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:47:26,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:26,975 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:47:26,975 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:47:26,976 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 08:47:26,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:47:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:47:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:47:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:47:26,980 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-25 08:47:26,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:26,980 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:47:26,980 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:47:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:47:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:47:26,981 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:26,981 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-25 08:47:26,982 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:26,982 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-07-25 08:47:26,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:27,142 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:27,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:47:27,143 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:47:27,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:47:27,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:47:27,146 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-07-25 08:47:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:27,169 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:47:27,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:47:27,170 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-25 08:47:27,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:27,171 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:47:27,171 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:47:27,175 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:47:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:47:27,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:47:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:47:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:47:27,204 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-25 08:47:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:27,204 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:47:27,204 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:47:27,204 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:47:27,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:47:27,205 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:27,205 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-25 08:47:27,206 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:27,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-07-25 08:47:27,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:27,368 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:27,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:47:27,368 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:47:27,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:47:27,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:47:27,369 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-07-25 08:47:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:27,397 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:47:27,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:47:27,397 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:47:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:27,398 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:47:27,398 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:47:27,399 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:47:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:47:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:47:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:47:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:47:27,402 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-25 08:47:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:27,403 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:47:27,403 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:47:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:47:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:47:27,403 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:27,404 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-25 08:47:27,404 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:27,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-07-25 08:47:27,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:27,539 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:27,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:47:27,540 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:47:27,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:47:27,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:47:27,541 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-07-25 08:47:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:27,567 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:47:27,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:47:27,568 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-25 08:47:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:27,568 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:47:27,569 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:47:27,570 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:47:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:47:27,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:47:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:47:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:47:27,573 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-25 08:47:27,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:27,573 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:47:27,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:47:27,574 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:47:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:47:27,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:27,574 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-25 08:47:27,575 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:27,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-07-25 08:47:27,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:27,723 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:27,723 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:47:27,724 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:47:27,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:47:27,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:47:27,725 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-07-25 08:47:27,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:27,747 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:47:27,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:47:27,748 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:47:27,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:27,749 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:47:27,749 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:47:27,750 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 08:47:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:47:27,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:47:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:47:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:47:27,754 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-25 08:47:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:27,755 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:47:27,755 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:47:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:47:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:47:27,756 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:27,756 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-25 08:47:27,757 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:27,757 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-07-25 08:47:27,757 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:27,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:27,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:47:27,907 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:47:27,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:47:27,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:47:27,908 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-07-25 08:47:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:27,963 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:47:27,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:47:27,963 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-25 08:47:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:27,964 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:47:27,964 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:47:27,966 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 08:47:27,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:47:27,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:47:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:47:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:47:27,976 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-25 08:47:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:27,976 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:47:27,976 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:47:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:47:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:47:27,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:27,977 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-25 08:47:27,978 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:27,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-07-25 08:47:27,979 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:28,168 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:28,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:47:28,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:47:28,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:47:28,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:47:28,169 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-07-25 08:47:28,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:28,197 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:47:28,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:47:28,197 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:47:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:28,198 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:47:28,198 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:47:28,199 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 08:47:28,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:47:28,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:47:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:47:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:47:28,203 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-25 08:47:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:28,203 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:47:28,203 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:47:28,203 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:47:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:47:28,205 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:28,206 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-25 08:47:28,206 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:28,206 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-07-25 08:47:28,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:28,368 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:28,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:47:28,368 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:47:28,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:47:28,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:47:28,370 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-07-25 08:47:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:28,397 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:47:28,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:47:28,397 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-25 08:47:28,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:28,398 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:47:28,398 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:47:28,399 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:47:28,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:47:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:47:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:47:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:47:28,402 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-25 08:47:28,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:28,403 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:47:28,403 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:47:28,403 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:47:28,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:47:28,404 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:28,404 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-25 08:47:28,404 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:28,406 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-07-25 08:47:28,406 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:28,590 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:28,590 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:47:28,590 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:47:28,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:47:28,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:47:28,592 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-07-25 08:47:28,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:28,629 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:47:28,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:47:28,629 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:47:28,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:28,630 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:47:28,630 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:47:28,631 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:47:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:47:28,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:47:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:47:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:47:28,635 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-25 08:47:28,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:28,635 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:47:28,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:47:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:47:28,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:47:28,636 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:28,636 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-25 08:47:28,637 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:28,637 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-07-25 08:47:28,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:28,828 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:28,828 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:47:28,828 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:47:28,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:47:28,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:47:28,830 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-07-25 08:47:28,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:28,856 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:47:28,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:47:28,856 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-25 08:47:28,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:28,857 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:47:28,857 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:47:28,858 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:47:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:47:28,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:47:28,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:47:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:47:28,862 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-25 08:47:28,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:28,862 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:47:28,862 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:47:28,862 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:47:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:47:28,863 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:28,863 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-25 08:47:28,863 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:28,866 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-07-25 08:47:28,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:29,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:29,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:47:29,057 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:47:29,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:47:29,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:47:29,059 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-07-25 08:47:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:29,097 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:47:29,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:47:29,098 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:47:29,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:29,098 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:47:29,099 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:47:29,100 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 08:47:29,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:47:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:47:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:47:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:47:29,105 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-25 08:47:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:29,105 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:47:29,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:47:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:47:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:47:29,106 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:29,106 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-25 08:47:29,106 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:29,107 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-07-25 08:47:29,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:29,284 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:29,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:47:29,284 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:47:29,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:47:29,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:47:29,286 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-07-25 08:47:29,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:29,319 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:47:29,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:47:29,319 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-25 08:47:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:29,320 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:47:29,320 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:47:29,321 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:47:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:47:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:47:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:47:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:47:29,325 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-25 08:47:29,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:29,325 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:47:29,326 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:47:29,326 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:47:29,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:47:29,326 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:29,327 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-25 08:47:29,327 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:29,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-07-25 08:47:29,327 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:29,525 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:29,525 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:47:29,526 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:47:29,526 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:47:29,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:47:29,528 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-07-25 08:47:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:29,562 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:47:29,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:47:29,563 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:47:29,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:29,568 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:47:29,568 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:47:29,569 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:47:29,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:47:29,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:47:29,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:47:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:47:29,574 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-25 08:47:29,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:29,574 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:47:29,575 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:47:29,575 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:47:29,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:47:29,576 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:29,576 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-25 08:47:29,576 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:29,577 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-07-25 08:47:29,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:29,813 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:29,813 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:47:29,814 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:47:29,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:47:29,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:47:29,816 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-07-25 08:47:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:29,854 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:47:29,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:47:29,854 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-25 08:47:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:29,855 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:47:29,856 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:47:29,857 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:47:29,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:47:29,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:47:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:47:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:47:29,863 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-25 08:47:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:29,864 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:47:29,864 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:47:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:47:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:47:29,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:29,865 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-25 08:47:29,866 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:29,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-07-25 08:47:29,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:30,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:30,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:47:30,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:47:30,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:47:30,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:47:30,147 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-07-25 08:47:30,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:30,192 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:47:30,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:47:30,193 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:47:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:30,194 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:47:30,194 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:47:30,195 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:47:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:47:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:47:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:47:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:47:30,201 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-25 08:47:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:30,201 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:47:30,202 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:47:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:47:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:47:30,203 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:30,203 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-25 08:47:30,203 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:30,203 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-07-25 08:47:30,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:30,426 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:30,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:47:30,426 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:47:30,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:47:30,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:47:30,428 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-07-25 08:47:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:30,469 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:47:30,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:47:30,470 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-25 08:47:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:30,471 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:47:30,471 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:47:30,472 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:47:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:47:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:47:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:47:30,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:47:30,478 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-25 08:47:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:30,479 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:47:30,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:47:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:47:30,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:47:30,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:30,480 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-25 08:47:30,480 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:30,480 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-07-25 08:47:30,481 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:30,698 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:30,699 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:47:30,699 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:47:30,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:47:30,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:47:30,702 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-07-25 08:47:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:30,737 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:47:30,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:47:30,737 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:47:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:30,738 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:47:30,738 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:47:30,740 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:47:30,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:47:30,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:47:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:47:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:47:30,745 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-25 08:47:30,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:30,745 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:47:30,746 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:47:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:47:30,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:47:30,747 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:30,747 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-25 08:47:30,747 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:30,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-07-25 08:47:30,747 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:30,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:30,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:47:30,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:47:30,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:47:30,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:47:30,974 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-07-25 08:47:31,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:31,025 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:47:31,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:47:31,026 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-25 08:47:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:31,027 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:47:31,027 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:47:31,028 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:47:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:47:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:47:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:47:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:47:31,032 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-25 08:47:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:31,032 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:47:31,032 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:47:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:47:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:47:31,033 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:31,034 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-25 08:47:31,034 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:31,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-07-25 08:47:31,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:31,262 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:31,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:47:31,263 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:47:31,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:47:31,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:47:31,264 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-07-25 08:47:31,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:31,312 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:47:31,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:47:31,312 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:47:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:31,313 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:47:31,314 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:47:31,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:47:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:47:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:47:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:47:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:47:31,319 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-25 08:47:31,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:31,320 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:47:31,320 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:47:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:47:31,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:47:31,321 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:31,321 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-25 08:47:31,321 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:31,321 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-07-25 08:47:31,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:31,544 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:31,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:47:31,545 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:47:31,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:47:31,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:47:31,546 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-07-25 08:47:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:31,589 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:47:31,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:47:31,589 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-25 08:47:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:31,590 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:47:31,590 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:47:31,591 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:47:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:47:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:47:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:47:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:47:31,595 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-25 08:47:31,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:31,596 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:47:31,596 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:47:31,596 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:47:31,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:47:31,597 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:31,597 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-25 08:47:31,597 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:31,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-07-25 08:47:31,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:31,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:31,815 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:47:31,815 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:47:31,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:47:31,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:47:31,816 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-07-25 08:47:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:31,867 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:47:31,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:47:31,867 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:47:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:31,870 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:47:31,870 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:47:31,871 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:47:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:47:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:47:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:47:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:47:31,878 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-25 08:47:31,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:31,878 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:47:31,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:47:31,879 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:47:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:47:31,880 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:31,880 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-25 08:47:31,880 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:31,880 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-07-25 08:47:31,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:32,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:32,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:47:32,117 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:47:32,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:47:32,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:47:32,119 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-07-25 08:47:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:32,175 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:47:32,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:47:32,175 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-25 08:47:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:32,176 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:47:32,176 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:47:32,177 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:47:32,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:47:32,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:47:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:47:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:47:32,186 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-25 08:47:32,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:32,186 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:47:32,186 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:47:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:47:32,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:47:32,187 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:32,189 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-25 08:47:32,190 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:32,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-07-25 08:47:32,190 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:32,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:32,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:47:32,445 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:47:32,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:47:32,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:47:32,447 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-07-25 08:47:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:32,502 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:47:32,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:47:32,502 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:47:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:32,503 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:47:32,503 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:47:32,504 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:47:32,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:47:32,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:47:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:47:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:47:32,509 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-25 08:47:32,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:32,509 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:47:32,509 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:47:32,510 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:47:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:47:32,511 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:32,511 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-25 08:47:32,511 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:32,511 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-07-25 08:47:32,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:32,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:32,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:47:32,802 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:47:32,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:47:32,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:47:32,804 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-07-25 08:47:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:32,860 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:47:32,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:47:32,860 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-25 08:47:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:32,861 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:47:32,861 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:47:32,863 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:47:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:47:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:47:32,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:47:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:47:32,872 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-25 08:47:32,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:32,872 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:47:32,873 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:47:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:47:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:47:32,875 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:32,876 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-25 08:47:32,876 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:32,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-07-25 08:47:32,876 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:33,170 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:33,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:47:33,170 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:47:33,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:47:33,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:47:33,172 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-07-25 08:47:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:33,215 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:47:33,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:47:33,216 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:47:33,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:33,217 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:47:33,217 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:47:33,218 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:47:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:47:33,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:47:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:47:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:47:33,224 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-25 08:47:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:33,225 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:47:33,225 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:47:33,225 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:47:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:47:33,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:33,226 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-25 08:47:33,226 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:33,227 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-07-25 08:47:33,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:33,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:33,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:47:33,498 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:47:33,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:47:33,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:47:33,500 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-07-25 08:47:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:33,569 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:47:33,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:47:33,569 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-25 08:47:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:33,570 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:47:33,570 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:47:33,571 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:47:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:47:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:47:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:47:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:47:33,576 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-25 08:47:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:33,576 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:47:33,576 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:47:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:47:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:47:33,577 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:33,577 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-25 08:47:33,577 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:33,578 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-07-25 08:47:33,578 