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/invert_string.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:46:22,928 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:46:22,930 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:46:22,951 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-07-25 08:46:22,993 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:46:23,007 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:46:23,007 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:46:23,009 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:46:23,009 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:46:23,009 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:46:23,009 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:46:23,009 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:46:23,009 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:46:23,052 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:46:23,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:46:23,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:46:23,081 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:46:23,082 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:46:23,082 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl [2018-07-25 08:46:23,083 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl' [2018-07-25 08:46:23,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:46:23,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:46:23,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:46:23,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:46:23,150 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:46:23,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/1) ... [2018-07-25 08:46:23,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/1) ... [2018-07-25 08:46:23,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:46:23,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:46:23,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:46:23,195 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:46:23,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/1) ... [2018-07-25 08:46:23,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/1) ... [2018-07-25 08:46:23,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/1) ... [2018-07-25 08:46:23,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/1) ... [2018-07-25 08:46:23,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/1) ... [2018-07-25 08:46:23,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/1) ... [2018-07-25 08:46:23,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/1) ... [2018-07-25 08:46:23,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:46:23,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:46:23,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:46:23,223 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:46:23,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/1) ... [2018-07-25 08:46:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:46:23,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:46:23,515 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:46:23,516 INFO L202 PluginConnector]: Adding new model invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:46:23 BoogieIcfgContainer [2018-07-25 08:46:23,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:46:23,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:46:23,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:46:23,521 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:46:23,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:23" (1/2) ... [2018-07-25 08:46:23,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22063e9c and model type invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:46:23, skipping insertion in model container [2018-07-25 08:46:23,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:46:23" (2/2) ... [2018-07-25 08:46:23,525 INFO L112 eAbstractionObserver]: Analyzing ICFG invert_string.i_4.bpl [2018-07-25 08:46:23,535 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:46:23,542 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:46:23,583 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:46:23,584 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:46:23,584 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:46:23,584 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:46:23,584 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:46:23,585 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:46:23,585 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:46:23,585 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:46:23,585 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:46:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 08:46:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:46:23,607 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:23,608 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 08:46:23,609 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:23,615 INFO L82 PathProgramCache]: Analyzing trace with hash 889539531, now seen corresponding path program 1 times [2018-07-25 08:46:23,622 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:23,715 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 08:46:23,718 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:46:23,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:46:23,723 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:46:23,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:46:23,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:46:23,739 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-07-25 08:46:23,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:23,804 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2018-07-25 08:46:23,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:46:23,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:46:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:23,818 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:46:23,818 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:46:23,822 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:46:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:46:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:46:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:46:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 08:46:23,871 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 08:46:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:23,871 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 08:46:23,871 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:46:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 08:46:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:46:23,872 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:23,873 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:46:23,873 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:23,873 INFO L82 PathProgramCache]: Analyzing trace with hash 198621957, now seen corresponding path program 1 times [2018-07-25 08:46:23,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:23,920 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 08:46:23,921 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:23,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:46:23,923 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:46:23,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:46:23,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:46:23,924 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2018-07-25 08:46:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:23,991 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-07-25 08:46:23,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:46:23,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:46:23,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:23,993 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:46:23,993 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:46:23,994 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:46:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:46:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:46:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:46:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 08:46:23,999 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 08:46:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:23,999 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 08:46:24,000 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:46:24,000 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 08:46:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:46:24,000 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:24,001 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:46:24,001 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:24,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1897191999, now seen corresponding path program 1 times [2018-07-25 08:46:24,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:24,086 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:24,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:46:24,086 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:46:24,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:46:24,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:46:24,087 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-25 08:46:24,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:24,267 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-07-25 08:46:24,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:46:24,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:46:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:24,268 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:46:24,268 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:46:24,269 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:46:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:46:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:46:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:46:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 08:46:24,279 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-25 08:46:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:24,279 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 08:46:24,280 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:46:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 08:46:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:46:24,284 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:24,284 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-07-25 08:46:24,284 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:24,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1765270407, now seen corresponding path program 2 times [2018-07-25 08:46:24,285 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:24,350 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:24,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:46:24,351 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:46:24,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:46:24,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:46:24,352 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2018-07-25 08:46:24,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:24,406 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-07-25 08:46:24,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:46:24,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-07-25 08:46:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:24,408 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:46:24,408 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:46:24,411 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:46:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:46:24,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:46:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:46:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 08:46:24,432 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-25 08:46:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:24,433 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 08:46:24,433 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:46:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 08:46:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:46:24,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:24,437 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-07-25 08:46:24,438 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:24,438 INFO L82 PathProgramCache]: Analyzing trace with hash 87273139, now seen corresponding path program 3 times [2018-07-25 08:46:24,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:24,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:24,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:24,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:46:24,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:46:24,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:46:24,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:46:24,517 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-07-25 08:46:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:24,644 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-07-25 08:46:24,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:46:24,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:46:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:24,646 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:46:24,646 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:46:24,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:46:24,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:46:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:46:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:46:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-25 08:46:24,655 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-07-25 08:46:24,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:24,656 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-25 08:46:24,656 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:46:24,656 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-25 08:46:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:46:24,657 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:24,657 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2018-07-25 08:46:24,657 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:24,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1096334355, now seen corresponding path program 4 times [2018-07-25 08:46:24,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:24,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:24,705 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:46:24,706 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:46:24,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:46:24,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:46:24,707 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2018-07-25 08:46:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:24,771 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-07-25 08:46:24,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:46:24,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-07-25 08:46:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:24,776 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:46:24,776 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:46:24,777 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:46:24,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:46:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:46:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:46:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 08:46:24,799 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-07-25 08:46:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:24,799 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 08:46:24,799 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:46:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 08:46:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:46:24,803 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:24,804 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-07-25 08:46:24,804 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:24,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1310275289, now seen corresponding path program 5 times [2018-07-25 08:46:24,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:24,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:24,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:46:24,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:46:24,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:46:24,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:46:24,927 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2018-07-25 08:46:25,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:25,079 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-07-25 08:46:25,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:46:25,080 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:46:25,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:25,081 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:46:25,081 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:46:25,082 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:46:25,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:46:25,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:46:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:46:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 08:46:25,094 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-25 08:46:25,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:25,096 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 08:46:25,096 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:46:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 08:46:25,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:46:25,098 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:25,098 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1] [2018-07-25 08:46:25,098 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:25,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1330040479, now seen corresponding path program 6 times [2018-07-25 08:46:25,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:25,127 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:25,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:46:25,128 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:46:25,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:46:25,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:46:25,129 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 8 states. [2018-07-25 08:46:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:25,164 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-07-25 08:46:25,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:46:25,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-07-25 08:46:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:25,166 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:46:25,166 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:46:25,168 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:46:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:46:25,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:46:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:46:25,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-25 08:46:25,186 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-07-25 08:46:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:25,186 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-25 08:46:25,186 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:46:25,186 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-25 08:46:25,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:46:25,187 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:25,188 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-07-25 08:46:25,188 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:25,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1731406235, now seen corresponding path program 7 times [2018-07-25 08:46:25,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:25,290 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:25,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:46:25,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:46:25,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:46:25,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:46:25,292 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-07-25 08:46:25,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:25,437 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-07-25 08:46:25,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:46:25,438 