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:33,840 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:33,841 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:47:33,841 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:47:33,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:47:33,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:47:33,843 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-07-25 08:47:33,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:33,900 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:47:33,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:47:33,901 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:47:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:33,902 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:47:33,902 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:47:33,903 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:47:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:47:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:47:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:47:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:47:33,907 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-25 08:47:33,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:33,907 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:47:33,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:47:33,907 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:47:33,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:47:33,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:33,909 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-25 08:47:33,909 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:33,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-07-25 08:47:33,909 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:34,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:34,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:34,152 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:47:34,152 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:47:34,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:47:34,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:47:34,154 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-07-25 08:47:34,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:34,217 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:47:34,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:47:34,218 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-25 08:47:34,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:34,219 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:47:34,219 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:47:34,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:47:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:47:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:47:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:47:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:47:34,225 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-25 08:47:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:34,225 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:47:34,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:47:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:47:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:47:34,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:34,227 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-25 08:47:34,227 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:34,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-07-25 08:47:34,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:34,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:34,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:47:34,485 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:47:34,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:47:34,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:47:34,487 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-07-25 08:47:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:34,549 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:47:34,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:47:34,550 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:47:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:34,551 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:47:34,551 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:47:34,552 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:47:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:47:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:47:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:47:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:47:34,557 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-25 08:47:34,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:34,557 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:47:34,557 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:47:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:47:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:47:34,558 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:34,559 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-25 08:47:34,559 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:34,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-07-25 08:47:34,559 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:34,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:34,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:47:34,799 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:47:34,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:47:34,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:47:34,801 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-07-25 08:47:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:34,845 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:47:34,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:47:34,845 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-25 08:47:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:34,846 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:47:34,846 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:47:34,847 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:47:34,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:47:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:47:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:47:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:47:34,852 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-25 08:47:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:34,852 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:47:34,853 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:47:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:47:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:47:34,854 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:34,854 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-25 08:47:34,854 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:34,854 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-07-25 08:47:34,855 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:35,103 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:35,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:47:35,103 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:47:35,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:47:35,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:47:35,105 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-07-25 08:47:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:35,170 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:47:35,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:47:35,171 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:47:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:35,172 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:47:35,172 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:47:35,173 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:47:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:47:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:47:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:47:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:47:35,178 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-25 08:47:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:35,178 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:47:35,178 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:47:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:47:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:47:35,179 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:35,179 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-25 08:47:35,180 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:35,180 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-07-25 08:47:35,180 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:35,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:35,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:47:35,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:47:35,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:47:35,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:47:35,452 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-07-25 08:47:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:35,530 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:47:35,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:47:35,530 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-25 08:47:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:35,532 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:47:35,532 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:47:35,533 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:47:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:47:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:47:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:47:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:47:35,540 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-25 08:47:35,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:35,540 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:47:35,540 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:47:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:47:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:47:35,542 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:35,543 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-25 08:47:35,543 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:35,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-07-25 08:47:35,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:35,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:35,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:35,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:47:35,883 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:47:35,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:47:35,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:47:35,885 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-07-25 08:47:35,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:35,951 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:47:35,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:47:35,951 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:47:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:35,953 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:47:35,953 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:47:35,954 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:47:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:47:35,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:47:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:47:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:47:35,960 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-25 08:47:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:35,961 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:47:35,961 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:47:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:47:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:47:35,962 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:35,963 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-25 08:47:35,963 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:35,963 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-07-25 08:47:35,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:36,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:36,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:47:36,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:47:36,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:47:36,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:47:36,236 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-07-25 08:47:36,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:36,306 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:47:36,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:47:36,306 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-25 08:47:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:36,307 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:47:36,307 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:47:36,308 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:47:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:47:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:47:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:47:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:47:36,313 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-25 08:47:36,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:36,314 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:47:36,314 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:47:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:47:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:47:36,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:36,315 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-25 08:47:36,316 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:36,316 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-07-25 08:47:36,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:36,547 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:36,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:47:36,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:47:36,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:47:36,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:47:36,549 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-07-25 08:47:36,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:36,631 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:47:36,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:47:36,631 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:47:36,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:36,632 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:47:36,632 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:47:36,633 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:47:36,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:47:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:47:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:47:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:47:36,638 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-25 08:47:36,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:36,638 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:47:36,638 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:47:36,639 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:47:36,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:47:36,640 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:36,640 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-25 08:47:36,640 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:36,643 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-07-25 08:47:36,643 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:36,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:36,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:47:36,879 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:47:36,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:47:36,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:47:36,881 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-07-25 08:47:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:36,960 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:47:36,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:47:36,961 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-25 08:47:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:36,962 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:47:36,962 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:47:36,962 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:47:36,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:47:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:47:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:47:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:47:36,968 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-25 08:47:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:36,968 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:47:36,968 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:47:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:47:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:47:36,969 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:36,970 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-25 08:47:36,970 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:36,970 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-07-25 08:47:36,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:37,203 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:37,203 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:47:37,204 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:47:37,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:47:37,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:47:37,205 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-07-25 08:47:37,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:37,256 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:47:37,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:47:37,257 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:47:37,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:37,260 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:47:37,260 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:47:37,261 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:47:37,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:47:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:47:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:47:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:47:37,267 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-25 08:47:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:37,267 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:47:37,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:47:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:47:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:47:37,269 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:37,269 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-25 08:47:37,269 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:37,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-07-25 08:47:37,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:37,532 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:37,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:47:37,533 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:47:37,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:47:37,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:47:37,534 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-07-25 08:47:37,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:37,611 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:47:37,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:47:37,611 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-25 08:47:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:37,612 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:47:37,613 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:47:37,613 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:47:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:47:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:47:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:47:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:47:37,618 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-25 08:47:37,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:37,619 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:47:37,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:47:37,619 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:47:37,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:47:37,620 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:37,620 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-25 08:47:37,620 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:37,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-07-25 08:47:37,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:37,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:37,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:47:37,877 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:47:37,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:47:37,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:47:37,878 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-07-25 08:47:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:37,970 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:47:37,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:47:37,971 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:47:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:37,972 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:47:37,972 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:47:37,973 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:47:37,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:47:37,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:47:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:47:37,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:47:37,978 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-25 08:47:37,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:37,979 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:47:37,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:47:37,979 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:47:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:47:37,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:37,980 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-25 08:47:37,981 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:37,981 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-07-25 08:47:37,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:38,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:38,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:47:38,252 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:47:38,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:47:38,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:47:38,254 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-07-25 08:47:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:38,348 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:47:38,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:47:38,348 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-25 08:47:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:38,349 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:47:38,349 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:47:38,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:47:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:47:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:47:38,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:47:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:47:38,355 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-25 08:47:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:38,356 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:47:38,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:47:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:47:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:47:38,357 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:38,357 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-25 08:47:38,357 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:38,358 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-07-25 08:47:38,358 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:38,659 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:38,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:47:38,660 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:47:38,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:47:38,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:47:38,662 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-07-25 08:47:38,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:38,751 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:47:38,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:47:38,752 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:47:38,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:38,753 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:47:38,753 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:47:38,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:47:38,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:47:38,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:47:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:47:38,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:47:38,761 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-25 08:47:38,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:38,762 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:47:38,762 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:47:38,762 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:47:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:47:38,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:38,764 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-25 08:47:38,764 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:38,764 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-07-25 08:47:38,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:39,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:47:39,028 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:47:39,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:47:39,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:47:39,030 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-07-25 08:47:39,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,116 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:47:39,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:47:39,117 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-25 08:47:39,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,118 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:47:39,118 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:47:39,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:47:39,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:47:39,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:47:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:47:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:47:39,124 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-25 08:47:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,125 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:47:39,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:47:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:47:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:47:39,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,127 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-25 08:47:39,127 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-07-25 08:47:39,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:39,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:47:39,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:47:39,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:47:39,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:47:39,415 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-07-25 08:47:39,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,533 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:47:39,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:47:39,533 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:47:39,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,534 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:47:39,534 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:47:39,535 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:47:39,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:47:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:47:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:47:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:47:39,540 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-25 08:47:39,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,540 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:47:39,541 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:47:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:47:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:47:39,542 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,542 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-25 08:47:39,543 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,543 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-07-25 08:47:39,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:39,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:47:39,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:47:39,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:47:39,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:47:39,848 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-07-25 08:47:39,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:39,956 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:47:39,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:47:39,956 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-25 08:47:39,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:39,957 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:47:39,957 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:47:39,958 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:47:39,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:47:39,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:47:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:47:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:47:39,965 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-25 08:47:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,965 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:47:39,966 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:47:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:47:39,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:47:39,967 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,967 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-25 08:47:39,967 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-07-25 08:47:39,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:40,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:40,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:47:40,252 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:47:40,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:47:40,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:47:40,254 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-07-25 08:47:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:40,363 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:47:40,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:47:40,364 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:47:40,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:40,365 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:47:40,365 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:47:40,366 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:47:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:47:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:47:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:47:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:47:40,371 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-25 08:47:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:40,372 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:47:40,372 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:47:40,372 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:47:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:47:40,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:40,374 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-25 08:47:40,374 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:40,374 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-07-25 08:47:40,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:40,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:40,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:47:40,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:47:40,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:47:40,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:47:40,666 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-07-25 08:47:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:40,747 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:47:40,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:47:40,748 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-25 08:47:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:40,749 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:47:40,749 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:47:40,750 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:47:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:47:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:47:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:47:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:47:40,758 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-25 08:47:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:40,759 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:47:40,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:47:40,759 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:47:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:47:40,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:40,760 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-25 08:47:40,761 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:40,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-07-25 08:47:40,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:41,161 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:41,161 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:47:41,162 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:47:41,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:47:41,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:47:41,164 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-07-25 08:47:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:41,269 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:47:41,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:47:41,269 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:47:41,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:41,270 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:47:41,271 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:47:41,272 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:47:41,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:47:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:47:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:47:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:47:41,278 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-25 08:47:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:41,279 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:47:41,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:47:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:47:41,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:47:41,281 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:41,281 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-25 08:47:41,281 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:41,282 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-07-25 08:47:41,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:41,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:41,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:47:41,626 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:47:41,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:47:41,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:47:41,628 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-07-25 08:47:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:41,752 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:47:41,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:47:41,753 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-25 08:47:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:41,754 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:47:41,754 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:47:41,755 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:47:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:47:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:47:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:47:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:47:41,761 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-25 08:47:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:41,761 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:47:41,761 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:47:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:47:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:47:41,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:41,763 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-25 08:47:41,764 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:41,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-07-25 08:47:41,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:42,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:42,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:47:42,060 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:47:42,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:47:42,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:47:42,061 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-07-25 08:47:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:42,136 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:47:42,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:47:42,137 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:47:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:42,139 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:47:42,139 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:47:42,140 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:47:42,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:47:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:47:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:47:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:47:42,149 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-25 08:47:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:42,149 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:47:42,149 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:47:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:47:42,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:47:42,151 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:42,151 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-25 08:47:42,151 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:42,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-07-25 08:47:42,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:42,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:42,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:47:42,446 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:47:42,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:47:42,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:47:42,448 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-07-25 08:47:42,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:42,579 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:47:42,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:47:42,580 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-25 08:47:42,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:42,581 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:47:42,581 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:47:42,582 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:47:42,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:47:42,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:47:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:47:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:47:42,588 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-25 08:47:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:42,588 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:47:42,589 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:47:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:47:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:47:42,590 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:42,590 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-25 08:47:42,591 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:42,591 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-07-25 08:47:42,591 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:42,911 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:42,911 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:47:42,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:47:42,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:47:42,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:47:42,913 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-07-25 08:47:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:43,042 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:47:43,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:47:43,042 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:47:43,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:43,044 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:47:43,044 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:47:43,045 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 08:47:43,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:47:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:47:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:47:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:47:43,054 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-25 08:47:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:43,055 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:47:43,055 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:47:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:47:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:47:43,057 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:43,057 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-25 08:47:43,058 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:43,058 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-07-25 08:47:43,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:43,364 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:43,364 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:47:43,365 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:47:43,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:47:43,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:47:43,366 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-07-25 08:47:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:43,435 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:47:43,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:47:43,435 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-25 08:47:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:43,436 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:47:43,436 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:47:43,437 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 08:47:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:47:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:47:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:47:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:47:43,445 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-25 08:47:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:43,445 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:47:43,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:47:43,446 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:47:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:47:43,447 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:43,447 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-25 08:47:43,447 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:43,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-07-25 08:47:43,448 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:43,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:43,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:47:43,784 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:47:43,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:47:43,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:47:43,786 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-07-25 08:47:43,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:43,972 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:47:43,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:47:43,972 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:47:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:43,973 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:47:43,973 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:47:43,974 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:47:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:47:43,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:47:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:47:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:47:43,980 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-25 08:47:43,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:43,980 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:47:43,980 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:47:43,980 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:47:43,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:47:43,982 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:43,982 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-25 08:47:43,982 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:43,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-07-25 08:47:43,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:44,288 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:44,288 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:47:44,289 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:47:44,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:47:44,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:47:44,291 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-07-25 08:47:44,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:44,432 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:47:44,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:47:44,432 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-25 08:47:44,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:44,434 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:47:44,434 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:47:44,435 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 08:47:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:47:44,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:47:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:47:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:47:44,441 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-25 08:47:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:44,441 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:47:44,441 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:47:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:47:44,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:47:44,443 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:44,443 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-25 08:47:44,443 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:44,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-07-25 08:47:44,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:44,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:44,746 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:47:44,746 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:47:44,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:47:44,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:47:44,748 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-07-25 08:47:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:44,915 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:47:44,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:47:44,915 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:47:44,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:44,917 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:47:44,917 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:47:44,918 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 08:47:44,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:47:44,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:47:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:47:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:47:44,923 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-25 08:47:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:44,924 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:47:44,924 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:47:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:47:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:47:44,925 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:44,926 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-25 08:47:44,926 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:44,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-07-25 08:47:44,926 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:45,248 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:45,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:47:45,249 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:47:45,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:47:45,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:47:45,251 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-07-25 08:47:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:45,432 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:47:45,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:47:45,433 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-25 08:47:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:45,434 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:47:45,434 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:47:45,435 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 08:47:45,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:47:45,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:47:45,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:47:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:47:45,441 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-25 08:47:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:45,442 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:47:45,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:47:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:47:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:47:45,444 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:45,444 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-25 08:47:45,444 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-07-25 08:47:45,445 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:45,818 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:45,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:47:45,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:47:45,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:47:45,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:47:45,821 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-07-25 08:47:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:46,027 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:47:46,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:47:46,027 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:47:46,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:46,029 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:47:46,029 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:47:46,031 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 08:47:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:47:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:47:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:47:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:47:46,036 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-25 08:47:46,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:46,037 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:47:46,037 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:47:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:47:46,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:47:46,039 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:46,039 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-25 08:47:46,039 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:46,040 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-07-25 08:47:46,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:46,428 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:46,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:47:46,429 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:47:46,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:47:46,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:47:46,431 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-07-25 08:47:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:46,615 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:47:46,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:47:46,615 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-25 08:47:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:46,617 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:47:46,617 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:47:46,619 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:47:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:47:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:47:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:47:46,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:47:46,625 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-25 08:47:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:46,625 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:47:46,625 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:47:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:47:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:47:46,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:46,628 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-25 08:47:46,629 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:46,629 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-07-25 08:47:46,629 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:47,082 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:47,083 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:47:47,083 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:47:47,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:47:47,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:47:47,085 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-07-25 08:47:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:47,229 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:47:47,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:47:47,230 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:47:47,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:47,231 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:47:47,232 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:47:47,233 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:47:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:47:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:47:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:47:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:47:47,240 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-25 08:47:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:47,241 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:47:47,241 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:47:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:47:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:47:47,243 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:47,244 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-25 08:47:47,244 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:47,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-07-25 08:47:47,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:47,654 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:47,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:47:47,655 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:47:47,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:47:47,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:47:47,657 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-07-25 08:47:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:47,736 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:47:47,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:47:47,737 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-25 08:47:47,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:47,738 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:47:47,738 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:47:47,739 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:47:47,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:47:47,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:47:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:47:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:47:47,748 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-25 08:47:47,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:47,748 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:47:47,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:47:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:47:47,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:47:47,750 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:47,750 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-25 08:47:47,750 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:47,751 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-07-25 08:47:47,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:48,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:48,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:47:48,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:47:48,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:47:48,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:47:48,090 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-07-25 08:47:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:48,269 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:47:48,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:47:48,269 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:47:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:48,271 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:47:48,271 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:47:48,271 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 08:47:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:47:48,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:47:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:47:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:47:48,277 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-25 08:47:48,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:48,277 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:47:48,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:47:48,277 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:47:48,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:47:48,279 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:48,279 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-25 08:47:48,280 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:48,280 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-07-25 08:47:48,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:48,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:48,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:47:48,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:47:48,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:47:48,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:47:48,620 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-07-25 08:47:48,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:48,798 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:47:48,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:47:48,798 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-25 08:47:48,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:48,799 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:47:48,800 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:47:48,800 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 08:47:48,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:47:48,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:47:48,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:47:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:47:48,806 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-25 08:47:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:48,806 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:47:48,806 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:47:48,806 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:47:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:47:48,810 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:48,810 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-25 08:47:48,811 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:48,811 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-07-25 08:47:48,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:49,172 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:49,172 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:47:49,172 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:47:49,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:47:49,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:47:49,174 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-07-25 08:47:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:49,306 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:47:49,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:47:49,307 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:47:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:49,308 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:47:49,308 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:47:49,309 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 08:47:49,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:47:49,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:47:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:47:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:47:49,324 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-25 08:47:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:49,324 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:47:49,324 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:47:49,324 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:47:49,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:47:49,326 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:49,326 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-25 08:47:49,327 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:49,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-07-25 08:47:49,327 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:49,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:49,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:47:49,721 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:47:49,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:47:49,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:47:49,723 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-07-25 08:47:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:49,882 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:47:49,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:47:49,882 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-25 08:47:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:49,884 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:47:49,884 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:47:49,885 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 08:47:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:47:49,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:47:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:47:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:47:49,889 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-25 08:47:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:49,890 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:47:49,890 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:47:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:47:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:47:49,891 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:49,891 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-25 08:47:49,891 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:49,892 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-07-25 08:47:49,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:50,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:50,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:47:50,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:47:50,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:47:50,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:47:50,343 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-07-25 08:47:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:50,502 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:47:50,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:47:50,503 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:47:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:50,505 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:47:50,505 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:47:50,505 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 08:47:50,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:47:50,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:47:50,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:47:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:47:50,510 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-25 08:47:50,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:50,510 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:47:50,510 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:47:50,511 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:47:50,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:47:50,511 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:50,512 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-25 08:47:50,512 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:50,512 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-07-25 08:47:50,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:50,902 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:50,902 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:47:50,903 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:47:50,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:47:50,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:47:50,905 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-07-25 08:47:50,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:50,985 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:47:50,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:47:50,985 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-25 08:47:50,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:50,986 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:47:50,986 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:47:50,987 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:47:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:47:50,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:47:50,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:47:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:47:50,992 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-25 08:47:50,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:50,992 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:47:50,992 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:47:50,993 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:47:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:47:50,994 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:50,994 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-25 08:47:50,994 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:50,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-07-25 08:47:50,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:51,327 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 08:47:51,328 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:51,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:47:51,328 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:47:51,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:47:51,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:47:51,329 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-07-25 08:47:51,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:51,503 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:47:51,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:47:51,504 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:47:51,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:51,505 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:47:51,505 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:47:51,506 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:47:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:47:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:47:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:47:51,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:47:51,511 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-25 08:47:51,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:51,512 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:47:51,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:47:51,512 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:47:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:47:51,513 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:51,513 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-25 08:47:51,513 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:51,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-07-25 08:47:51,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:51,845 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 08:47:51,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:51,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:47:51,845 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:47:51,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:47:51,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:47:51,847 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-07-25 08:47:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:52,005 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:47:52,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:47:52,006 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-25 08:47:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:52,007 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:47:52,007 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:47:52,008 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 08:47:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:47:52,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:47:52,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:47:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:47:52,013 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-25 08:47:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:52,013 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:47:52,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:47:52,013 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:47:52,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:47:52,014 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:52,014 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-25 08:47:52,014 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:52,014 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-07-25 08:47:52,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:52,341 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 08:47:52,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:52,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:47:52,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:47:52,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:47:52,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:47:52,344 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-07-25 08:47:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:52,561 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:47:52,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:47:52,561 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:47:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:52,562 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:47:52,562 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:47:52,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:47:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:47:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:47:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:47:52,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:47:52,567 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-25 08:47:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:52,567 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:47:52,567 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:47:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:47:52,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:47:52,568 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:52,568 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-25 08:47:52,569 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:52,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-07-25 08:47:52,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:52,890 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 08:47:52,891 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:52,891 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:47:52,891 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:47:52,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:47:52,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:47:52,893 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-07-25 08:47:53,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:53,063 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:47:53,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:47:53,063 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-25 08:47:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:53,064 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:47:53,064 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:47:53,065 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:47:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:47:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:47:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:47:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:47:53,072 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-25 08:47:53,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:53,072 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:47:53,072 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:47:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:47:53,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:47:53,074 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:53,074 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-25 08:47:53,074 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:53,074 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-07-25 08:47:53,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:53,474 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 08:47:53,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:53,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:47:53,474 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:47:53,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:47:53,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:47:53,475 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-07-25 08:47:53,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:53,662 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:47:53,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:47:53,662 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:47:53,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:53,664 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:47:53,664 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:47:53,664 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:47:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:47:53,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:47:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:47:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:47:53,669 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-25 08:47:53,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:53,669 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:47:53,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:47:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:47:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:47:53,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:53,671 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-25 08:47:53,671 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:53,671 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-07-25 08:47:53,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:54,008 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 08:47:54,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:54,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:47:54,009 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:47:54,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:47:54,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:47:54,011 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-07-25 08:47:54,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:54,204 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:47:54,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:47:54,204 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-25 08:47:54,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:54,205 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:47:54,205 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:47:54,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:47:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:47:54,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:47:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:47:54,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:47:54,212 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-25 08:47:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:54,212 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:47:54,212 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:47:54,212 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:47:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:47:54,213 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:54,213 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-25 08:47:54,214 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:54,214 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-07-25 08:47:54,214 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:54,530 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 08:47:54,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:54,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:47:54,531 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:47:54,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:47:54,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:47:54,532 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-07-25 08:47:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:54,685 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:47:54,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:47:54,686 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:47:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:54,687 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:47:54,687 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:47:54,688 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:47:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:47:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:47:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:47:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:47:54,694 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-25 08:47:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:54,694 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:47:54,694 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:47:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:47:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:47:54,695 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:54,695 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-25 08:47:54,696 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:54,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-07-25 08:47:54,696 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:54,993 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 08:47:54,993 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:54,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:47:54,994 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:47:54,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:47:54,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:47:54,995 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-07-25 08:47:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:55,076 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:47:55,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:47:55,076 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-25 08:47:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:55,078 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:47:55,078 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:47:55,079 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:47:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:47:55,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:47:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:47:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:47:55,084 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-25 08:47:55,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:55,084 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:47:55,084 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:47:55,084 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:47:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:47:55,085 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:55,086 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-25 08:47:55,086 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:55,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-07-25 08:47:55,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:55,401 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 08:47:55,401 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:55,401 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:47:55,404 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:47:55,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:47:55,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:47:55,406 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-07-25 08:47:55,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:55,548 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:47:55,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:47:55,548 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:47:55,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:55,549 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:47:55,549 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:47:55,550 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:47:55,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:47:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:47:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:47:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:47:55,555 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-25 08:47:55,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:55,555 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:47:55,555 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:47:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:47:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:47:55,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:55,557 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-25 08:47:55,557 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:55,557 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-07-25 08:47:55,557 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:55,972 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 08:47:55,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:55,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:47:55,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:47:55,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:47:55,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:47:55,975 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-07-25 08:47:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:56,143 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:47:56,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:47:56,143 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-25 08:47:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:56,144 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:47:56,144 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:47:56,145 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 08:47:56,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:47:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:47:56,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:47:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:47:56,150 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-07-25 08:47:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:56,150 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:47:56,151 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:47:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:47:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:47:56,152 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:56,152 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-07-25 08:47:56,152 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:56,152 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-07-25 08:47:56,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:56,449 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 08:47:56,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:56,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:47:56,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:47:56,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:47:56,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:47:56,452 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-07-25 08:47:56,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:56,559 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:47:56,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:47:56,560 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:47:56,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:56,561 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:47:56,561 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:47:56,562 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:47:56,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:47:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:47:56,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:47:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:47:56,567 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-07-25 08:47:56,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:56,567 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:47:56,567 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:47:56,567 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:47:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:47:56,568 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:56,569 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-07-25 08:47:56,569 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:56,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-07-25 08:47:56,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:56,879 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 08:47:56,880 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:56,880 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:47:56,880 