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:46:25,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:25,439 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:46:25,439 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:46:25,440 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:46:25,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:46:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:46:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:46:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 08:46:25,450 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2018-07-25 08:46:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:25,451 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 08:46:25,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:46:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 08:46:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:46:25,452 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:25,452 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1] [2018-07-25 08:46:25,452 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:25,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1774380245, now seen corresponding path program 8 times [2018-07-25 08:46:25,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:25,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:25,483 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:46:25,483 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:46:25,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:46:25,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:46:25,484 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2018-07-25 08:46:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:25,532 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-07-25 08:46:25,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:46:25,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-07-25 08:46:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:25,535 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:46:25,535 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:46:25,536 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:46:25,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:46:25,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:46:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:46:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 08:46:25,552 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-25 08:46:25,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:25,552 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 08:46:25,552 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:46:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 08:46:25,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:46:25,553 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:25,554 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-07-25 08:46:25,554 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:25,554 INFO L82 PathProgramCache]: Analyzing trace with hash 77451279, now seen corresponding path program 9 times [2018-07-25 08:46:25,556 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:25,660 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:25,660 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:46:25,661 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:46:25,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:46:25,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:46:25,662 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2018-07-25 08:46:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:25,896 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-07-25 08:46:25,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:46:25,896 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:46:25,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:25,897 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:46:25,899 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:46:25,900 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:46:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:46:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:46:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:46:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-25 08:46:25,917 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-07-25 08:46:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:25,917 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-25 08:46:25,918 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:46:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-25 08:46:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:46:25,919 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:25,919 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1] [2018-07-25 08:46:25,920 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:25,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1980325449, now seen corresponding path program 10 times [2018-07-25 08:46:25,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:25,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:25,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:46:25,965 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:46:25,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:46:25,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:46:25,966 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 10 states. [2018-07-25 08:46:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:26,023 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-07-25 08:46:26,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:46:26,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2018-07-25 08:46:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:26,025 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:46:26,025 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:46:26,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:46:26,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:46:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:46:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:46:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 08:46:26,045 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2018-07-25 08:46:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:26,045 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 08:46:26,046 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:46:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 08:46:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:46:26,047 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:26,047 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-07-25 08:46:26,048 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:26,049 INFO L82 PathProgramCache]: Analyzing trace with hash 422296707, now seen corresponding path program 11 times [2018-07-25 08:46:26,049 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:26,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:26,158 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:46:26,158 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:46:26,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:46:26,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:46:26,159 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 16 states. [2018-07-25 08:46:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:26,399 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2018-07-25 08:46:26,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:46:26,400 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:46:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:26,401 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:46:26,401 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:46:26,402 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:46:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:46:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:46:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:46:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 08:46:26,419 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-07-25 08:46:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:26,419 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 08:46:26,419 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:46:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 08:46:26,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:46:26,421 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:26,421 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1] [2018-07-25 08:46:26,421 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:26,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1320051267, now seen corresponding path program 12 times [2018-07-25 08:46:26,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:26,463 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:26,463 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:46:26,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:46:26,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:46:26,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:46:26,465 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2018-07-25 08:46:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:26,522 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-07-25 08:46:26,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:46:26,523 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2018-07-25 08:46:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:26,524 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:46:26,524 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:46:26,525 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:46:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:46:26,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:46:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:46:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-25 08:46:26,546 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-07-25 08:46:26,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:26,546 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-25 08:46:26,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:46:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-25 08:46:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:46:26,547 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:26,547 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-07-25 08:46:26,548 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:26,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1553862921, now seen corresponding path program 13 times [2018-07-25 08:46:26,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:26,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:26,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:46:26,675 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:46:26,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:46:26,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:46:26,676 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 18 states. [2018-07-25 08:46:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:26,943 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2018-07-25 08:46:26,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:46:26,944 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:46:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:26,945 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:46:26,945 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:46:26,946 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:46:26,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:46:26,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:46:26,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:46:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 08:46:26,965 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-07-25 08:46:26,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:26,966 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 08:46:26,966 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:46:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 08:46:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:46:26,967 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:26,967 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1] [2018-07-25 08:46:26,967 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:26,968 INFO L82 PathProgramCache]: Analyzing trace with hash 115385137, now seen corresponding path program 14 times [2018-07-25 08:46:26,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:27,013 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:27,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:46:27,014 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:46:27,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:46:27,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:46:27,014 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 12 states. [2018-07-25 08:46:27,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:27,081 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-07-25 08:46:27,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:46:27,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2018-07-25 08:46:27,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:27,082 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:46:27,082 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:46:27,083 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:46:27,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:46:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:46:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:46:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 08:46:27,111 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-07-25 08:46:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:27,112 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 08:46:27,112 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:46:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 08:46:27,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:46:27,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:27,114 INFO L354 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-07-25 08:46:27,115 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:27,115 INFO L82 PathProgramCache]: Analyzing trace with hash -783980693, now seen corresponding path program 15 times [2018-07-25 08:46:27,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:27,259 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:27,259 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:46:27,260 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:46:27,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:46:27,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:46:27,261 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 20 states. [2018-07-25 08:46:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:27,568 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2018-07-25 08:46:27,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:46:27,568 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:46:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:27,569 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:46:27,569 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:46:27,572 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:46:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:46:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:46:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:46:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-25 08:46:27,602 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2018-07-25 08:46:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:27,603 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-25 08:46:27,603 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:46:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-25 08:46:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:46:27,604 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:27,604 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1] [2018-07-25 08:46:27,608 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:27,608 INFO L82 PathProgramCache]: Analyzing trace with hash 830172837, now seen corresponding path program 16 times [2018-07-25 08:46:27,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 72 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:27,663 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:27,663 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:46:27,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:46:27,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:46:27,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:46:27,665 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 13 states. [2018-07-25 08:46:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:27,732 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-07-25 08:46:27,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:46:27,732 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-07-25 08:46:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:27,733 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:46:27,733 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:46:27,734 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:46:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:46:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:46:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:46:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 08:46:27,758 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-07-25 08:46:27,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:27,758 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 08:46:27,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:46:27,759 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 08:46:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:46:27,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:27,760 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-07-25 08:46:27,760 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:27,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1067768353, now seen corresponding path program 17 times [2018-07-25 08:46:27,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:27,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:27,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:46:27,952 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:46:27,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:46:27,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:46:27,953 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 22 states. [2018-07-25 08:46:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:28,265 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-07-25 08:46:28,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:46:28,266 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:46:28,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:28,266 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:46:28,266 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:46:28,268 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:46:28,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:46:28,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:46:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:46:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 08:46:28,293 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-25 08:46:28,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:28,294 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 08:46:28,294 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:46:28,294 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 08:46:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:46:28,294 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:28,295 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1] [2018-07-25 08:46:28,295 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:28,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2070347801, now seen corresponding path program 18 times [2018-07-25 08:46:28,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 90 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:28,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:28,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:46:28,346 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:46:28,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:46:28,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:46:28,346 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 14 states. [2018-07-25 08:46:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:28,417 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-07-25 08:46:28,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:46:28,417 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2018-07-25 08:46:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:28,418 