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:47:56,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:47:56,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:47:56,882 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-07-25 08:47:57,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:57,067 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:47:57,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:47:57,067 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-25 08:47:57,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:57,068 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:47:57,068 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:47:57,069 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:47:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:47:57,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:47:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:47:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:47:57,074 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-07-25 08:47:57,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:57,074 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:47:57,074 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:47:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:47:57,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:47:57,075 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:57,075 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-07-25 08:47:57,075 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:57,076 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-07-25 08:47:57,076 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:57,381 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 08:47:57,382 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:57,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:47:57,382 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:47:57,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:47:57,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:47:57,384 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-07-25 08:47:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:57,516 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:47:57,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:47:57,516 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:47:57,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:57,517 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:47:57,517 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:47:57,517 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:47:57,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:47:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:47:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:47:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:47:57,522 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-07-25 08:47:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:57,522 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:47:57,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:47:57,523 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:47:57,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:47:57,523 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:57,524 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-07-25 08:47:57,524 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:57,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-07-25 08:47:57,524 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:57,837 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 08:47:57,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:57,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:47:57,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:47:57,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:47:57,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:47:57,839 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-07-25 08:47:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:57,993 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:47:57,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:47:57,993 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-25 08:47:57,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:57,994 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:47:57,994 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:47:57,995 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:47:57,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:47:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:47:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:47:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:47:58,000 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-07-25 08:47:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:58,000 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:47:58,000 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:47:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:47:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:47:58,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:58,002 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-07-25 08:47:58,002 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:58,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-07-25 08:47:58,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:58,508 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 08:47:58,509 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:58,509 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:47:58,509 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:47:58,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:47:58,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:47:58,510 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-07-25 08:47:58,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:58,712 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:47:58,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:47:58,712 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:47:58,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:58,713 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:47:58,713 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:47:58,714 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:47:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:47:58,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:47:58,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:47:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:47:58,719 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-07-25 08:47:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:58,719 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:47:58,719 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:47:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:47:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:47:58,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:58,720 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-07-25 08:47:58,721 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:58,721 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-07-25 08:47:58,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:59,110 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 08:47:59,111 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:59,111 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:47:59,111 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:47:59,112 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:47:59,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:47:59,113 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-07-25 08:47:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:59,376 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:47:59,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:47:59,376 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-25 08:47:59,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:59,377 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:47:59,377 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:47:59,378 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:47:59,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:47:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:47:59,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:47:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:47:59,383 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-07-25 08:47:59,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:59,383 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:47:59,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:47:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:47:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:47:59,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:59,385 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-07-25 08:47:59,385 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-07-25 08:47:59,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:59,734 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 08:47:59,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:59,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:47:59,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:47:59,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:47:59,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:47:59,736 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-07-25 08:47:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:59,900 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:47:59,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:47:59,900 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:47:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:59,901 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:47:59,901 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:47:59,902 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:47:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:47:59,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:47:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:47:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:47:59,906 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-07-25 08:47:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:59,907 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:47:59,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:47:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:47:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:47:59,908 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:59,908 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-07-25 08:47:59,908 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:59,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-07-25 08:47:59,908 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:00,270 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 08:48:00,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:00,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:48:00,271 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:48:00,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:48:00,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:48:00,272 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-07-25 08:48:00,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:00,397 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:48:00,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:48:00,397 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-25 08:48:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:00,398 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:48:00,398 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:48:00,399 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:48:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:48:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:48:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:48:00,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:48:00,402 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-07-25 08:48:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:00,402 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:48:00,402 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:48:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:48:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:48:00,403 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:00,403 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-07-25 08:48:00,403 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:00,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-07-25 08:48:00,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:00,778 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 08:48:00,778 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:00,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:48:00,779 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:48:00,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:48:00,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:48:00,781 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-07-25 08:48:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:00,931 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:48:00,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:48:00,932 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:48:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:00,932 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:48:00,932 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:48:00,933 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:48:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:48:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:48:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:48:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:48:00,937 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-07-25 08:48:00,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:00,938 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:48:00,938 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:48:00,938 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:48:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:48:00,939 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:00,939 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-07-25 08:48:00,939 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:00,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-07-25 08:48:00,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:01,365 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 08:48:01,365 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:01,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:48:01,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:48:01,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:48:01,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:48:01,367 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-07-25 08:48:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:01,553 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:48:01,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:48:01,553 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-25 08:48:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:01,554 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:48:01,554 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:48:01,555 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:48:01,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:48:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:48:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:48:01,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:48:01,558 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-07-25 08:48:01,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:01,559 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:48:01,559 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:48:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:48:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:48:01,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:01,560 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-07-25 08:48:01,560 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:01,560 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-07-25 08:48:01,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:01,942 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 08:48:01,942 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:01,942 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:48:01,942 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:48:01,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:48:01,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:48:01,944 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-07-25 08:48:02,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:02,164 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:48:02,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:48:02,165 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 08:48:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:02,165 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:48:02,165 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:48:02,166 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:48:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:48:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:48:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:48:02,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:48:02,171 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-07-25 08:48:02,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:02,171 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:48:02,171 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:48:02,171 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:48:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:48:02,172 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:02,173 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-07-25 08:48:02,173 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:02,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-07-25 08:48:02,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:02,731 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 08:48:02,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:02,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:48:02,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:48:02,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:48:02,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:48:02,734 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-07-25 08:48:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:02,993 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:48:02,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:48:02,993 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-25 08:48:02,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:02,994 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:48:02,994 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:48:02,995 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:48:02,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:48:02,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:48:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:48:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:48:02,999 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-07-25 08:48:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:02,999 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:48:03,000 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:48:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:48:03,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:48:03,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:03,001 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-07-25 08:48:03,001 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:03,001 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-07-25 08:48:03,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:03,375 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 08:48:03,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:03,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:48:03,376 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:48:03,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:48:03,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:48:03,379 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-07-25 08:48:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:03,603 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:48:03,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:48:03,603 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 08:48:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:03,603 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:48:03,604 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:48:03,605 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:48:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:48:03,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:48:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:48:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:48:03,609 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-07-25 08:48:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:03,610 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:48:03,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:48:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:48:03,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:48:03,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:03,611 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-07-25 08:48:03,611 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:03,612 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-07-25 08:48:03,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:04,108 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 08:48:04,108 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:04,108 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:48:04,109 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:48:04,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:48:04,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:48:04,111 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-07-25 08:48:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:04,395 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:48:04,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:48:04,396 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-07-25 08:48:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:04,396 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:48:04,396 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:48:04,397 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:48:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:48:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:48:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:48:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:48:04,402 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-07-25 08:48:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:04,402 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:48:04,402 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:48:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:48:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:48:04,404 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:04,404 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-07-25 08:48:04,404 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:04,404 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-07-25 08:48:04,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:04,911 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 08:48:04,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:04,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:48:04,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:48:04,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:48:04,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:48:04,914 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-07-25 08:48:05,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:05,102 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:48:05,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:48:05,102 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 08:48:05,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:05,102 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:48:05,103 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:48:05,103 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:48:05,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:48:05,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:48:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:48:05,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 08:48:05,107 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-07-25 08:48:05,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:05,108 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 08:48:05,108 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:48:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 08:48:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:48:05,109 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:05,109 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-07-25 08:48:05,109 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-07-25 08:48:05,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:05,557 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 08:48:05,557 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:05,557 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:48:05,558 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:48:05,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:48:05,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:48:05,559 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 121 states. [2018-07-25 08:48:05,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:05,731 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:48:05,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:48:05,732 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 240 [2018-07-25 08:48:05,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:05,732 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:48:05,732 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:48:05,733 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:48:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:48:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:48:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:48:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 08:48:05,737 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-07-25 08:48:05,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:05,737 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 08:48:05,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:48:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 08:48:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:48:05,738 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:05,738 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-07-25 08:48:05,739 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:05,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1239446717, now seen corresponding path program 119 times [2018-07-25 08:48:05,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:06,139 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 08:48:06,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:06,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:48:06,140 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:48:06,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:48:06,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:48:06,142 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 122 states. [2018-07-25 08:48:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:06,387 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:48:06,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:48:06,387 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 08:48:06,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:06,388 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:48:06,388 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:48:06,389 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:48:06,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:48:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:48:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:48:06,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 08:48:06,392 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-07-25 08:48:06,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:06,392 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 08:48:06,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:48:06,392 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 08:48:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:48:06,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:06,393 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-07-25 08:48:06,394 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:06,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1402406135, now seen corresponding path program 120 times [2018-07-25 08:48:06,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:06,796 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 08:48:06,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:06,797 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:48:06,797 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:48:06,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:48:06,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:48:06,798 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 123 states. [2018-07-25 08:48:07,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:07,084 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:48:07,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:48:07,084 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 244 [2018-07-25 08:48:07,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:07,085 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:48:07,085 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:48:07,086 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:48:07,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:48:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:48:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:48:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 08:48:07,089 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-07-25 08:48:07,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:07,090 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 08:48:07,090 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:48:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 08:48:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:48:07,091 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:07,091 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-07-25 08:48:07,091 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:07,091 INFO L82 PathProgramCache]: Analyzing trace with hash -907383119, now seen corresponding path program 121 times [2018-07-25 08:48:07,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:07,558 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 08:48:07,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:07,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:48:07,558 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:48:07,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:48:07,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:48:07,560 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 124 states. [2018-07-25 08:48:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:07,842 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:48:07,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:48:07,843 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 08:48:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:07,844 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:48:07,844 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:48:07,845 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 08:48:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:48:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:48:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:48:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 08:48:07,850 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-07-25 08:48:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:07,850 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 08:48:07,850 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:48:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 08:48:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:48:07,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:07,852 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-07-25 08:48:07,852 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:07,852 INFO L82 PathProgramCache]: Analyzing trace with hash -116764181, now seen corresponding path program 122 times [2018-07-25 08:48:07,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:08,563 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 08:48:08,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:08,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:48:08,564 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:48:08,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:48:08,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:48:08,566 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 125 states. [2018-07-25 08:48:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:08,795 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 08:48:08,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:48:08,796 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 248 [2018-07-25 08:48:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:08,796 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:48:08,796 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:48:08,798 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:48:08,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:48:08,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 08:48:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:48:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 08:48:08,802 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-07-25 08:48:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:08,803 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 08:48:08,803 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:48:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 08:48:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:48:08,804 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:08,804 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-07-25 08:48:08,804 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:08,804 INFO L82 PathProgramCache]: Analyzing trace with hash -541176155, now seen corresponding path program 123 times [2018-07-25 08:48:08,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:09,313 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 08:48:09,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:09,314 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:48:09,314 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:48:09,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:48:09,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:48:09,316 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 126 states. [2018-07-25 08:48:09,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:09,459 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 08:48:09,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:48:09,459 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 08:48:09,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:09,460 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:48:09,460 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:48:09,462 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:48:09,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:48:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:48:09,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:48:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 08:48:09,466 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-07-25 08:48:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:09,467 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 08:48:09,467 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:48:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 08:48:09,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:48:09,468 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:09,468 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-07-25 08:48:09,468 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:09,469 INFO L82 PathProgramCache]: Analyzing trace with hash -379190049, now seen corresponding path program 124 times [2018-07-25 08:48:09,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:09,922 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 08:48:09,923 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:09,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:48:09,923 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:48:09,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:48:09,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:48:09,926 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 127 states. [2018-07-25 08:48:10,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:10,293 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 08:48:10,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:48:10,293 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 252 [2018-07-25 08:48:10,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:10,294 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:48:10,294 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:48:10,295 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:48:10,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:48:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 08:48:10,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:48:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 08:48:10,299 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-07-25 08:48:10,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:10,300 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 08:48:10,300 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:48:10,300 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 08:48:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:48:10,301 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:10,301 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-07-25 08:48:10,301 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:10,301 INFO L82 PathProgramCache]: Analyzing trace with hash 670635161, now seen corresponding path program 125 times [2018-07-25 08:48:10,302 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:10,836 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 08:48:10,836 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:10,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:48:10,836 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:48:10,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:48:10,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:48:10,839 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 128 states. [2018-07-25 08:48:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:11,055 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 08:48:11,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:48:11,055 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 08:48:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:11,056 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:48:11,056 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:48:11,057 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 08:48:11,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:48:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:48:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:48:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-25 08:48:11,062 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-07-25 08:48:11,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:11,063 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-25 08:48:11,063 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:48:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-25 08:48:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:48:11,064 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:11,064 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-07-25 08:48:11,064 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:11,064 INFO L82 PathProgramCache]: Analyzing trace with hash 235347411, now seen corresponding path program 126 times [2018-07-25 08:48:11,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:11,738 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 08:48:11,739 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:11,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:48:11,739 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:48:11,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:48:11,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:48:11,741 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 129 states. [2018-07-25 08:48:12,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:12,082 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 08:48:12,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:48:12,082 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 256 [2018-07-25 08:48:12,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:12,083 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:48:12,083 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:48:12,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:48:12,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:48:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 08:48:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:48:12,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-07-25 08:48:12,089 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-07-25 08:48:12,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:12,090 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-07-25 08:48:12,090 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:48:12,090 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-07-25 08:48:12,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:48:12,091 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:12,091 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-07-25 08:48:12,091 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:12,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1464352627, now seen corresponding path program 127 times [2018-07-25 08:48:12,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:12,562 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 08:48:12,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:12,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:48:12,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:48:12,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:48:12,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:48:12,566 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 130 states. [2018-07-25 08:48:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:12,692 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 08:48:12,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:48:12,692 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 08:48:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:12,693 INFO L225 Difference]: With dead ends: 263 [2018-07-25 08:48:12,693 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 08:48:12,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:48:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 08:48:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 08:48:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:48:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-07-25 08:48:12,700 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-07-25 08:48:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:12,700 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-07-25 08:48:12,700 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:48:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-07-25 08:48:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:48:12,702 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:12,702 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-07-25 08:48:12,702 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:12,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1506450631, now seen corresponding path program 128 times [2018-07-25 08:48:12,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:13,206 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 08:48:13,207 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:13,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:48:13,207 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:48:13,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:48:13,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:48:13,210 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 131 states. [2018-07-25 08:48:13,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:13,514 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 