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:46:28,418 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:46:28,419 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=221, Invalid=331, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:46:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:46:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:46:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:46:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-25 08:46:28,446 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2018-07-25 08:46:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:28,447 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-25 08:46:28,447 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:46:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-25 08:46:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:46:28,448 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:28,448 INFO L354 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-07-25 08:46:28,448 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:28,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1034431059, now seen corresponding path program 19 times [2018-07-25 08:46:28,448 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:28,589 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:28,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:46:28,589 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:46:28,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:46:28,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:46:28,590 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-07-25 08:46:28,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:28,953 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2018-07-25 08:46:28,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:46:28,954 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:46:28,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:28,955 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:46:28,955 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:46:28,956 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=1212, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:46:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:46:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:46:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:46:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 08:46:28,987 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2018-07-25 08:46:28,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:28,987 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 08:46:28,987 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:46:28,987 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 08:46:28,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:46:28,988 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:28,989 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1] [2018-07-25 08:46:28,989 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:28,990 INFO L82 PathProgramCache]: Analyzing trace with hash 2120767373, now seen corresponding path program 20 times [2018-07-25 08:46:28,990 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 110 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:29,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:29,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:46:29,043 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:46:29,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:46:29,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:46:29,044 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 15 states. [2018-07-25 08:46:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:29,135 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-07-25 08:46:29,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:46:29,135 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2018-07-25 08:46:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:29,136 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:46:29,136 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:46:29,137 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:46:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:46:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:46:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:46:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 08:46:29,175 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-25 08:46:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:29,175 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 08:46:29,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:46:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 08:46:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:46:29,176 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:29,176 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-07-25 08:46:29,177 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:29,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2051967801, now seen corresponding path program 21 times [2018-07-25 08:46:29,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:29,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:29,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:46:29,345 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:46:29,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:46:29,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:46:29,346 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 26 states. [2018-07-25 08:46:29,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:29,764 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2018-07-25 08:46:29,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:46:29,764 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:46:29,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:29,765 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:46:29,765 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:46:29,766 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=1430, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:46:29,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:46:29,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:46:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:46:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-25 08:46:29,799 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-07-25 08:46:29,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:29,799 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-25 08:46:29,799 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:46:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-25 08:46:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:46:29,800 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:29,800 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1] [2018-07-25 08:46:29,800 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:29,800 INFO L82 PathProgramCache]: Analyzing trace with hash -473664255, now seen corresponding path program 22 times [2018-07-25 08:46:29,800 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 132 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:29,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:29,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:46:29,858 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:46:29,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:46:29,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:46:29,858 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 16 states. [2018-07-25 08:46:29,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:29,955 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-07-25 08:46:29,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:46:29,955 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2018-07-25 08:46:29,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:29,956 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:46:29,956 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:46:29,957 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=456, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:46:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:46:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:46:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:46:30,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 08:46:30,000 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2018-07-25 08:46:30,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:30,001 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 08:46:30,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:46:30,001 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 08:46:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:46:30,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:30,002 INFO L354 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-07-25 08:46:30,002 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:30,002 INFO L82 PathProgramCache]: Analyzing trace with hash 75236667, now seen corresponding path program 23 times [2018-07-25 08:46:30,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:30,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:30,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:46:30,185 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:46:30,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:46:30,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:46:30,186 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 28 states. [2018-07-25 08:46:30,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:30,695 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2018-07-25 08:46:30,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:46:30,696 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:46:30,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:30,696 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:46:30,696 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:46:30,698 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=1666, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:46:30,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:46:30,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:46:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:46:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 08:46:30,739 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-07-25 08:46:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:30,740 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 08:46:30,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:46:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 08:46:30,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:46:30,741 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:30,741 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1] [2018-07-25 08:46:30,741 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:30,743 INFO L82 PathProgramCache]: Analyzing trace with hash 608196725, now seen corresponding path program 24 times [2018-07-25 08:46:30,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 156 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:30,818 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:30,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:46:30,819 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:46:30,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:46:30,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:46:30,820 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 17 states. [2018-07-25 08:46:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:30,920 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-07-25 08:46:30,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:46:30,921 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2018-07-25 08:46:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:30,921 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:46:30,922 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:46:30,922 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=344, Invalid=526, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:46:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:46:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:46:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:46:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-25 08:46:30,964 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-07-25 08:46:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:30,965 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-25 08:46:30,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:46:30,965 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-25 08:46:30,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:46:30,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:30,966 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-07-25 08:46:30,966 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:30,967 INFO L82 PathProgramCache]: Analyzing trace with hash 361552815, now seen corresponding path program 25 times [2018-07-25 08:46:30,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:31,222 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:31,222 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:46:31,223 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:46:31,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:46:31,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:46:31,224 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 30 states. [2018-07-25 08:46:31,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:31,706 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2018-07-25 08:46:31,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:46:31,707 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:46:31,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:31,707 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:46:31,707 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:46:31,709 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=1920, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:46:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:46:31,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:46:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:46:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 08:46:31,748 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-07-25 08:46:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:31,748 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 08:46:31,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:46:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 08:46:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:46:31,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:31,749 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 1, 1, 1, 1] [2018-07-25 08:46:31,749 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:31,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1210122729, now seen corresponding path program 26 times [2018-07-25 08:46:31,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 182 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:31,812 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:31,812 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:46:31,812 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:46:31,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:46:31,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:46:31,813 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 18 states. [2018-07-25 08:46:31,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:31,914 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-07-25 08:46:31,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:46:31,914 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2018-07-25 08:46:31,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:31,915 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:46:31,915 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:46:31,916 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=391, Invalid=601, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:46:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:46:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:46:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:46:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 08:46:31,960 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-07-25 08:46:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:31,961 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 08:46:31,961 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:46:31,961 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 08:46:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:46:31,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:31,962 INFO L354 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-07-25 08:46:31,962 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:31,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1008142301, now seen corresponding path program 27 times [2018-07-25 08:46:31,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:32,174 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 08:46:32,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:32,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:46:32,175 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:46:32,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:46:32,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:46:32,176 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 32 states. [2018-07-25 08:46:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:32,719 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2018-07-25 08:46:32,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:46:32,720 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:46:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:32,721 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:46:32,721 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:46:32,722 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=2192, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:46:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:46:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:46:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:46:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-25 08:46:32,770 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2018-07-25 08:46:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:32,771 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-25 08:46:32,771 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:46:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-25 08:46:32,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:46:32,771 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:32,772 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 1, 1, 1, 1] [2018-07-25 08:46:32,772 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:32,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1490325155, now seen corresponding path program 28 times [2018-07-25 08:46:32,772 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 210 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:32,841 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:32,841 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:46:32,841 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:46:32,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:46:32,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:46:32,842 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 19 states. [2018-07-25 08:46:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:32,952 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-07-25 08:46:32,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:46:32,952 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2018-07-25 08:46:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:32,953 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:46:32,953 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:46:32,954 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=441, Invalid=681, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:46:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:46:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:46:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:46:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 08:46:33,000 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-07-25 08:46:33,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:33,001 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 08:46:33,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:46:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 08:46:33,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:46:33,002 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:33,002 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-07-25 