08:48:13,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:48:13,515 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 260 [2018-07-25 08:48:13,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:13,515 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:48:13,515 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:48:13,516 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:48:13,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:48:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-25 08:48:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:48:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-07-25 08:48:13,520 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-07-25 08:48:13,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:13,520 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-07-25 08:48:13,520 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:48:13,520 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-07-25 08:48:13,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:48:13,521 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:13,521 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-07-25 08:48:13,521 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:13,521 INFO L82 PathProgramCache]: Analyzing trace with hash 295129729, now seen corresponding path program 129 times [2018-07-25 08:48:13,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:13,996 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 08:48:13,996 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:13,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:48:13,997 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:48:13,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:48:13,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:48:13,999 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 132 states. [2018-07-25 08:48:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:14,320 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 08:48:14,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:48:14,320 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 08:48:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:14,321 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:48:14,321 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:48:14,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:48:14,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:48:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:48:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:48:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-07-25 08:48:14,327 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-07-25 08:48:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:14,327 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-07-25 08:48:14,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:48:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-07-25 08:48:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:48:14,328 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:14,328 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-07-25 08:48:14,329 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:14,329 INFO L82 PathProgramCache]: Analyzing trace with hash 151880123, now seen corresponding path program 130 times [2018-07-25 08:48:14,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:14,876 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 08:48:14,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:14,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:48:14,877 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:48:14,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:48:14,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:48:14,879 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 133 states. [2018-07-25 08:48:15,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:15,106 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 08:48:15,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:48:15,106 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 264 [2018-07-25 08:48:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:15,107 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:48:15,107 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:48:15,107 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:48:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:48:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-25 08:48:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:48:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-07-25 08:48:15,110 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-07-25 08:48:15,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:15,110 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-07-25 08:48:15,111 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:48:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-07-25 08:48:15,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:48:15,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:15,112 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-07-25 08:48:15,112 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:15,112 INFO L82 PathProgramCache]: Analyzing trace with hash -72037771, now seen corresponding path program 131 times [2018-07-25 08:48:15,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:15,665 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 08:48:15,666 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:15,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:48:15,666 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:48:15,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:48:15,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:48:15,669 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 134 states. [2018-07-25 08:48:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:16,031 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 08:48:16,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:48:16,031 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 08:48:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:16,032 INFO L225 Difference]: With dead ends: 271 [2018-07-25 08:48:16,032 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:48:16,034 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:48:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:48:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 08:48:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:48:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-07-25 08:48:16,038 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-07-25 08:48:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:16,039 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-07-25 08:48:16,039 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:48:16,039 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-07-25 08:48:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:48:16,040 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:16,040 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-07-25 08:48:16,040 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:16,041 INFO L82 PathProgramCache]: Analyzing trace with hash -508769105, now seen corresponding path program 132 times [2018-07-25 08:48:16,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:16,579 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 08:48:16,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:16,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:48:16,579 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:48:16,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:48:16,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:48:16,582 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 135 states. [2018-07-25 08:48:17,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:17,018 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 08:48:17,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:48:17,018 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 268 [2018-07-25 08:48:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:17,018 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:48:17,019 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:48:17,019 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:48:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:48:17,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 08:48:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:48:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-07-25 08:48:17,023 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-07-25 08:48:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:17,023 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-07-25 08:48:17,023 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:48:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-07-25 08:48:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:48:17,025 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:17,025 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-07-25 08:48:17,025 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:17,025 INFO L82 PathProgramCache]: Analyzing trace with hash 699213929, now seen corresponding path program 133 times [2018-07-25 08:48:17,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:17,581 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 08:48:17,582 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:17,582 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:48:17,582 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:48:17,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:48:17,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:48:17,585 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 136 states. [2018-07-25 08:48:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:17,839 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 08:48:17,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:48:17,839 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 08:48:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:17,840 INFO L225 Difference]: With dead ends: 275 [2018-07-25 08:48:17,840 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:48:17,841 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:48:17,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:48:17,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:48:17,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:48:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-07-25 08:48:17,845 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-07-25 08:48:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:17,846 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-07-25 08:48:17,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:48:17,846 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-07-25 08:48:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:48:17,847 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:17,847 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-07-25 08:48:17,847 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1929739683, now seen corresponding path program 134 times [2018-07-25 08:48:17,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:18,429 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 08:48:18,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:18,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:48:18,430 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:48:18,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:48:18,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:48:18,432 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 137 states. [2018-07-25 08:48:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:18,619 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 08:48:18,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:48:18,620 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 272 [2018-07-25 08:48:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:18,620 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:48:18,620 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:48:18,622 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 08:48:18,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:48:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-25 08:48:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:48:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-07-25 08:48:18,626 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-07-25 08:48:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:18,626 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-07-25 08:48:18,626 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:48:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-07-25 08:48:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:48:18,628 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:18,628 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-07-25 08:48:18,628 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:18,628 INFO L82 PathProgramCache]: Analyzing trace with hash -945984419, now seen corresponding path program 135 times [2018-07-25 08:48:18,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:19,344 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 08:48:19,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:19,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:48:19,344 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:48:19,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:48:19,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:48:19,346 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 138 states. [2018-07-25 08:48:19,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:19,760 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 08:48:19,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:48:19,760 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 08:48:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:19,761 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:48:19,761 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:48:19,762 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 08:48:19,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:48:19,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:48:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:48:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-07-25 08:48:19,766 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-07-25 08:48:19,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:19,766 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-07-25 08:48:19,766 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:48:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-07-25 08:48:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:48:19,767 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:19,767 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-07-25 08:48:19,767 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:19,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1442092183, now seen corresponding path program 136 times [2018-07-25 08:48:19,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:20,294 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 08:48:20,294 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:20,294 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:48:20,294 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:48:20,296 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:48:20,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:48:20,296 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 139 states. [2018-07-25 08:48:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:20,725 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 08:48:20,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:48:20,725 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 276 [2018-07-25 08:48:20,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:20,726 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:48:20,726 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:48:20,728 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:48:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:48:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-25 08:48:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:48:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-07-25 08:48:20,733 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-07-25 08:48:20,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:20,733 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-07-25 08:48:20,733 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:48:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-07-25 08:48:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:48:20,735 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:20,735 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-07-25 08:48:20,735 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:20,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1423796655, now seen corresponding path program 137 times [2018-07-25 08:48:20,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:21,435 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 08:48:21,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:21,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:48:21,436 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:48:21,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:48:21,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:48:21,439 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 140 states. [2018-07-25 08:48:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:21,831 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 08:48:21,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:48:21,831 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 08:48:21,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:21,831 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:48:21,831 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:48:21,832 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:48:21,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:48:21,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 08:48:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:48:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-07-25 08:48:21,837 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-07-25 08:48:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:21,837 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-07-25 08:48:21,837 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:48:21,838 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-07-25 08:48:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:48:21,839 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:21,839 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-07-25 08:48:21,839 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:21,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1826034059, now seen corresponding path program 138 times [2018-07-25 08:48:21,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:22,462 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 08:48:22,462 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:22,462 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:48:22,463 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:48:22,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:48:22,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:48:22,465 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 141 states. [2018-07-25 08:48:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:22,870 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 08:48:22,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:48:22,871 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 280 [2018-07-25 08:48:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:22,871 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:48:22,871 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:48:22,872 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:48:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:48:22,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 08:48:22,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:48:22,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-07-25 08:48:22,876 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-07-25 08:48:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:22,876 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-07-25 08:48:22,876 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:48:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-07-25 08:48:22,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:48:22,877 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:22,877 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-07-25 08:48:22,877 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:22,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1822841275, now seen corresponding path program 139 times [2018-07-25 08:48:22,877 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:23,483 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 08:48:23,484 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:23,484 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:48:23,484 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:48:23,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:48:23,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:48:23,486 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 142 states. [2018-07-25 08:48:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:23,936 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 08:48:23,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:48:23,936 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 08:48:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:23,937 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:48:23,937 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 08:48:23,938 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:48:23,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 08:48:23,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 08:48:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:48:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-07-25 08:48:23,941 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-07-25 08:48:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:23,941 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-07-25 08:48:23,941 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:48:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-07-25 08:48:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:48:23,942 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:23,942 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-07-25 08:48:23,942 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:23,942 INFO L82 PathProgramCache]: Analyzing trace with hash 596243583, now seen corresponding path program 140 times [2018-07-25 08:48:23,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:24,501 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 08:48:24,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:24,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:48:24,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:48:24,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:48:24,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:48:24,505 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 143 states. [2018-07-25 08:48:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:24,986 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 08:48:24,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:48:24,987 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 284 [2018-07-25 08:48:24,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:24,987 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:48:24,987 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:48:24,988 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:48:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:48:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-25 08:48:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:48:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-07-25 08:48:24,992 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-07-25 08:48:24,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:24,993 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-07-25 08:48:24,993 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:48:24,993 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-07-25 08:48:24,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:48:24,994 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:24,994 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-07-25 08:48:24,994 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1759484985, now seen corresponding path program 141 times [2018-07-25 08:48:24,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:25,610 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 08:48:25,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:25,611 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:48:25,611 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:48:25,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:48:25,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:48:25,613 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 144 states. [2018-07-25 08:48:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:26,081 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 08:48:26,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:48:26,081 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 08:48:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:26,082 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:48:26,082 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:48:26,084 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 08:48:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:48:26,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:48:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:48:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-07-25 08:48:26,087 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-07-25 08:48:26,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:26,088 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-07-25 08:48:26,088 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:48:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-07-25 08:48:26,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:48:26,089 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:26,089 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-07-25 08:48:26,090 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:26,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1351991949, now seen corresponding path program 142 times [2018-07-25 08:48:26,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:26,955 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 08:48:26,955 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:26,955 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:48:26,956 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:48:26,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:48:26,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:48:26,959 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 145 states. [2018-07-25 08:48:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:27,627 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 08:48:27,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:48:27,627 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 288 [2018-07-25 08:48:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:27,628 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:48:27,628 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:48:27,629 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:48:27,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:48:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-25 08:48:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:48:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-07-25 08:48:27,634 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-07-25 08:48:27,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:27,634 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-07-25 08:48:27,634 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:48:27,635 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-07-25 08:48:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:48:27,636 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:27,636 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-07-25 08:48:27,636 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:27,636 INFO L82 PathProgramCache]: Analyzing trace with hash 2110879789, now seen corresponding path program 143 times [2018-07-25 08:48:27,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:28,305 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 08:48:28,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:28,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:48:28,306 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:48:28,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:48:28,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:48:28,308 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 146 states. [2018-07-25 08:48:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:28,628 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 08:48:28,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:48:28,628 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 08:48:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:28,629 INFO L225 Difference]: With dead ends: 295 [2018-07-25 08:48:28,629 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:48:28,630 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:48:28,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:48:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 08:48:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:48:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-07-25 08:48:28,633 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-07-25 08:48:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:28,633 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-07-25 08:48:28,633 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:48:28,633 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-07-25 08:48:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:48:28,634 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:28,635 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-07-25 08:48:28,635 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:28,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965607, now seen corresponding path program 144 times [2018-07-25 08:48:28,635 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:29,233 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 08:48:29,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:29,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:48:29,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:48:29,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:48:29,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:48:29,236 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 147 states. [2018-07-25 08:48:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:29,425 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 08:48:29,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:48:29,425 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 292 [2018-07-25 08:48:29,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:29,426 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:48:29,426 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:48:29,427 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 08:48:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:48:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 08:48:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:48:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-07-25 08:48:29,430 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-07-25 08:48:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:29,431 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-07-25 08:48:29,431 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:48:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-07-25 08:48:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:48:29,432 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:29,432 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-07-25 08:48:29,432 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:29,432 INFO L82 PathProgramCache]: Analyzing trace with hash -842253791, now seen corresponding path program 145 times [2018-07-25 08:48:29,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:30,135 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 08:48:30,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:30,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:48:30,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:48:30,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:48:30,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:48:30,138 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 148 states. [2018-07-25 08:48:30,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:30,650 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 08:48:30,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:48:30,651 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 08:48:30,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:30,651 INFO L225 Difference]: With dead ends: 299 [2018-07-25 08:48:30,651 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 08:48:30,653 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:48:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 08:48:30,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 08:48:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:48:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-07-25 08:48:30,656 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-07-25 08:48:30,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:30,656 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-07-25 08:48:30,656 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:48:30,656 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-07-25 08:48:30,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:48:30,657 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:30,657 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-07-25 08:48:30,657 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1951989413, now seen corresponding path program 146 times [2018-07-25 08:48:30,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:31,374 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 08:48:31,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:31,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:48:31,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:48:31,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:48:31,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:48:31,379 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 149 states. [2018-07-25 08:48:32,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:32,152 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 08:48:32,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:48:32,152 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 296 [2018-07-25 08:48:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:32,153 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:48:32,153 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:48:32,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:48:32,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:48:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-25 08:48:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:48:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-07-25 08:48:32,158 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-07-25 08:48:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:32,158 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-07-25 08:48:32,158 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:48:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-07-25 08:48:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:48:32,159 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:32,159 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-07-25 08:48:32,159 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:32,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1038934549, now seen corresponding path program 147 times [2018-07-25 08:48:32,160 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:32,942 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 08:48:32,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:32,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:48:32,943 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:48:32,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:48:32,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:48:32,946 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 150 states. [2018-07-25 08:48:33,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:33,577 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 08:48:33,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:48:33,577 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 08:48:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:33,578 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:48:33,578 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:48:33,580 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:48:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:48:33,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:48:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:48:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-07-25 08:48:33,584 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-07-25 08:48:33,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:33,585 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-07-25 08:48:33,585 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:48:33,585 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-07-25 08:48:33,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:48:33,586 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:33,586 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-07-25 08:48:33,586 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:33,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1983741007, now seen corresponding path program 148 times [2018-07-25 08:48:33,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:34,511 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 08:48:34,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:34,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:48:34,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:48:34,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:48:34,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:48:34,514 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 151 states. [2018-07-25 08:48:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:34,761 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 08:48:34,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:48:34,762 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 300 [2018-07-25 08:48:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:34,762 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:48:34,762 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:48:34,764 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 08:48:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:48:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-25 08:48:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:48:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-07-25 08:48:34,767 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-07-25 08:48:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:34,767 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-07-25 08:48:34,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:48:34,767 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-07-25 08:48:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:48:34,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:34,768 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-07-25 08:48:34,768 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:34,768 INFO L82 PathProgramCache]: Analyzing trace with hash -590319607, now seen corresponding path program 149 times [2018-07-25 08:48:34,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:35,473 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 08:48:35,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:35,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:48:35,474 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:48:35,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:48:35,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:48:35,477 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 152 states. [2018-07-25 08:48:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:36,190 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 08:48:36,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:48:36,190 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 08:48:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:36,190 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:48:36,191 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:48:36,192 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:48:36,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:48:36,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 08:48:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:48:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-07-25 08:48:36,195 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-07-25 08:48:36,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:36,195 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-07-25 08:48:36,195 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:48:36,195 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-07-25 08:48:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:48:36,196 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:36,196 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-07-25 08:48:36,196 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:36,196 INFO L82 PathProgramCache]: Analyzing trace with hash -361407165, now seen corresponding path program 150 times [2018-07-25 08:48:36,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:36,887 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 08:48:36,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:36,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:48:36,887 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:48:36,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:48:36,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:48:36,889 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 153 states. [2018-07-25 08:48:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:37,479 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 08:48:37,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:48:37,479 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 304 [2018-07-25 08:48:37,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:37,479 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:48:37,480 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:48:37,480 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 08:48:37,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:48:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 08:48:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:48:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-07-25 08:48:37,483 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-07-25 08:48:37,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:37,483 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-07-25 08:48:37,483 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:48:37,484 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-07-25 08:48:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:48:37,484 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:37,484 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-07-25 08:48:37,485 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:37,485 INFO L82 PathProgramCache]: Analyzing trace with hash 580117501, now seen corresponding path program 151 times [2018-07-25 08:48:37,485 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:38,127 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 08:48:38,128 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:38,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:48:38,128 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:48:38,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:48:38,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:48:38,130 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 154 states. [2018-07-25 08:48:38,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:38,566 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 08:48:38,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:48:38,567 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 08:48:38,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:38,567 INFO L225 Difference]: With dead ends: 311 [2018-07-25 08:48:38,567 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 08:48:38,568 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:48:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 08:48:38,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 