08:46:33,002 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:33,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1978312041, now seen corresponding path program 29 times [2018-07-25 08:46:33,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:33,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:33,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:46:33,211 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:46:33,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:46:33,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:46:33,212 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 34 states. [2018-07-25 08:46:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:33,806 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2018-07-25 08:46:33,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:46:33,806 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:46:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:33,807 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:46:33,807 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:46:33,809 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=2482, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:46:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:46:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:46:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:46:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 08:46:33,860 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-25 08:46:33,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:33,861 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 08:46:33,861 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:46:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 08:46:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:46:33,861 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:33,862 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 1, 1, 1, 1] [2018-07-25 08:46:33,862 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:33,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1465604399, now seen corresponding path program 30 times [2018-07-25 08:46:33,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 240 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:33,945 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:33,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:46:33,945 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:46:33,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:46:33,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=206, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:46:33,946 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 20 states. [2018-07-25 08:46:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:34,081 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-07-25 08:46:34,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:46:34,082 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2018-07-25 08:46:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:34,083 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:46:34,083 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:46:34,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=494, Invalid=766, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:46:34,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:46:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:46:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:46:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-25 08:46:34,144 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2018-07-25 08:46:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:34,144 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-25 08:46:34,144 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:46:34,144 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-25 08:46:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:46:34,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:34,146 INFO L354 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-07-25 08:46:34,146 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:34,147 INFO L82 PathProgramCache]: Analyzing trace with hash 303497995, now seen corresponding path program 31 times [2018-07-25 08:46:34,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:34,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:34,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:46:34,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:46:34,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:46:34,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:46:34,438 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 36 states. [2018-07-25 08:46:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:35,152 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2018-07-25 08:46:35,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:46:35,153 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:46:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:35,153 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:46:35,154 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:46:35,156 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=2790, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:46:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:46:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:46:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:46:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 08:46:35,207 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2018-07-25 08:46:35,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:35,208 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 08:46:35,208 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:46:35,208 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 08:46:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:46:35,209 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:35,209 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 1, 1, 1, 1] [2018-07-25 08:46:35,209 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:35,211 INFO L82 PathProgramCache]: Analyzing trace with hash -2091802043, now seen corresponding path program 32 times [2018-07-25 08:46:35,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 272 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:35,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:35,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:46:35,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:46:35,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:46:35,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=227, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:46:35,306 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 21 states. [2018-07-25 08:46:35,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:35,434 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2018-07-25 08:46:35,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:46:35,435 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2018-07-25 08:46:35,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:35,436 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:46:35,436 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:46:35,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=550, Invalid=856, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:46:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:46:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:46:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:46:35,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 08:46:35,496 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-25 08:46:35,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:35,497 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 08:46:35,497 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:46:35,497 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 08:46:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:46:35,500 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:35,500 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-07-25 08:46:35,500 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:35,500 INFO L82 PathProgramCache]: Analyzing trace with hash -177016449, now seen corresponding path program 33 times [2018-07-25 08:46:35,501 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:35,769 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:35,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:46:35,770 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:46:35,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:46:35,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:46:35,771 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 38 states. [2018-07-25 08:46:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:36,533 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2018-07-25 08:46:36,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:46:36,533 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:46:36,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:36,534 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:46:36,534 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:46:36,536 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=3116, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:46:36,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:46:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:46:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:46:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-25 08:46:36,592 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-07-25 08:46:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:36,593 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-25 08:46:36,593 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:46:36,593 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-25 08:46:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:46:36,593 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:36,594 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1] [2018-07-25 08:46:36,594 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:36,594 INFO L82 PathProgramCache]: Analyzing trace with hash -42507335, now seen corresponding path program 34 times [2018-07-25 08:46:36,594 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 306 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:36,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:36,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:46:36,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:46:36,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:46:36,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=249, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:46:36,665 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 22 states. [2018-07-25 08:46:36,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:36,789 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-07-25 08:46:36,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:46:36,790 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 76 [2018-07-25 08:46:36,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:36,790 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:46:36,790 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:46:36,792 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=609, Invalid=951, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:46:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:46:36,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:46:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:46:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 08:46:36,848 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2018-07-25 08:46:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:36,848 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 08:46:36,848 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:46:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 08:46:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:46:36,849 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:36,849 INFO L354 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-07-25 08:46:36,850 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:36,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2100176371, now seen corresponding path program 35 times [2018-07-25 08:46:36,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:37,090 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:37,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:46:37,090 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:46:37,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:46:37,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:46:37,092 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 40 states. [2018-07-25 08:46:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:37,761 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2018-07-25 08:46:37,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:46:37,762 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:46:37,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:37,762 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:46:37,762 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:46:37,765 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=3460, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:46:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:46:37,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:46:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:46:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 08:46:37,818 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-07-25 08:46:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:37,818 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 08:46:37,819 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:46:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 08:46:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:46:37,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:37,820 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1] [2018-07-25 08:46:37,820 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:37,820 INFO L82 PathProgramCache]: Analyzing trace with hash 752544557, now seen corresponding path program 36 times [2018-07-25 08:46:37,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 342 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:37,894 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:37,894 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:46:37,895 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:46:37,895 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:46:37,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:46:37,896 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 23 states. [2018-07-25 08:46:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:38,043 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2018-07-25 08:46:38,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:46:38,044 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 80 [2018-07-25 08:46:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:38,045 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:46:38,045 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:46:38,047 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=671, Invalid=1051, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:46:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:46:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:46:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:46:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-25 08:46:38,118 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-07-25 08:46:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:38,118 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-25 08:46:38,118 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:46:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-25 08:46:38,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:46:38,119 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:38,119 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-07-25 08:46:38,120 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:38,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1640865895, now seen corresponding path program 37 times [2018-07-25 08:46:38,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:38,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:38,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:46:38,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:46:38,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:46:38,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:46:38,417 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 42 states. [2018-07-25 08:46:39,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:39,151 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2018-07-25 08:46:39,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:46:39,151 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:46:39,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:39,152 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:46:39,152 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:46:39,155 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=3822, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:46:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:46:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:46:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:46:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 08:46:39,212 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-07-25 08:46:39,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:39,212 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 08:46:39,212 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:46:39,212 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 08:46:39,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:46:39,213 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:39,213 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1] [2018-07-25 08:46:39,214 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:39,214 INFO L82 PathProgramCache]: Analyzing trace with hash 918632609, now seen corresponding path program 38 times [2018-07-25 08:46:39,214 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 380 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:39,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:39,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:46:39,285 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:46:39,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:46:39,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:46:39,286 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 24 states. [2018-07-25 08:46:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:39,412 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-07-25 08:46:39,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:46:39,412 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 84 [2018-07-25 08:46:39,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:39,413 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:46:39,413 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:46:39,414 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=736, Invalid=1156, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:46:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:46:39,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:46:39,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:46:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 08:46:39,475 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-07-25 08:46:39,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:39,475 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 08:46:39,475 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:46:39,475 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 08:46:39,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:46:39,476 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:39,476 INFO L354 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-07-25 08:46:39,476 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:39,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1957273381, now seen corresponding path program 39 times [2018-07-25 08:46:39,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:39,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:39,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:46:39,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:46:39,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:46:39,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:46:39,721 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 44 states. [2018-07-25 08:46:40,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:40,432 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2018-07-25 