08:48:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:48:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-07-25 08:48:38,571 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-07-25 08:48:38,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:38,572 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-07-25 08:48:38,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:48:38,572 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-07-25 08:48:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:48:38,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:38,572 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-07-25 08:48:38,573 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:38,573 INFO L82 PathProgramCache]: Analyzing trace with hash -852777929, now seen corresponding path program 152 times [2018-07-25 08:48:38,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:39,263 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 08:48:39,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:39,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:48:39,263 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:48:39,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:48:39,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:48:39,266 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 155 states. [2018-07-25 08:48:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:39,923 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 08:48:39,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:48:39,923 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 308 [2018-07-25 08:48:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:39,924 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:48:39,924 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:48:39,926 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:48:39,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:48:39,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-25 08:48:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:48:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-07-25 08:48:39,931 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-07-25 08:48:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:39,931 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-07-25 08:48:39,931 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:48:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-07-25 08:48:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:48:39,933 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:39,933 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-07-25 08:48:39,933 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:39,933 INFO L82 PathProgramCache]: Analyzing trace with hash 819215857, now seen corresponding path program 153 times [2018-07-25 08:48:39,933 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:40,805 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 08:48:40,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:40,805 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:48:40,806 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:48:40,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:48:40,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:48:40,808 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 156 states. [2018-07-25 08:48:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:41,157 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 08:48:41,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:48:41,157 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 08:48:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:41,158 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:48:41,158 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:48:41,158 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:48:41,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:48:41,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:48:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:48:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-07-25 08:48:41,163 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-07-25 08:48:41,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:41,163 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-07-25 08:48:41,163 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:48:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-07-25 08:48:41,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:48:41,164 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:41,165 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-07-25 08:48:41,165 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:41,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1287475499, now seen corresponding path program 154 times [2018-07-25 08:48:41,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:41,889 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 08:48:41,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:41,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:48:41,889 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:48:41,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:48:41,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:48:41,892 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 157 states. [2018-07-25 08:48:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:42,604 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 08:48:42,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:48:42,604 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 312 [2018-07-25 08:48:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:42,605 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:48:42,605 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:48:42,606 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:48:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:48:42,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-25 08:48:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:48:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-07-25 08:48:42,610 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-07-25 08:48:42,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:42,610 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-07-25 08:48:42,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:48:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-07-25 08:48:42,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:48:42,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:42,611 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-07-25 08:48:42,611 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:42,611 INFO L82 PathProgramCache]: Analyzing trace with hash 313425381, now seen corresponding path program 155 times [2018-07-25 08:48:42,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:43,319 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 08:48:43,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:43,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:48:43,320 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:48:43,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:48:43,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:48:43,322 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 158 states. [2018-07-25 08:48:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:43,827 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 08:48:43,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:48:43,827 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 08:48:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:43,828 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:48:43,828 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:48:43,829 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:48:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:48:43,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 08:48:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:48:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-07-25 08:48:43,832 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-07-25 08:48:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:43,833 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-07-25 08:48:43,833 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:48:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-07-25 08:48:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:48:43,834 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:43,834 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-07-25 08:48:43,834 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:43,834 INFO L82 PathProgramCache]: Analyzing trace with hash 554132511, now seen corresponding path program 156 times [2018-07-25 08:48:43,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:44,578 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 08:48:44,578 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:44,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:48:44,579 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:48:44,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:48:44,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:48:44,582 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 159 states. [2018-07-25 08:48:45,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:45,281 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 08:48:45,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:48:45,281 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 316 [2018-07-25 08:48:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:45,282 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:48:45,282 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:48:45,283 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 08:48:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:48:45,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-25 08:48:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:48:45,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-07-25 08:48:45,288 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-07-25 08:48:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:45,289 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-07-25 08:48:45,289 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:48:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-07-25 08:48:45,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:48:45,290 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:45,290 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-07-25 08:48:45,291 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:45,291 INFO L82 PathProgramCache]: Analyzing trace with hash -54549543, now seen corresponding path program 157 times [2018-07-25 08:48:45,291 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:46,270 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 08:48:46,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:46,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:48:46,271 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:48:46,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:48:46,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:48:46,274 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 160 states. [2018-07-25 08:48:47,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:47,331 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 08:48:47,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:48:47,331 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 08:48:47,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:47,332 INFO L225 Difference]: With dead ends: 323 [2018-07-25 08:48:47,332 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 08:48:47,333 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 08:48:47,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 08:48:47,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 08:48:47,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:48:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-07-25 08:48:47,337 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-07-25 08:48:47,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:47,337 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-07-25 08:48:47,337 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:48:47,337 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-07-25 08:48:47,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:48:47,338 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:47,338 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-07-25 08:48:47,338 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:47,338 INFO L82 PathProgramCache]: Analyzing trace with hash -882451181, now seen corresponding path program 158 times [2018-07-25 08:48:47,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:48,183 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 08:48:48,183 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:48,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:48:48,183 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:48:48,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:48:48,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:48:48,186 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 161 states. [2018-07-25 08:48:48,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:48,499 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 08:48:48,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:48:48,499 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 320 [2018-07-25 08:48:48,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:48,499 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:48:48,500 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:48:48,501 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 08:48:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:48:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-25 08:48:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:48:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-07-25 08:48:48,505 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-07-25 08:48:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:48,505 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-07-25 08:48:48,505 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:48:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-07-25 08:48:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:48:48,506 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:48,506 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-07-25 08:48:48,506 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:48,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1926975539, now seen corresponding path program 159 times [2018-07-25 08:48:48,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:49,345 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 08:48:49,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:49,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:48:49,345 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:48:49,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:48:49,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:48:49,348 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 162 states. [2018-07-25 08:48:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:50,249 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 08:48:50,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:48:50,250 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 08:48:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:50,250 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:48:50,250 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:48:50,252 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:48:50,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:48:50,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 08:48:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:48:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-07-25 08:48:50,256 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-07-25 08:48:50,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:50,256 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-07-25 08:48:50,256 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:48:50,256 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-07-25 08:48:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:48:50,257 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:50,257 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-07-25 08:48:50,257 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:50,258 INFO L82 PathProgramCache]: Analyzing trace with hash -692536313, now seen corresponding path program 160 times [2018-07-25 08:48:50,258 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:51,172 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 08:48:51,172 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:51,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:48:51,173 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:48:51,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:48:51,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:48:51,176 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 163 states. [2018-07-25 08:48:52,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:52,206 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 08:48:52,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:48:52,206 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 324 [2018-07-25 08:48:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:52,207 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:48:52,207 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:48:52,208 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:48:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:48:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-25 08:48:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:48:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-07-25 08:48:52,211 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-07-25 08:48:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:52,212 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-07-25 08:48:52,212 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:48:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-07-25 08:48:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:48:52,213 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:52,213 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-07-25 08:48:52,213 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:52,213 INFO L82 PathProgramCache]: Analyzing trace with hash 192586177, now seen corresponding path program 161 times [2018-07-25 08:48:52,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:53,069 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 08:48:53,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:53,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:48:53,070 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:48:53,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:48:53,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:48:53,074 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 164 states. [2018-07-25 08:48:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:53,768 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 08:48:53,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:48:53,768 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 08:48:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:53,768 INFO L225 Difference]: With dead ends: 331 [2018-07-25 08:48:53,769 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 08:48:53,770 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:48:53,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 08:48:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 08:48:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:48:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-07-25 08:48:53,773 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-07-25 08:48:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:53,774 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-07-25 08:48:53,774 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:48:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-07-25 08:48:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:48:53,775 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:53,775 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-07-25 08:48:53,775 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:53,775 INFO L82 PathProgramCache]: Analyzing trace with hash 391774459, now seen corresponding path program 162 times [2018-07-25 08:48:53,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:54,760 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 08:48:54,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:54,761 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:48:54,761 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:48:54,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:48:54,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:48:54,764 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 165 states. [2018-07-25 08:48:55,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:55,049 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 08:48:55,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:48:55,049 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 328 [2018-07-25 08:48:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:55,050 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:48:55,050 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:48:55,051 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:48:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:48:55,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 08:48:55,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:48:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-07-25 08:48:55,054 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-07-25 08:48:55,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:55,055 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-07-25 08:48:55,055 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:48:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-07-25 08:48:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:48:55,056 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:55,056 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-07-25 08:48:55,056 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:55,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1461814859, now seen corresponding path program 163 times [2018-07-25 08:48:55,056 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:55,925 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 08:48:55,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:55,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:48:55,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:48:55,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:48:55,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:48:55,929 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 166 states. [2018-07-25 08:48:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:56,400 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 08:48:56,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:48:56,401 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 08:48:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:56,401 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:48:56,401 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 08:48:56,403 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:48:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 08:48:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 08:48:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:48:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-07-25 08:48:56,406 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-07-25 08:48:56,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:56,406 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-07-25 08:48:56,406 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:48:56,406 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-07-25 08:48:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:48:56,407 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:56,407 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-07-25 08:48:56,407 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash -349721617, now seen corresponding path program 164 times [2018-07-25 08:48:56,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:57,232 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 08:48:57,233 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:57,233 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:48:57,233 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:48:57,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:48:57,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:48:57,236 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 167 states. [2018-07-25 08:48:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:58,082 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 08:48:58,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:48:58,082 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 332 [2018-07-25 08:48:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:58,083 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:48:58,083 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:48:58,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:48:58,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:48:58,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-25 08:48:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:48:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-07-25 08:48:58,089 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-07-25 08:48:58,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:58,089 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-07-25 08:48:58,089 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:48:58,090 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-07-25 08:48:58,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:48:58,091 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:58,091 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-07-25 08:48:58,091 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:58,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1074972759, now seen corresponding path program 165 times [2018-07-25 08:48:58,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:59,057 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 08:48:59,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:59,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:48:59,058 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:48:59,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:48:59,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:48:59,061 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 168 states. [2018-07-25 08:48:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:59,983 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 08:48:59,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:48:59,983 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 08:48:59,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:59,983 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:48:59,984 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:48:59,984 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:48:59,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:48:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 08:48:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:48:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-07-25 08:48:59,987 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-07-25 08:48:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:59,988 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-07-25 08:48:59,988 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:48:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-07-25 08:48:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:48:59,989 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:59,989 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-07-25 08:48:59,989 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:59,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2038349027, now seen corresponding path program 166 times [2018-07-25 08:48:59,989 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:00,905 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 08:49:00,905 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:00,905 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:49:00,906 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:49:00,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:49:00,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:49:00,909 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 169 states. [2018-07-25 08:49:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:01,986 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 08:49:01,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:49:01,986 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 336 [2018-07-25 08:49:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:01,987 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:49:01,987 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:49:01,988 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:49:01,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:49:01,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-25 08:49:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:49:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-07-25 08:49:01,991 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-07-25 08:49:01,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:01,991 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-07-25 08:49:01,991 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:49:01,992 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-07-25 08:49:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:49:01,992 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:01,992 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-07-25 08:49:01,993 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:01,993 INFO L82 PathProgramCache]: Analyzing trace with hash 348380061, now seen corresponding path program 167 times [2018-07-25 08:49:01,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:02,877 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 08:49:02,877 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:02,877 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:49:02,877 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:49:02,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:49:02,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:49:02,880 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 170 states. [2018-07-25 08:49:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:04,056 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 08:49:04,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:49:04,056 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 08:49:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:04,057 INFO L225 Difference]: With dead ends: 343 [2018-07-25 08:49:04,057 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 08:49:04,059 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:49:04,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 08:49:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 08:49:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:49:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-07-25 08:49:04,063 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-07-25 08:49:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:04,063 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-07-25 08:49:04,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:49:04,064 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-07-25 08:49:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:49:04,065 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:04,065 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-07-25 08:49:04,065 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:04,065 INFO L82 PathProgramCache]: Analyzing trace with hash -214158377, now seen corresponding path program 168 times [2018-07-25 08:49:04,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:05,192 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 08:49:05,193 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:05,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:49:05,193 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:49:05,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:49:05,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:49:05,196 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 171 states. [2018-07-25 08:49:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:06,333 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 08:49:06,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:49:06,333 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 340 [2018-07-25 08:49:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:06,334 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:49:06,334 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:49:06,335 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:49:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:49:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-25 08:49:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:49:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-07-25 08:49:06,339 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-07-25 08:49:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:06,339 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-07-25 08:49:06,339 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:49:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-07-25 08:49:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:49:06,340 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:06,340 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-07-25 08:49:06,340 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:06,340 INFO L82 PathProgramCache]: Analyzing trace with hash 352282001, now seen corresponding path program 169 times [2018-07-25 08:49:06,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:07,448 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 08:49:07,448 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:07,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:49:07,448 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:49:07,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:49:07,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:49:07,453 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 172 states. [2018-07-25 08:49:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:08,727 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 08:49:08,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:49:08,727 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 08:49:08,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:08,728 INFO L225 Difference]: With dead ends: 347 [2018-07-25 08:49:08,728 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 08:49:08,730 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:49:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 08:49:08,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 08:49:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:49:08,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-07-25 08:49:08,734 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-07-25 08:49:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:08,734 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-07-25 08:49:08,734 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:49:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-07-25 08:49:08,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:49:08,735 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:08,735 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-07-25 08:49:08,735 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:08,736 INFO L82 PathProgramCache]: Analyzing trace with hash -759361333, now seen corresponding path program 170 times [2018-07-25 08:49:08,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:09,922 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 08:49:09,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:09,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:49:09,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:49:09,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:49:09,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:49:09,928 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 173 states. [2018-07-25 08:49:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:11,269 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 08:49:11,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:49:11,270 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 344 [2018-07-25 08:49:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:11,271 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:49:11,271 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 08:49:11,273 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:49:11,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 08:49:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-25 08:49:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:49:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-07-25 08:49:11,278 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-07-25 08:49:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:11,279 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-07-25 08:49:11,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:49:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-07-25 08:49:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:49:11,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:11,280 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-07-25 08:49:11,281 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:11,281 INFO L82 PathProgramCache]: Analyzing trace with hash 398251397, now seen corresponding path program 171 times [2018-07-25 08:49:11,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:12,495 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 08:49:12,495 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:12,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:49:12,496 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:49:12,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:49:12,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:49:12,500 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 174 states. [2018-07-25 08:49:13,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:13,462 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 08:49:13,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:49:13,462 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-25 08:49:13,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:13,463 INFO L225 Difference]: With dead ends: 351 [2018-07-25 08:49:13,463 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 08:49:13,465 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:49:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 08:49:13,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 08:49:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 08:49:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-07-25 08:49:13,469 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 346 [2018-07-25 08:49:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:13,469 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-07-25 08:49:13,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:49:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-07-25 08:49:13,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 08:49:13,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:13,470 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1] [2018-07-25 08:49:13,470 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:13,471 INFO L82 PathProgramCache]: Analyzing trace with hash 467555263, now seen corresponding path program 172 times [2018-07-25 08:49:13,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:14,462 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 08:49:14,462 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:14,462 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:49:14,462 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:49:14,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:49:14,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:49:14,466 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 175 states. [2018-07-25 08:49:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:14,849 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 08:49:14,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:49:14,849 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 348 [2018-07-25 08:49:14,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:14,850 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:49:14,850 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 08:49:14,851 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 08:49:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 08:49:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-07-25 08:49:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:49:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-07-25 08:49:14,857 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 348 [2018-07-25 08:49:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:14,857 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-07-25 08:49:14,857 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:49:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-07-25 08:49:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:49:14,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:14,859 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1] [2018-07-25 08:49:14,859 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1650906247, now seen corresponding path program 173 times [2018-07-25 08:49:14,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:16,176 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 08:49:16,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:16,177 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:49:16,177 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:49:16,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:49:16,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:49:16,179 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 176 states. [2018-07-25 08:49:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:16,722 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 08:49:16,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:49:16,722 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-25 08:49:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:16,723 INFO L225 Difference]: With dead ends: 355 [2018-07-25 08:49:16,723 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 08:49:16,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:49:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 08:49:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 08:49:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 08:49:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-07-25 08:49:16,727 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 350 [2018-07-25 08:49:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:16,728 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-07-25 08:49:16,728 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:49:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-07-25 08:49:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 08:49:16,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:16,729 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1] [2018-07-25 08:49:16,730 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:16,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1677919053, now seen corresponding path program 174 times [2018-07-25 08:49:16,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:17,879 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 08:49:17,879 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:17,879 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:49:17,879 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:49:17,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:49:17,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:49:17,884 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 177 states. [2018-07-25 08:49:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:19,448 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 08:49:19,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:49:19,449 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 352 [2018-07-25 08:49:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:19,449 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:49:19,449 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:49:19,451 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:49:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:49:19,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-25 08:49:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:49:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-07-25 08:49:19,455 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 352 [2018-07-25 08:49:19,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:19,455 