08:46:40,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:46:40,432 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:46:40,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:40,433 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:46:40,433 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:46:40,435 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=4202, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:46:40,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:46:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:46:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:46:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-25 08:46:40,501 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2018-07-25 08:46:40,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:40,501 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-25 08:46:40,501 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:46:40,501 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-25 08:46:40,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:46:40,502 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:40,502 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 1, 1, 1, 1] [2018-07-25 08:46:40,503 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:40,503 INFO L82 PathProgramCache]: Analyzing trace with hash 267340821, now seen corresponding path program 40 times [2018-07-25 08:46:40,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 420 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:40,576 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:40,577 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:46:40,577 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:46:40,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:46:40,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=321, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:46:40,578 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 25 states. [2018-07-25 08:46:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:40,714 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-07-25 08:46:40,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:46:40,714 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2018-07-25 08:46:40,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:40,715 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:46:40,715 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:46:40,716 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=804, Invalid=1266, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:46:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:46:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:46:40,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:46:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 08:46:40,784 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-07-25 08:46:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:40,784 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 08:46:40,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:46:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 08:46:40,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:46:40,785 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:40,786 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-07-25 08:46:40,786 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:40,786 INFO L82 PathProgramCache]: Analyzing trace with hash -783456433, now seen corresponding path program 41 times [2018-07-25 08:46:40,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:41,029 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:41,029 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:46:41,030 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:46:41,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:46:41,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:46:41,031 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 46 states. [2018-07-25 08:46:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:41,782 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2018-07-25 08:46:41,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:46:41,782 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:46:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:41,783 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:46:41,783 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:46:41,785 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=4600, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:46:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:46:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:46:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:46:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 08:46:41,856 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-25 08:46:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:41,857 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 08:46:41,857 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:46:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 08:46:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:46:41,858 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:41,858 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 1, 1, 1, 1] [2018-07-25 08:46:41,858 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:41,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1017783689, now seen corresponding path program 42 times [2018-07-25 08:46:41,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 462 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:41,931 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:41,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:46:41,932 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:46:41,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:46:41,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:46:41,933 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 26 states. [2018-07-25 08:46:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:42,069 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-07-25 08:46:42,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:46:42,069 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 92 [2018-07-25 08:46:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:42,073 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:46:42,073 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:46:42,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=875, Invalid=1381, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:46:42,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:46:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:46:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:46:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-25 08:46:42,148 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2018-07-25 08:46:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:42,148 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-25 08:46:42,149 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:46:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-25 08:46:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:46:42,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:42,150 INFO L354 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-07-25 08:46:42,150 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:42,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1162366013, now seen corresponding path program 43 times [2018-07-25 08:46:42,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:42,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:42,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:46:42,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:46:42,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:46:42,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:46:42,417 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 48 states. [2018-07-25 08:46:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:43,246 INFO L93 Difference]: Finished difference Result 145 states and 147 transitions. [2018-07-25 08:46:43,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:46:43,246 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:46:43,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:43,247 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:46:43,247 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:46:43,249 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=5016, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:46:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:46:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:46:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:46:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 08:46:43,328 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2018-07-25 08:46:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:43,328 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 08:46:43,329 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:46:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 08:46:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:46:43,331 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:43,331 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 1, 1, 1, 1] [2018-07-25 08:46:43,331 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:43,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1867070211, now seen corresponding path program 44 times [2018-07-25 08:46:43,332 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 506 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:43,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:43,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:46:43,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:46:43,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:46:43,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:46:43,414 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 27 states. [2018-07-25 08:46:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:43,561 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-07-25 08:46:43,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:46:43,561 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2018-07-25 08:46:43,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:43,562 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:46:43,562 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:46:43,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=949, Invalid=1501, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:46:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:46:43,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:46:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:46:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 08:46:43,638 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-25 08:46:43,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:43,639 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 08:46:43,639 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:46:43,639 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 08:46:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:46:43,640 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:43,640 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-07-25 08:46:43,640 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:43,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1041909303, now seen corresponding path program 45 times [2018-07-25 08:46:43,641 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 1104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:43,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:43,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:46:43,908 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:46:43,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:46:43,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:46:43,909 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 50 states. [2018-07-25 08:46:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:44,779 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2018-07-25 08:46:44,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:46:44,779 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:46:44,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:44,780 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:46:44,781 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:46:44,782 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=5450, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:46:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:46:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:46:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:46:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-25 08:46:44,880 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-07-25 08:46:44,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:44,881 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-25 08:46:44,881 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:46:44,881 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-25 08:46:44,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:46:44,882 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:44,882 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 1, 1, 1, 1] [2018-07-25 08:46:44,883 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:44,883 INFO L82 PathProgramCache]: Analyzing trace with hash -279303567, now seen corresponding path program 46 times [2018-07-25 08:46:44,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 552 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:44,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:44,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:46:44,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:46:44,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:46:44,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=402, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:46:44,990 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 28 states. [2018-07-25 08:46:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:45,186 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-07-25 08:46:45,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:46:45,186 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 100 [2018-07-25 08:46:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:45,187 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:46:45,187 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:46:45,188 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1026, Invalid=1626, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:46:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:46:45,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:46:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:46:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 08:46:45,324 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2018-07-25 08:46:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:45,325 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 08:46:45,325 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:46:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 08:46:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:46:45,326 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:45,326 INFO L354 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-07-25 08:46:45,326 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:45,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2122703189, now seen corresponding path program 47 times [2018-07-25 08:46:45,327 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:45,596 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:45,596 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:46:45,597 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:46:45,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:46:45,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:46:45,598 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 52 states. [2018-07-25 08:46:46,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:46,440 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2018-07-25 08:46:46,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:46:46,440 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:46:46,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:46,441 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:46:46,441 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:46:46,443 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=260, Invalid=5902, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:46:46,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:46:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:46:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:46:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 08:46:46,529 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-07-25 08:46:46,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:46,530 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 08:46:46,530 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:46:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 08:46:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:46:46,531 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:46,531 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 1, 1, 1, 1] [2018-07-25 08:46:46,531 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:46,532 INFO L82 PathProgramCache]: Analyzing trace with hash 190404069, now seen corresponding path program 48 times [2018-07-25 08:46:46,532 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 600 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:46,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:46,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:46:46,619 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:46:46,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:46:46,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=431, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:46:46,619 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 29 states. [2018-07-25 08:46:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:46,787 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-07-25 08:46:46,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:46:46,787 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2018-07-25 08:46:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:46,788 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:46:46,788 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:46:46,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1106, Invalid=1756, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:46:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:46:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:46:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:46:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-25 08:46:46,888 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-07-25 08:46:46,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:46,888 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-25 08:46:46,889 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:46:46,889 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-25 08:46:46,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:46:46,890 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:46,890 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-07-25 08:46:46,890 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:46,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1705231073, now seen corresponding path program 49 times [2018-07-25 08:46:46,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 1300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:47,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:47,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:46:47,173 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:46:47,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:46:47,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:46:47,174 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 54 states. [2018-07-25 08:46:48,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:48,111 INFO L93 Difference]: Finished difference Result 163 states and 165 transitions. [2018-07-25 08:46:48,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:46:48,111 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:46:48,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:48,112 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:46:48,112 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:46:48,113 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=6372, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:46:48,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:46:48,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:46:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:46:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 08:46:48,209 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-07-25 08:46:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:48,209 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 08:46:48,209 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:46:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 08:46:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:46:48,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:48,212 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 1, 1, 1, 1] [2018-07-25 08:46:48,212 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:48,212 INFO L82 PathProgramCache]: Analyzing trace with hash 653870937, now seen corresponding path program 50 times [2018-07-25 08:46:48,212 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 650 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:48,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:48,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:46:48,301 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:46:48,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:46:48,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=461, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:46:48,302 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 30 states. [2018-07-25 08:46:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:48,476 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2018-07-25 08:46:48,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:46:48,477 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 108 [2018-07-25 08:46:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:48,477 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:46:48,478 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:46:48,478 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1189, Invalid=1891, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:46:48,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:46:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:46:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:46:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 08:46:48,573 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-07-25 08:46:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:48,573 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 08:46:48,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:46:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 08:46:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:46:48,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:48,575 INFO L354 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-07-25 08:46:48,575 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:48,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1304797587, now seen corresponding path program 51 times [2018-07-25 08:46:48,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:48,884 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:48,884 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:46:48,884 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:46:48,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:46:48,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:46:48,885 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 56 states. [2018-07-25 08:46:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:49,804 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2018-07-25 08:46:49,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:46:49,805 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:46:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:49,806 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:46:49,806 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:46:49,807 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=6860, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:46:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:46:49,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:46:49,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:46:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-25 08:46:49,908 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2018-07-25 08:46:49,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:49,908 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-25 08:46:49,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:46:49,908 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-25 08:46:49,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:46:49,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:49,910 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 1, 1, 1, 1] [2018-07-25 08:46:49,910 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash -738263347, now seen corresponding path program 52 times [2018-07-25 08:46:49,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 702 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:49,996 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:49,996 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:46:49,997 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:46:49,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:46:49,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=492, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:46:49,997 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 31 states. [2018-07-25 08:46:50,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:50,177 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-07-25 08:46:50,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:46:50,178 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2018-07-25 08:46:50,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:50,179 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:46:50,179 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:46:50,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1275, Invalid=2031, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:46:50,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:46:50,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:46:50,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:46:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 08:46:50,296 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-07-25 08:46:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:50,296 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 08:46:50,296 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:46:50,296 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 08:46:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:46:50,297 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:50,298 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-07-25 08:46:50,298 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:50,298 INFO L82 PathProgramCache]: Analyzing trace with hash -801420281, now seen corresponding path program 53 times [2018-07-25 08:46:50,298 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 1512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:50,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:50,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:46:50,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:46:50,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:46:50,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:46:50,607 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 58 states. [2018-07-25 08:46:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:51,624 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2018-07-25 08:46:51,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:46:51,624 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:46:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:51,625 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:46:51,625 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:46:51,626 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=7366, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:46:51,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:46:51,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:46:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:46:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 08:46:51,733 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-25 08:46:51,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:51,733 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 08:46:51,734 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:46:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 08:46:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:46:51,735 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:51,735 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 1, 1, 1, 1] [2018-07-25 08:46:51,735 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:51,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1280345023, now seen corresponding path program 54 times [2018-07-25 08:46:51,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 756 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:51,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:51,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:46:51,861 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:46:51,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:46:51,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=524, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:46:51,862 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 32 states. [2018-07-25 08:46:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:52,118 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-07-25 08:46:52,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:46:52,118 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 116 [2018-07-25 08:46:52,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:52,119 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:46:52,120 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:46:52,120 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1364, Invalid=2176, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:46:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:46:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:46:52,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:46:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-25 08:46:52,271 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2018-07-25 08:46:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:52,271 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-25 08:46:52,271 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:46:52,272 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-25 08:46:52,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:46:52,273 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:52,273 INFO L354 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-07-25 08:46:52,273 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:52,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2050868101, now seen corresponding path program 55 times [2018-07-25 08:46:52,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 1624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:52,703 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:52,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:46:52,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:46:52,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:46:52,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:46:52,704 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 60 states. [2018-07-25 08:46:53,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:53,836 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2018-07-25 08:46:53,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:46:53,836 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:46:53,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:53,837 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:46:53,837 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:46:53,839 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=7890, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:46:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:46:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:46:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:46:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 08:46:53,961 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118 [2018-07-25 08:46:53,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:53,962 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 08:46:53,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:46:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 08:46:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:46:53,965 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:53,965 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 1, 1, 1, 1] [2018-07-25 08:46:53,965 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:53,965 INFO L82 PathProgramCache]: Analyzing trace with hash 919584693, now seen corresponding path program 56 times [2018-07-25 08:46:53,965 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 812 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:54,068 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:54,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:46:54,068 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:46:54,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:46:54,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=557, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:46:54,069 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 33 states. [2018-07-25 08:46:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:54,277 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-07-25 08:46:54,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:46:54,278 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 120 [2018-07-25 08:46:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:54,279 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:46:54,279 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:46:54,280 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1456, Invalid=2326, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:46:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:46:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:46:54,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:46:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 08:46:54,382 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-25 08:46:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:54,383 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 08:46:54,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:46:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 08:46:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:46:54,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:54,384 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-07-25 08:46:54,384 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:54,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1042320657, now seen corresponding path program 57 times [2018-07-25 08:46:54,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:54,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:54,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:46:54,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:46:54,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:46:54,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:46:54,733 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 62 states. [2018-07-25 08:46:55,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:55,756 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2018-07-25 08:46:55,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:46:55,756 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:46:55,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:55,757 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:46:55,757 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:46:55,759 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=310, Invalid=8432, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:46:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:46:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:46:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:46:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-25 08:46:55,857 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-07-25 08:46:55,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:55,858 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-25 08:46:55,858 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:46:55,858 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-25 08:46:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:46:55,858 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:55,858 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 1, 1, 1, 1] [2018-07-25 08:46:55,859 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:55,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1571080489, now seen corresponding path program 58 times [2018-07-25 08:46:55,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 870 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:55,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:55,965 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:46:55,965 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:46:55,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:46:55,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:46:55,966 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 34 states. [2018-07-25 08:46:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:56,265 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-07-25 08:46:56,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:46:56,265 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 124 [2018-07-25 08:46:56,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:56,267 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:46:56,267 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:46:56,267 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1551, Invalid=2481, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:46:56,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:46:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:46:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:46:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 08:46:56,418 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124 [2018-07-25 08:46:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:56,419 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 08:46:56,419 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:46:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 08:46:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:46:56,420 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:56,420 INFO L354 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-07-25 08:46:56,420 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:56,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2020085917, now seen corresponding path program 59 times [2018-07-25 08:46:56,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 1860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:56,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:56,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:46:56,815 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:46:56,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:46:56,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:46:56,816 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 64 states. [2018-07-25 08:46:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:57,932 INFO L93 Difference]: Finished difference Result 193 states and 195 transitions. [2018-07-25 08:46:57,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:46:57,933 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:46:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:57,934 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:46:57,934 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:46:57,935 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=8992, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:46:57,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:46:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:46:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:46:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 08:46:58,058 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-07-25 08:46:58,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:58,059 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 08:46:58,059 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:46:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 08:46:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:46:58,060 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:58,060 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 