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-07-25 08:49:19,455 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:49:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-07-25 08:49:19,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:49:19,456 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:19,456 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1] [2018-07-25 08:49:19,457 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:19,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1867421843, now seen corresponding path program 175 times [2018-07-25 08:49:19,457 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:20,706 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 08:49:20,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:20,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:49:20,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:49:20,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:49:20,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:49:20,712 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 178 states. [2018-07-25 08:49:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:22,276 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 08:49:22,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:49:22,276 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-25 08:49:22,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:22,277 INFO L225 Difference]: With dead ends: 359 [2018-07-25 08:49:22,277 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 08:49:22,279 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:49:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 08:49:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 08:49:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 08:49:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2018-07-25 08:49:22,283 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 354 [2018-07-25 08:49:22,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:22,283 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2018-07-25 08:49:22,283 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:49:22,283 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2018-07-25 08:49:22,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 08:49:22,284 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:22,284 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1] [2018-07-25 08:49:22,284 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:22,285 INFO L82 PathProgramCache]: Analyzing trace with hash 703990695, now seen corresponding path program 176 times [2018-07-25 08:49:22,285 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:23,391 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 08:49:23,392 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:23,392 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:49:23,392 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:49:23,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:49:23,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:49:23,396 INFO L87 Difference]: Start difference. First operand 357 states and 357 transitions. Second operand 179 states. [2018-07-25 08:49:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:24,037 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 08:49:24,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:49:24,037 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 356 [2018-07-25 08:49:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:24,038 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:49:24,038 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 08:49:24,040 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 08:49:24,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 08:49:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-07-25 08:49:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 08:49:24,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-07-25 08:49:24,044 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 356 [2018-07-25 08:49:24,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:24,045 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-07-25 08:49:24,045 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:49:24,045 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-07-25 08:49:24,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 08:49:24,046 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:24,046 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1] [2018-07-25 08:49:24,046 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:24,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2069722783, now seen corresponding path program 177 times [2018-07-25 08:49:24,046 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:25,318 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 08:49:25,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:25,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:49:25,319 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:49:25,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:49:25,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:49:25,324 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 180 states. [2018-07-25 08:49:26,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:26,550 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 08:49:26,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:49:26,550 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-25 08:49:26,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:26,551 INFO L225 Difference]: With dead ends: 363 [2018-07-25 08:49:26,551 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 08:49:26,553 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:49:26,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 08:49:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 08:49:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 08:49:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-07-25 08:49:26,557 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 358 [2018-07-25 08:49:26,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:26,557 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-07-25 08:49:26,557 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:49:26,557 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-07-25 08:49:26,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 08:49:26,558 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:26,558 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1] [2018-07-25 08:49:26,558 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash -433684325, now seen corresponding path program 178 times [2018-07-25 08:49:26,559 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:27,714 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 08:49:27,714 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:27,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:49:27,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:49:27,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:49:27,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:49:27,717 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 181 states. [2018-07-25 08:49:29,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:29,191 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 08:49:29,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:49:29,192 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 360 [2018-07-25 08:49:29,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:29,193 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:49:29,193 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 08:49:29,194 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 08:49:29,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 08:49:29,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-25 08:49:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:49:29,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-07-25 08:49:29,200 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 360 [2018-07-25 08:49:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:29,200 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-07-25 08:49:29,200 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:49:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-07-25 08:49:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:49:29,201 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:29,202 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1] [2018-07-25 08:49:29,202 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:29,202 INFO L82 PathProgramCache]: Analyzing trace with hash -158756523, now seen corresponding path program 179 times [2018-07-25 08:49:29,202 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:30,497 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 08:49:30,498 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:30,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:49:30,498 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:49:30,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:49:30,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:49:30,502 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 182 states. [2018-07-25 08:49:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:30,905 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 08:49:30,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:49:30,905 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-25 08:49:30,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:30,906 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:49:30,906 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 08:49:30,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:49:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 08:49:30,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 08:49:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 08:49:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-07-25 08:49:30,910 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 362 [2018-07-25 08:49:30,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:30,911 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-07-25 08:49:30,911 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:49:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-07-25 08:49:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 08:49:30,912 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:30,912 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1] [2018-07-25 08:49:30,912 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:30,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2053856143, now seen corresponding path program 180 times [2018-07-25 08:49:30,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:32,172 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 08:49:32,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:32,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:49:32,173 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:49:32,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:49:32,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:49:32,175 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 183 states. [2018-07-25 08:49:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:33,965 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 08:49:33,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:49:33,965 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 364 [2018-07-25 08:49:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:33,966 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:49:33,966 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 08:49:33,967 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:49:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 08:49:33,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-25 08:49:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 08:49:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-07-25 08:49:33,971 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 364 [2018-07-25 08:49:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:33,971 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-07-25 08:49:33,971 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:49:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-07-25 08:49:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 08:49:33,972 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:33,972 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1] [2018-07-25 08:49:33,972 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:33,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1929150647, now seen corresponding path program 181 times [2018-07-25 08:49:33,973 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:35,299 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 08:49:35,300 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:35,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:49:35,300 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:49:35,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:49:35,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:49:35,305 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 184 states. [2018-07-25 08:49:36,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:36,001 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 08:49:36,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:49:36,002 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-25 08:49:36,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:36,002 INFO L225 Difference]: With dead ends: 371 [2018-07-25 08:49:36,002 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 08:49:36,004 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:49:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 08:49:36,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 08:49:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 08:49:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2018-07-25 08:49:36,009 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 366 [2018-07-25 08:49:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:36,009 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2018-07-25 08:49:36,009 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:49:36,009 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2018-07-25 08:49:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 08:49:36,010 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:36,010 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1] [2018-07-25 08:49:36,010 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:36,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1512152195, now seen corresponding path program 182 times [2018-07-25 08:49:36,011 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:37,271 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 08:49:37,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:37,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:49:37,271 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:49:37,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:49:37,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:49:37,276 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 185 states. [2018-07-25 08:49:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:39,102 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 08:49:39,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:49:39,102 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 368 [2018-07-25 08:49:39,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:39,103 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:49:39,103 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 08:49:39,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:49:39,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 08:49:39,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-25 08:49:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 08:49:39,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-07-25 08:49:39,109 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 368 [2018-07-25 08:49:39,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:39,109 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-07-25 08:49:39,109 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:49:39,109 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-07-25 08:49:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 08:49:39,110 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:39,110 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1] [2018-07-25 08:49:39,110 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:39,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1479365437, now seen corresponding path program 183 times [2018-07-25 08:49:39,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:40,378 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 08:49:40,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:40,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:49:40,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:49:40,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:49:40,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:49:40,382 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 186 states. [2018-07-25 08:49:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:40,881 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 08:49:40,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:49:40,881 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-25 08:49:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:40,882 INFO L225 Difference]: With dead ends: 375 [2018-07-25 08:49:40,882 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 08:49:40,883 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:49:40,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 08:49:40,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 08:49:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 08:49:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-07-25 08:49:40,887 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 370 [2018-07-25 08:49:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:40,887 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-07-25 08:49:40,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:49:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-07-25 08:49:40,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 08:49:40,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:40,888 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1] [2018-07-25 08:49:40,888 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:40,889 INFO L82 PathProgramCache]: Analyzing trace with hash 36062071, now seen corresponding path program 184 times [2018-07-25 08:49:40,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:42,291 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 08:49:42,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:42,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:49:42,292 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:49:42,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:49:42,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:49:42,297 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 187 states. [2018-07-25 08:49:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:44,444 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 08:49:44,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:49:44,444 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 372 [2018-07-25 08:49:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:44,445 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:49:44,445 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:49:44,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:49:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:49:44,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-07-25 08:49:44,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 08:49:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-07-25 08:49:44,452 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 372 [2018-07-25 08:49:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:44,452 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-07-25 08:49:44,452 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:49:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-07-25 08:49:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 08:49:44,453 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:44,453 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1] [2018-07-25 08:49:44,454 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:44,454 INFO L82 PathProgramCache]: Analyzing trace with hash 295963953, now seen corresponding path program 185 times [2018-07-25 08:49:44,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:45,916 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 08:49:45,916 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:45,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:49:45,917 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:49:45,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:49:45,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:49:45,922 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 188 states. [2018-07-25 08:49:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:46,760 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 08:49:46,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:49:46,760 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-25 08:49:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:46,761 INFO L225 Difference]: With dead ends: 379 [2018-07-25 08:49:46,761 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 08:49:46,763 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:49:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 08:49:46,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 08:49:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 08:49:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-07-25 08:49:46,767 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 374 [2018-07-25 08:49:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:46,768 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-07-25 08:49:46,768 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:49:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-07-25 08:49:46,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 08:49:46,769 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:46,769 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1] [2018-07-25 08:49:46,769 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:46,769 INFO L82 PathProgramCache]: Analyzing trace with hash 953569387, now seen corresponding path program 186 times [2018-07-25 08:49:46,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:48,190 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 08:49:48,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:48,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:49:48,191 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:49:48,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:49:48,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:49:48,196 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 189 states. [2018-07-25 08:49:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:49,622 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 08:49:49,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:49:49,622 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 376 [2018-07-25 08:49:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:49,623 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:49:49,623 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 08:49:49,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:49:49,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 08:49:49,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-25 08:49:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 08:49:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-07-25 08:49:49,630 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 376 [2018-07-25 08:49:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:49,630 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-07-25 08:49:49,630 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:49:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-07-25 08:49:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 08:49:49,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:49,631 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1] [2018-07-25 08:49:49,632 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:49,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1552198949, now seen corresponding path program 187 times [2018-07-25 08:49:49,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:51,100 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 08:49:51,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:51,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:49:51,101 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:49:51,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:49:51,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:49:51,105 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 190 states. [2018-07-25 08:49:53,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:53,244 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 08:49:53,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:49:53,244 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-25 08:49:53,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:53,245 INFO L225 Difference]: With dead ends: 383 [2018-07-25 08:49:53,245 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 08:49:53,247 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:49:53,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 08:49:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 08:49:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 08:49:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2018-07-25 08:49:53,251 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 378 [2018-07-25 08:49:53,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:53,252 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2018-07-25 08:49:53,252 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:49:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2018-07-25 08:49:53,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 08:49:53,253 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:53,253 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1] [2018-07-25 08:49:53,253 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:53,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1309590367, now seen corresponding path program 188 times [2018-07-25 08:49:53,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:54,659 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 08:49:54,659 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:54,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:49:54,660 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:49:54,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:49:54,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:49:54,664 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 191 states. [2018-07-25 08:49:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:55,612 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 08:49:55,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:49:55,612 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 380 [2018-07-25 08:49:55,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:55,613 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:49:55,613 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 08:49:55,614 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:49:55,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 08:49:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-07-25 08:49:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 08:49:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-07-25 08:49:55,619 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 380 [2018-07-25 08:49:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:55,619 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-07-25 08:49:55,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:49:55,619 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-07-25 08:49:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 08:49:55,621 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:55,621 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1] [2018-07-25 08:49:55,621 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash 90977049, now seen corresponding path program 189 times [2018-07-25 08:49:55,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:57,096 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 08:49:57,097 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:57,097 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:49:57,097 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:49:57,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:49:57,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:49:57,100 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 192 states. [2018-07-25 08:49:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:57,973 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 08:49:57,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:49:57,974 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-25 08:49:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:57,974 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:49:57,974 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 08:49:57,976 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:49:57,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 08:49:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 08:49:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 08:49:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-07-25 08:49:57,980 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 382 [2018-07-25 08:49:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:57,981 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-07-25 08:49:57,981 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:49:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-07-25 08:49:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 08:49:57,982 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:57,982 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1] [2018-07-25 08:49:57,982 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:57,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1529650259, now seen corresponding path program 190 times [2018-07-25 08:49:57,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:59,434 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 08:49:59,434 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:59,434 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:49:59,435 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:49:59,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:49:59,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:49:59,440 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 193 states. [2018-07-25 08:50:01,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:01,169 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 08:50:01,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:50:01,169 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 384 [2018-07-25 08:50:01,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:01,170 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:50:01,170 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 08:50:01,172 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:50:01,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 08:50:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-25 08:50:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:50:01,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-07-25 08:50:01,176 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 384 [2018-07-25 08:50:01,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:01,176 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-07-25 08:50:01,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:50:01,176 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-07-25 08:50:01,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 08:50:01,178 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:01,178 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1] [2018-07-25 08:50:01,178 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:01,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1115135757, now seen corresponding path program 191 times [2018-07-25 08:50:01,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:02,748 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 08:50:02,749 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:02,749 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:50:02,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:50:02,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:50:02,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:50:02,754 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 194 states. [2018-07-25 08:50:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:05,099 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 08:50:05,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:50:05,099 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-25 08:50:05,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:05,100 INFO L225 Difference]: With dead ends: 391 [2018-07-25 08:50:05,100 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 08:50:05,102 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:50:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 08:50:05,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 08:50:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 08:50:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-07-25 08:50:05,108 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 386 [2018-07-25 08:50:05,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:05,109 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-07-25 08:50:05,109 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:50:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-07-25 08:50:05,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 08:50:05,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:05,111 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1] [2018-07-25 08:50:05,111 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:05,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2096309433, now seen corresponding path program 192 times [2018-07-25 08:50:05,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:06,692 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 08:50:06,692 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:06,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:50:06,693 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:50:06,696 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:50:06,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:50:06,699 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 195 states. [2018-07-25 08:50:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:08,912 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 08:50:08,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:50:08,913 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 388 [2018-07-25 08:50:08,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:08,914 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:50:08,914 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 08:50:08,916 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:50:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 08:50:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-07-25 08:50:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:50:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-07-25 08:50:08,921 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 388 [2018-07-25 08:50:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:08,921 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-07-25 08:50:08,922 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:50:08,922 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-07-25 08:50:08,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 08:50:08,923 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:08,923 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1] [2018-07-25 08:50:08,923 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:08,923 INFO L82 PathProgramCache]: Analyzing trace with hash -213651199, now seen corresponding path program 193 times [2018-07-25 08:50:08,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:10,489 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 08:50:10,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:10,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:50:10,489 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:50:10,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:50:10,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:50:10,493 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 196 states. [2018-07-25 08:50:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:12,061 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 08:50:12,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:50:12,061 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-25 08:50:12,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:12,062 INFO L225 Difference]: With dead ends: 395 [2018-07-25 08:50:12,062 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 08:50:12,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:50:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 08:50:12,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 08:50:12,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 08:50:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2018-07-25 08:50:12,069 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 390 [2018-07-25 08:50:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:12,069 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2018-07-25 08:50:12,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:50:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2018-07-25 08:50:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 08:50:12,070 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:12,070 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1] [2018-07-25 08:50:12,071 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:12,071 INFO L82 PathProgramCache]: Analyzing trace with hash 839680059, now seen corresponding path program 194 times [2018-07-25 08:50:12,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:13,675 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 08:50:13,675 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:13,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:50:13,675 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:50:13,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:50:13,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:50:13,681 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand 197 states. [2018-07-25 08:50:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:14,827 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 08:50:14,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:50:14,827 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 392 [2018-07-25 08:50:14,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:14,828 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:50:14,828 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 08:50:14,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:50:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 08:50:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-25 08:50:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 08:50:14,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-07-25 08:50:14,835 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 392 [2018-07-25 08:50:14,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:14,835 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-07-25 08:50:14,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:50:14,835 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-07-25 08:50:14,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 08:50:14,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:14,836 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1] [2018-07-25 08:50:14,836 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:14,837 INFO L82 PathProgramCache]: Analyzing trace with hash -521262859, now seen corresponding path program 195 times [2018-07-25 08:50:14,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,436 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 08:50:16,437 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:16,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:50:16,437 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:50:16,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:50:16,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:50:16,442 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 198 states. [2018-07-25 08:50:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:17,354 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 08:50:17,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:50:17,354 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-25 08:50:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:17,355 INFO L225 Difference]: With dead ends: 399 [2018-07-25 08:50:17,356 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 08:50:17,357 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:50:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 08:50:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 08:50:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 08:50:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-07-25 08:50:17,362 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 394 [2018-07-25 08:50:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:17,362 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-07-25 08:50:17,362 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:50:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-07-25 08:50:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 08:50:17,364 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:17,364 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1] [2018-07-25 08:50:17,364 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:17,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1577618223, now seen corresponding path program 196 times [2018-07-25 08:50:17,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:19,014 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 08:50:19,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:19,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:50:19,015 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:50:19,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:50:19,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:50:19,020 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 199 states. [2018-07-25 08:50:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:20,088 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 08:50:20,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:50:20,088 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 396 [2018-07-25 08:50:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:20,089 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:50:20,089 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 08:50:20,092 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:50:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 08:50:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-07-25 08:50:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 08:50:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-07-25 08:50:20,097 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 396 [2018-07-25 08:50:20,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:20,097 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-07-25 08:50:20,097 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:50:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-07-25 08:50:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 08:50:20,098 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:20,098 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1] [2018-07-25 08:50:20,099 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:20,099 INFO L82 PathProgramCache]: Analyzing trace with hash -32291095, now seen corresponding path program 197 times [2018-07-25 08:50:20,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:21,779 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 08:50:21,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:21,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:50:21,780 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:50:21,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:50:21,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:50:21,784 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 200 states. [2018-07-25 08:50:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:22,871 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 08:50:22,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:50:22,871 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-25 08:50:22,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:22,872 INFO L225 Difference]: With dead ends: 403 [2018-07-25 08:50:22,872 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 08:50:22,874 