1, 1, 1, 1] [2018-07-25 08:46:58,060 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:58,060 INFO L82 PathProgramCache]: Analyzing trace with hash 2012453021, now seen corresponding path program 60 times [2018-07-25 08:46:58,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 930 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:58,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:58,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:46:58,184 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:46:58,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:46:58,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=564, Invalid=626, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:46:58,185 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 35 states. [2018-07-25 08:46:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:58,444 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-07-25 08:46:58,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:46:58,445 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 128 [2018-07-25 08:46:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:58,446 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:46:58,446 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:46:58,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1649, Invalid=2641, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:46:58,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:46:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:46:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:46:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-25 08:46:58,610 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-07-25 08:46:58,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:58,611 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-25 08:46:58,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:46:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-25 08:46:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:46:58,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:58,612 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-07-25 08:46:58,612 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:58,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1232122327, now seen corresponding path program 61 times [2018-07-25 08:46:58,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 1984 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:59,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:59,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:46:59,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:46:59,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:46:59,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:46:59,012 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 66 states. [2018-07-25 08:47:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:00,150 INFO L93 Difference]: Finished difference Result 199 states and 201 transitions. [2018-07-25 08:47:00,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:47:00,150 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:47:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:00,151 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:47:00,151 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:47:00,152 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=330, Invalid=9570, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:47:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:47:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:47:00,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:47:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 08:47:00,305 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-07-25 08:47:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:00,306 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 08:47:00,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:47:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 08:47:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:47:00,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:00,308 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 32, 31, 1, 1, 1, 1] [2018-07-25 08:47:00,308 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:00,308 INFO L82 PathProgramCache]: Analyzing trace with hash -452907503, now seen corresponding path program 62 times [2018-07-25 08:47:00,309 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 992 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:00,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:00,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:47:00,414 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:47:00,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:47:00,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=662, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:47:00,415 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 36 states. [2018-07-25 08:47:00,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:00,664 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2018-07-25 08:47:00,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:47:00,664 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 132 [2018-07-25 08:47:00,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:00,665 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:47:00,665 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:47:00,666 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1750, Invalid=2806, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:47:00,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:47:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:47:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:47:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 08:47:00,766 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-07-25 08:47:00,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:00,766 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 08:47:00,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:47:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 08:47:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:47:00,767 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:00,768 INFO L354 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-07-25 08:47:00,768 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:00,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1452361141, now seen corresponding path program 63 times [2018-07-25 08:47:00,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 2112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:01,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:01,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:47:01,125 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:47:01,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:47:01,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:47:01,126 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 68 states. [2018-07-25 08:47:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:02,198 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2018-07-25 08:47:02,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:47:02,198 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:47:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:02,199 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:47:02,199 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:47:02,200 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=10166, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:47:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:47:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:47:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:47:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-25 08:47:02,305 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2018-07-25 08:47:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:02,305 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-25 08:47:02,305 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:47:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-25 08:47:02,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:47:02,306 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:02,306 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 33, 32, 1, 1, 1, 1] [2018-07-25 08:47:02,306 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:02,307 INFO L82 PathProgramCache]: Analyzing trace with hash -745371259, now seen corresponding path program 64 times [2018-07-25 08:47:02,307 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 1056 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:02,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:02,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:47:02,414 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:47:02,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:47:02,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=699, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:47:02,415 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 37 states. [2018-07-25 08:47:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:02,606 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-07-25 08:47:02,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:47:02,606 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 136 [2018-07-25 08:47:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:02,607 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:47:02,607 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:47:02,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1854, Invalid=2976, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:47:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:47:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:47:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:47:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 08:47:02,714 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-07-25 08:47:02,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:02,715 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 08:47:02,715 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:47:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 08:47:02,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:47:02,716 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:02,716 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-07-25 08:47:02,716 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:02,716 INFO L82 PathProgramCache]: Analyzing trace with hash 957810879, now seen corresponding path program 65 times [2018-07-25 08:47:02,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 2244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:03,108 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:03,109 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:47:03,109 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:47:03,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:47:03,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:47:03,110 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 70 states. [2018-07-25 08:47:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:04,145 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2018-07-25 08:47:04,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:47:04,145 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:47:04,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:04,146 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:47:04,146 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:47:04,147 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=350, Invalid=10780, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:47:04,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:47:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:47:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:47:04,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 08:47:04,250 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-25 08:47:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:04,250 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 08:47:04,250 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:47:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 08:47:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:47:04,251 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:04,251 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 1, 1, 1, 1] [2018-07-25 08:47:04,252 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:04,252 INFO L82 PathProgramCache]: Analyzing trace with hash 32287481, now seen corresponding path program 66 times [2018-07-25 08:47:04,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 1122 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:04,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:04,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:47:04,337 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:47:04,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:47:04,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=669, Invalid=737, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:47:04,338 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 38 states. [2018-07-25 08:47:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:04,578 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-07-25 08:47:04,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:47:04,579 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 140 [2018-07-25 08:47:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:04,580 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:47:04,580 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:47:04,580 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1961, Invalid=3151, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:47:04,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:47:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:47:04,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:47:04,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-25 08:47:04,698 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2018-07-25 08:47:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:04,698 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-25 08:47:04,698 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:47:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-25 08:47:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:47:04,699 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:04,699 INFO L354 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-07-25 08:47:04,699 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:04,700 INFO L82 PathProgramCache]: Analyzing trace with hash 963550515, now seen corresponding path program 67 times [2018-07-25 08:47:04,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:05,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:05,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:47:05,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:47:05,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:47:05,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:47:05,137 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 72 states. [2018-07-25 08:47:06,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:06,204 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2018-07-25 08:47:06,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:47:06,204 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:47:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:06,205 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:47:06,205 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:47:06,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=11412, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:47:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:47:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:47:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:47:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 08:47:06,332 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 142 [2018-07-25 08:47:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:06,332 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 08:47:06,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:47:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 08:47:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:47:06,333 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:06,333 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 1, 1, 1, 1] [2018-07-25 08:47:06,333 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:06,333 INFO L82 PathProgramCache]: Analyzing trace with hash 2111083117, now seen corresponding path program 68 times [2018-07-25 08:47:06,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1190 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:06,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:06,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:47:06,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:47:06,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:47:06,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=776, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:47:06,416 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 39 states. [2018-07-25 08:47:06,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:06,649 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-07-25 08:47:06,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:47:06,649 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 144 [2018-07-25 08:47:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:06,650 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:47:06,650 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:47:06,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2071, Invalid=3331, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:47:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:47:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:47:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:47:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 08:47:06,791 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-25 08:47:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:06,791 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 08:47:06,792 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:47:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 08:47:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:47:06,792 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:06,792 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-07-25 08:47:06,793 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:06,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1526364071, now seen corresponding path program 69 times [2018-07-25 08:47:06,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 2520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:07,361 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:07,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:47:07,361 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:47:07,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:47:07,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:47:07,362 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 74 states. [2018-07-25 08:47:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:08,602 INFO L93 Difference]: Finished difference Result 223 states and 225 transitions. [2018-07-25 08:47:08,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:47:08,602 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:47:08,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:08,603 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:47:08,603 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:47:08,604 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=370, Invalid=12062, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:47:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:47:08,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:47:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:47:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-25 08:47:08,728 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-07-25 08:47:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:08,728 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-25 08:47:08,728 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:47:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-25 08:47:08,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:47:08,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:08,729 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 36, 35, 1, 1, 1, 1] [2018-07-25 08:47:08,729 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:08,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1687109601, now seen corresponding path program 70 times [2018-07-25 08:47:08,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 1260 