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:50:22,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 08:50:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 08:50:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 08:50:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2018-07-25 08:50:22,878 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 398 [2018-07-25 08:50:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:22,878 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2018-07-25 08:50:22,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:50:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2018-07-25 08:50:22,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 08:50:22,879 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:22,880 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1] [2018-07-25 08:50:22,880 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:22,880 INFO L82 PathProgramCache]: Analyzing trace with hash -966919133, now seen corresponding path program 198 times [2018-07-25 08:50:22,880 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:24,529 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 08:50:24,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:24,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:50:24,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:50:24,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:50:24,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:50:24,536 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 201 states. [2018-07-25 08:50:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:26,183 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 08:50:26,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:50:26,183 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 400 [2018-07-25 08:50:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:26,184 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:50:26,184 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 08:50:26,186 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:50:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 08:50:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-25 08:50:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 08:50:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-07-25 08:50:26,191 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 400 [2018-07-25 08:50:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:26,191 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-07-25 08:50:26,191 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:50:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-07-25 08:50:26,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 08:50:26,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:26,193 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1] [2018-07-25 08:50:26,193 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:26,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1496298787, now seen corresponding path program 199 times [2018-07-25 08:50:26,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:27,883 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 08:50:27,884 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:27,884 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:50:27,884 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:50:27,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:50:27,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:50:27,890 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 202 states. [2018-07-25 08:50:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:30,071 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 08:50:30,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:50:30,071 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-25 08:50:30,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:30,072 INFO L225 Difference]: With dead ends: 407 [2018-07-25 08:50:30,072 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 08:50:30,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:50:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 08:50:30,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 08:50:30,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 08:50:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 405 transitions. [2018-07-25 08:50:30,078 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 405 transitions. Word has length 402 [2018-07-25 08:50:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:30,079 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 405 transitions. [2018-07-25 08:50:30,079 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:50:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 405 transitions. [2018-07-25 08:50:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 08:50:30,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:30,080 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1] [2018-07-25 08:50:30,080 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:30,081 INFO L82 PathProgramCache]: Analyzing trace with hash 870961943, now seen corresponding path program 200 times [2018-07-25 08:50:30,081 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:31,823 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 08:50:31,823 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:31,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:50:31,823 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:50:31,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:50:31,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:50:31,828 INFO L87 Difference]: Start difference. First operand 405 states and 405 transitions. Second operand 203 states. [2018-07-25 08:50:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:34,700 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 08:50:34,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:50:34,701 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 404 [2018-07-25 08:50:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:34,702 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:50:34,702 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 08:50:34,705 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:50:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 08:50:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-07-25 08:50:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 08:50:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-07-25 08:50:34,710 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-07-25 08:50:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:34,710 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-07-25 08:50:34,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:50:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-07-25 08:50:34,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 08:50:34,712 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:34,712 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1] [2018-07-25 08:50:34,712 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash -524143407, now seen corresponding path program 201 times [2018-07-25 08:50:34,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:36,383 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 08:50:36,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:36,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:50:36,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:50:36,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:50:36,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:50:36,391 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 204 states. [2018-07-25 08:50:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:39,113 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 08:50:39,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:50:39,114 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-25 08:50:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:39,115 INFO L225 Difference]: With dead ends: 411 [2018-07-25 08:50:39,115 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 08:50:39,117 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:50:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 08:50:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 08:50:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 08:50:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-07-25 08:50:39,122 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 406 [2018-07-25 08:50:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:39,123 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-07-25 08:50:39,123 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:50:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-07-25 08:50:39,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 08:50:39,124 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:39,124 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1] [2018-07-25 08:50:39,124 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1190588405, now seen corresponding path program 202 times [2018-07-25 08:50:39,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:40,978 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 08:50:40,978 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:40,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:50:40,978 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:50:40,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:50:40,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:50:40,981 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 205 states. [2018-07-25 08:50:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:42,196 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 08:50:42,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:50:42,196 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 408 [2018-07-25 08:50:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:42,197 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:50:42,197 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 08:50:42,198 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:50:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 08:50:42,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-25 08:50:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:50:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-07-25 08:50:42,203 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 408 [2018-07-25 08:50:42,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:42,203 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-07-25 08:50:42,203 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:50:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-07-25 08:50:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 08:50:42,204 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:42,204 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1] [2018-07-25 08:50:42,205 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:42,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1694104379, now seen corresponding path program 203 times [2018-07-25 08:50:42,205 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:43,994 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 08:50:43,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:43,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:50:43,994 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:50:43,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:50:44,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:50:44,001 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 206 states. [2018-07-25 08:50:45,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:45,210 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 08:50:45,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:50:45,211 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-25 08:50:45,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:45,211 INFO L225 Difference]: With dead ends: 415 [2018-07-25 08:50:45,211 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 08:50:45,214 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 08:50:45,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 08:50:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 08:50:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 08:50:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-07-25 08:50:45,219 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 410 [2018-07-25 08:50:45,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:45,219 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-07-25 08:50:45,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:50:45,219 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-07-25 08:50:45,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 08:50:45,221 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:45,221 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1] [2018-07-25 08:50:45,221 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:45,221 INFO L82 PathProgramCache]: Analyzing trace with hash -241650945, now seen corresponding path program 204 times [2018-07-25 08:50:45,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:46,939 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 08:50:46,940 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:46,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:50:46,940 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:50:46,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:50:46,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:50:46,945 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 207 states. [2018-07-25 08:50:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:49,250 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 08:50:49,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:50:49,250 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 412 [2018-07-25 08:50:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:49,251 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:50:49,251 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 08:50:49,253 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:50:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 08:50:49,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-07-25 08:50:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 08:50:49,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-07-25 08:50:49,259 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 412 [2018-07-25 08:50:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:49,259 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-07-25 08:50:49,259 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:50:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-07-25 08:50:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 08:50:49,260 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:49,260 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1] [2018-07-25 08:50:49,261 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:49,261 INFO L82 PathProgramCache]: Analyzing trace with hash -298272071, now seen corresponding path program 205 times [2018-07-25 08:50:49,261 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:50,971 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 08:50:50,971 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:50,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:50:50,972 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:50:50,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:50:50,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:50:50,977 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 208 states. [2018-07-25 08:50:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:53,024 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-25 08:50:53,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:50:53,024 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-25 08:50:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:53,024 INFO L225 Difference]: With dead ends: 419 [2018-07-25 08:50:53,025 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 08:50:53,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:50:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 08:50:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 08:50:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 08:50:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 417 transitions. [2018-07-25 08:50:53,029 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 417 transitions. Word has length 414 [2018-07-25 08:50:53,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:53,030 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 417 transitions. [2018-07-25 08:50:53,030 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:50:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 417 transitions. [2018-07-25 08:50:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 08:50:53,031 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:53,031 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1] [2018-07-25 08:50:53,031 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:53,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1123400691, now seen corresponding path program 206 times [2018-07-25 08:50:53,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:54,575 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 08:50:54,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:54,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:50:54,576 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:50:54,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:50:54,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:50:54,581 INFO L87 Difference]: Start difference. First operand 417 states and 417 transitions. Second operand 209 states. [2018-07-25 08:50:55,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:55,897 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-25 08:50:55,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:50:55,897 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 416 [2018-07-25 08:50:55,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:55,898 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:50:55,898 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 08:50:55,901 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:50:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 08:50:55,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-25 08:50:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 08:50:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-07-25 08:50:55,905 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 416 [2018-07-25 08:50:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:55,906 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-07-25 08:50:55,906 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:50:55,906 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-07-25 08:50:55,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 08:50:55,907 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:55,907 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1] [2018-07-25 08:50:55,907 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:55,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1551324845, now seen corresponding path program 207 times [2018-07-25 08:50:55,907 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:57,511 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 08:50:57,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:57,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:50:57,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:50:57,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:50:57,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:50:57,516 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 210 states. [2018-07-25 08:50:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:59,709 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-25 08:50:59,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:50:59,709 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-25 08:50:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:59,710 INFO L225 Difference]: With dead ends: 423 [2018-07-25 08:50:59,710 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 08:50:59,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:50:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 08:50:59,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 08:50:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 08:50:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2018-07-25 08:50:59,716 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 418 [2018-07-25 08:50:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:59,716 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2018-07-25 08:50:59,716 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:50:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2018-07-25 08:50:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 08:50:59,718 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:59,718 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1] [2018-07-25 08:50:59,718 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:59,718 INFO L82 PathProgramCache]: Analyzing trace with hash 469576423, now seen corresponding path program 208 times [2018-07-25 08:50:59,718 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:01,375 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 08:51:01,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:01,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:51:01,376 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:51:01,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:51:01,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:51:01,378 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand 211 states. [2018-07-25 08:51:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:02,520 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-25 08:51:02,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:51:02,520 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 420 [2018-07-25 08:51:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:02,521 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:51:02,521 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 08:51:02,522 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:51:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 08:51:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-07-25 08:51:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 08:51:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-07-25 08:51:02,525 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 420 [2018-07-25 08:51:02,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:02,526 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-07-25 08:51:02,526 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:51:02,526 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-07-25 08:51:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 08:51:02,527 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:02,527 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1] [2018-07-25 08:51:02,527 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:02,527 INFO L82 PathProgramCache]: Analyzing trace with hash 291428513, now seen corresponding path program 209 times [2018-07-25 08:51:02,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:04,109 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 08:51:04,110 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:04,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:51:04,110 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:51:04,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:51:04,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:51:04,115 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 212 states. [2018-07-25 08:51:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:05,796 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-25 08:51:05,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:51:05,797 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-25 08:51:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:05,797 INFO L225 Difference]: With dead ends: 427 [2018-07-25 08:51:05,797 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 08:51:05,799 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:51:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 08:51:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 08:51:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 08:51:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 425 transitions. [2018-07-25 08:51:05,803 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 425 transitions. Word has length 422 [2018-07-25 08:51:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:05,804 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 425 transitions. [2018-07-25 08:51:05,804 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:51:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 425 transitions. [2018-07-25 08:51:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 08:51:05,805 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:05,805 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1] [2018-07-25 08:51:05,805 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:05,805 INFO L82 PathProgramCache]: Analyzing trace with hash 889978843, now seen corresponding path program 210 times [2018-07-25 08:51:05,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:07,314 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 08:51:07,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:07,314 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:51:07,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:51:07,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:51:07,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:51:07,322 INFO L87 Difference]: Start difference. First operand 425 states and 425 transitions. Second operand 213 states. [2018-07-25 08:51:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:10,035 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-25 08:51:10,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:51:10,035 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 424 [2018-07-25 08:51:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:10,036 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:51:10,036 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 08:51:10,039 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 08:51:10,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 08:51:10,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-25 08:51:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 08:51:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-07-25 08:51:10,044 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 424 [2018-07-25 08:51:10,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:10,044 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-07-25 08:51:10,044 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:51:10,044 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-07-25 08:51:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 08:51:10,045 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:10,046 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1] [2018-07-25 08:51:10,046 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:10,046 INFO L82 PathProgramCache]: Analyzing trace with hash 571228309, now seen corresponding path program 211 times [2018-07-25 08:51:10,046 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:11,889 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 08:51:11,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:11,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:51:11,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:51:11,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:51:11,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:51:11,895 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 214 states. [2018-07-25 08:51:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:13,546 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-25 08:51:13,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:51:13,546 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-07-25 08:51:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:13,547 INFO L225 Difference]: With dead ends: 431 [2018-07-25 08:51:13,547 INFO L226 Difference]: Without dead ends: 429 [2018-07-25 08:51:13,549 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:51:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-25 08:51:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-25 08:51:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 08:51:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 429 transitions. [2018-07-25 08:51:13,553 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 429 transitions. Word has length 426 [2018-07-25 08:51:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:13,553 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 429 transitions. [2018-07-25 08:51:13,553 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:51:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 429 transitions. [2018-07-25 08:51:13,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 08:51:13,554 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:13,555 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1, 1] [2018-07-25 08:51:13,555 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:13,555 INFO L82 PathProgramCache]: Analyzing trace with hash -805356849, now seen corresponding path program 212 times [2018-07-25 08:51:13,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:15,298 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 08:51:15,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:15,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:51:15,298 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:51:15,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:51:15,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:51:15,301 INFO L87 Difference]: Start difference. First operand 429 states and 429 transitions. Second operand 215 states. [2018-07-25 08:51:16,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:16,536 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-07-25 08:51:16,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:51:16,536 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 428 [2018-07-25 08:51:16,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:16,537 INFO L225 Difference]: With dead ends: 433 [2018-07-25 08:51:16,537 INFO L226 Difference]: Without dead ends: 431 [2018-07-25 08:51:16,538 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:51:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-25 08:51:16,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-07-25 08:51:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-25 08:51:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-07-25 08:51:16,542 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 428 [2018-07-25 08:51:16,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:16,542 INFO L472 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-07-25 08:51:16,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:51:16,542 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-07-25 08:51:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-25 08:51:16,543 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:16,543 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1, 1] [2018-07-25 08:51:16,544 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:16,544 INFO L82 PathProgramCache]: Analyzing trace with hash -853766519, now seen corresponding path program 213 times [2018-07-25 08:51:16,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:18,220 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:18,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:51:18,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:51:18,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:51:18,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:51:18,225 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 216 states. [2018-07-25 08:51:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:20,771 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2018-07-25 08:51:20,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:51:20,771 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 430 [2018-07-25 08:51:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:20,772 INFO L225 Difference]: With dead ends: 435 [2018-07-25 08:51:20,772 INFO L226 Difference]: Without dead ends: 433 [2018-07-25 08:51:20,774 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:51:20,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-25 08:51:20,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-25 08:51:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-25 08:51:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 433 transitions. [2018-07-25 08:51:20,778 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 433 transitions. Word has length 430 [2018-07-25 08:51:20,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:20,779 INFO L472 AbstractCegarLoop]: Abstraction has 433 states and 433 transitions. [2018-07-25 08:51:20,779 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:51:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 433 transitions. [2018-07-25 08:51:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-25 08:51:20,780 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:20,780 INFO L354 BasicCegarLoop]: trace histogram [215, 214, 1, 1, 1] [2018-07-25 08:51:20,780 INFO L415 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:20,780 INFO L82 PathProgramCache]: Analyzing trace with hash -130819133, now seen corresponding path program 214 times [2018-07-25 08:51:20,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 0 proven. 46010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:22,479 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:22,479 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:51:22,480 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:51:22,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:51:22,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:51:22,485 INFO L87 Difference]: Start difference. First operand 433 states and 433 transitions. Second operand 217 states. [2018-07-25 08:51:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:23,853 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-07-25 08:51:23,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:51:23,854 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 432 [2018-07-25 08:51:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:23,854 INFO L225 Difference]: With dead ends: 437 [2018-07-25 08:51:23,854 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 08:51:23,856 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:51:23,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 08:51:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-07-25 08:51:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-25 08:51:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-07-25 08:51:23,861 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 432 [2018-07-25 08:51:23,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:23,861 INFO L472 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-07-25 08:51:23,861 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:51:23,861 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-07-25 08:51:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-25 08:51:23,862 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:23,862 INFO L354 BasicCegarLoop]: trace histogram [216, 215, 1, 1, 1] [2018-07-25 08:51:23,862 INFO L415 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:23,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1163083139, now seen corresponding path program 215 times [2018-07-25 08:51:23,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 46440 backedges. 0 proven. 46440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:25,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:25,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:51:25,674 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:51:25,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:51:25,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:51:25,677 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 218 states. [2018-07-25 08:51:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:28,418 INFO L93 Difference]: Finished difference Result 439 states and 439 transitions. [2018-07-25 08:51:28,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:51:28,418 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 434 [2018-07-25 08:51:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:28,419 INFO L225 Difference]: With dead ends: 439 [2018-07-25 08:51:28,419 INFO L226 Difference]: Without dead ends: 437 [2018-07-25 08:51:28,420 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:51:28,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-07-25 08:51:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-07-25 08:51:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 08:51:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2018-07-25 08:51:28,425 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 434 [2018-07-25 08:51:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:28,425 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2018-07-25 08:51:28,425 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:51:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2018-07-25 08:51:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-25 08:51:28,427 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:28,427 INFO L354 BasicCegarLoop]: trace histogram [217, 216, 1, 1, 1] [2018-07-25 08:51:28,427 INFO L415 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:28,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1031347529, now seen corresponding path program 216 times [2018-07-25 08:51:28,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:30,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:30,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 08:51:30,254 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 08:51:30,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 08:51:30,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:51:30,257 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 219 states. [2018-07-25 08:51:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:32,574 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-07-25 08:51:32,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:51:32,574 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 436 [2018-07-25 08:51:32,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:32,575 INFO L225 Difference]: With dead ends: 441 [2018-07-25 08:51:32,575 INFO L226 Difference]: Without dead ends: 439 [2018-07-25 08:51:32,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:51:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-25 08:51:32,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-07-25 08:51:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-07-25 08:51:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-07-25 08:51:32,580 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 436 [2018-07-25 08:51:32,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:32,580 INFO L472 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-07-25 08:51:32,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 08:51:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-07-25 08:51:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-25 08:51:32,582 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:32,582 INFO L354 BasicCegarLoop]: trace histogram [218, 217, 1, 1, 1] [2018-07-25 08:51:32,582 INFO L415 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:32,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1012522097, now seen corresponding path program 217 times [2018-07-25 08:51:32,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 47306 backedges. 0 proven. 47306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:34,352 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:34,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:51:34,352 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:51:34,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:51:34,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:51:34,358 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 220 states. [2018-07-25 08:51:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:35,378 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2018-07-25 08:51:35,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:51:35,378 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 438 [2018-07-25 08:51:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:35,379 INFO L225 Difference]: With dead ends: 443 [2018-07-25 08:51:35,379 INFO L226 Difference]: Without dead ends: 441 [2018-07-25 08:51:35,381 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:51:35,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-07-25 08:51:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-07-25 08:51:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-07-25 08:51:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 441 transitions. [2018-07-25 08:51:35,385 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 441 transitions. Word has length 438 [2018-07-25 08:51:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:35,386 INFO L472 AbstractCegarLoop]: Abstraction has 441 states and 441 transitions. [2018-07-25 08:51:35,386 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:51:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 441 transitions. [2018-07-25 08:51:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-25 08:51:35,387 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:35,387 INFO L354 BasicCegarLoop]: trace histogram [219, 218, 1, 1, 1] [2018-07-25 08:51:35,387 INFO L415 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:35,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1923788885, now seen corresponding path program 218 times [2018-07-25 08:51:35,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 47742 backedges. 0 proven. 47742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:37,079 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:37,080 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 08:51:37,080 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 08:51:37,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 08:51:37,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:51:37,086 INFO L87 Difference]: Start difference. First operand 441 states and 441 transitions. Second operand 221 states. Received shutdown request... [2018-07-25 08:51:37,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:51:37,999 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:51:38,009 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:51:38,009 INFO L202 PluginConnector]: Adding new model nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:51:38 BoogieIcfgContainer [2018-07-25 08:51:38,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:51:38,010 INFO L168 Benchmark]: Toolchain (without parser) took 255074.89 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 91.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-25 08:51:38,012 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:51:38,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.34 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:51:38,013 INFO L168 Benchmark]: Boogie Preprocessor took 23.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:51:38,013 INFO L168 Benchmark]: RCFGBuilder took 255.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:51:38,013 INFO L168 Benchmark]: TraceAbstraction took 254748.39 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 80.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-25 08:51:38,015 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.34 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 255.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254748.39 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 80.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 63). Cancelled while BasicCegarLoop was constructing difference of abstraction (441states) and interpolant automaton (currently 184 states, 221 states before enhancement), while ReachableStatesComputation was computing reachable states (363 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 254.6s OverallTime, 219 OverallIterations, 219 TraceHistogramMax, 112.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 875 SDtfs, 0 SDslu, 35172 SDs, 0 SdLazy, 35391 SolverSat, 455 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24309 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 24090 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 88.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=441occurred in iteration=218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 218 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 29.8s SatisfiabilityAnalysisTime, 100.1s InterpolantComputationTime, 48618 NumberOfCodeBlocks, 48618 NumberOfCodeBlocksAsserted, 219 NumberOfCheckSat, 48399 ConstructedInterpolants, 0 QuantifiedInterpolants, 42494979 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 219 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3501080 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/nested.c_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-51-38-025.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested.c_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-51-38-025.csv Completed graceful shutdown