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:08,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:08,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:47:08,822 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:47:08,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:47:08,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=744, Invalid=816, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:47:08,823 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 40 states. [2018-07-25 08:47:09,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:09,076 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-07-25 08:47:09,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:47:09,076 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 148 [2018-07-25 08:47:09,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:09,077 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:47:09,077 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:47:09,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1295 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2184, Invalid=3516, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:47:09,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:47:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:47:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:47:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 08:47:09,188 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 148 [2018-07-25 08:47:09,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:09,188 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 08:47:09,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:47:09,188 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 08:47:09,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:47:09,189 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:09,189 INFO L354 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-07-25 08:47:09,190 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:09,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2109708315, now seen corresponding path program 71 times [2018-07-25 08:47:09,190 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 2664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:09,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:09,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:47:09,625 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:47:09,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:47:09,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:47:09,626 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 76 states. [2018-07-25 08:47:10,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:10,860 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2018-07-25 08:47:10,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:47:10,860 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:47:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:10,861 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:47:10,861 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:47:10,862 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=380, Invalid=12730, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:47:10,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:47:10,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:47:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:47:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 08:47:11,000 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-07-25 08:47:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:11,001 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 08:47:11,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:47:11,001 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 08:47:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:47:11,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:11,002 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 37, 36, 1, 1, 1, 1] [2018-07-25 08:47:11,002 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:11,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1562266795, now seen corresponding path program 72 times [2018-07-25 08:47:11,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 1332 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:11,103 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:11,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:47:11,103 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:47:11,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:47:11,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=857, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:47:11,104 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 41 states. [2018-07-25 08:47:11,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:11,330 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-07-25 08:47:11,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:47:11,330 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 152 [2018-07-25 08:47:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:11,332 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:47:11,332 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:47:11,333 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2300, Invalid=3706, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:47:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:47:11,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:47:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:47:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-25 08:47:11,473 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-07-25 08:47:11,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:11,473 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-25 08:47:11,473 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:47:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-25 08:47:11,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:47:11,474 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:11,474 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-07-25 08:47:11,475 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:11,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1900215951, now seen corresponding path program 73 times [2018-07-25 08:47:11,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 2812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:11,848 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:11,848 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:47:11,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:47:11,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:47:11,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:47:11,849 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 78 states. [2018-07-25 08:47:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:13,108 INFO L93 Difference]: Finished difference Result 235 states and 237 transitions. [2018-07-25 08:47:13,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:47:13,108 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:47:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:13,109 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:47:13,110 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:47:13,111 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=390, Invalid=13416, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:47:13,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:47:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:47:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:47:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 08:47:13,237 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-07-25 08:47:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:13,237 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 08:47:13,238 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:47:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 08:47:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:47:13,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:13,239 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 38, 37, 1, 1, 1, 1] [2018-07-25 08:47:13,239 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:13,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1257182007, now seen corresponding path program 74 times [2018-07-25 08:47:13,239 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 1406 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:13,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:13,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:47:13,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:47:13,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:47:13,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=899, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:47:13,354 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 42 states. [2018-07-25 08:47:13,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:13,584 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2018-07-25 08:47:13,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:47:13,585 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 156 [2018-07-25 08:47:13,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:13,586 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:47:13,586 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:47:13,587 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1443 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2419, Invalid=3901, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:47:13,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:47:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:47:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:47:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 08:47:13,717 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-07-25 08:47:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:13,718 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 08:47:13,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:47:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 08:47:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:47:13,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:13,719 INFO L354 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-07-25 08:47:13,719 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:13,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1266046205, now seen corresponding path program 75 times [2018-07-25 08:47:13,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 2964 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:14,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:14,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:47:14,184 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:47:14,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:47:14,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:47:14,185 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 80 states. [2018-07-25 08:47:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:15,383 INFO L93 Difference]: Finished difference Result 241 states and 243 transitions. [2018-07-25 08:47:15,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:47:15,383 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:47:15,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:15,384 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:47:15,384 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:47:15,386 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=400, Invalid=14120, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:47:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:47:15,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:47:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:47:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-25 08:47:15,512 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2018-07-25 08:47:15,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:15,512 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-25 08:47:15,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:47:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-25 08:47:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:47:15,513 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:15,513 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 1, 1, 1, 1] [2018-07-25 08:47:15,513 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1726082109, now seen corresponding path program 76 times [2018-07-25 08:47:15,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1482 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:15,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:15,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:47:15,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:47:15,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:47:15,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=942, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:47:15,607 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 43 states. [2018-07-25 08:47:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:15,818 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-07-25 08:47:15,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:47:15,819 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 160 [2018-07-25 08:47:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:15,820 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:47:15,820 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:47:15,820 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2541, Invalid=4101, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:47:15,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:47:15,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:47:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:47:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 08:47:15,946 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-07-25 08:47:15,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:15,946 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 08:47:15,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:47:15,946 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 08:47:15,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:47:15,947 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:15,947 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-07-25 08:47:15,947 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:15,947 INFO L82 PathProgramCache]: Analyzing trace with hash 907582839, now seen corresponding path program 77 times [2018-07-25 08:47:15,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 3120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:16,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:16,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:47:16,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:47:16,342 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:47:16,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:47:16,343 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 82 states. [2018-07-25 08:47:17,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:17,792 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2018-07-25 08:47:17,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:47:17,792 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:47:17,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:17,793 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:47:17,793 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:47:17,794 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=410, Invalid=14842, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:47:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:47:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:47:18,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:47:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 08:47:18,044 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-25 08:47:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:18,045 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 08:47:18,045 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:47:18,045 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 08:47:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:47:18,046 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:18,046 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 40, 39, 1, 1, 1, 1] [2018-07-25 08:47:18,046 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:18,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1818644047, now seen corresponding path program 78 times [2018-07-25 08:47:18,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 1560 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:18,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:18,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:47:18,208 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:47:18,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:47:18,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=906, Invalid=986, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:47:18,209 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 44 states. [2018-07-25 08:47:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:18,483 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-07-25 08:47:18,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:47:18,483 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 164 [2018-07-25 08:47:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:18,484 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:47:18,484 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:47:18,485 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2666, Invalid=4306, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:47:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:47:18,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:47:18,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:47:18,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-25 08:47:18,620 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2018-07-25 08:47:18,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:18,620 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-25 08:47:18,620 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:47:18,620 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-25 08:47:18,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:47:18,621 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:18,621 INFO L354 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-07-25 08:47:18,621 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:18,621 INFO L82 PathProgramCache]: Analyzing trace with hash 334812651, now seen corresponding path program 79 times [2018-07-25 08:47:18,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 3280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:19,005 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:19,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:47:19,005 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:47:19,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:47:19,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:47:19,006 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 84 states. [2018-07-25 08:47:20,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:20,311 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2018-07-25 08:47:20,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:47:20,311 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:47:20,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:20,312 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:47:20,312 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:47:20,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=420, Invalid=15582, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:47:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:47:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:47:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:47:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 08:47:20,461 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 166 [2018-07-25 08:47:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:20,461 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 08:47:20,462 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:47:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 08:47:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:47:20,463 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:20,463 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 1, 1, 1, 1] [2018-07-25 08:47:20,463 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:20,463 INFO L82 PathProgramCache]: Analyzing trace with hash -436388571, now seen corresponding path program 80 times [2018-07-25 08:47:20,463 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 1640 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:20,566 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:20,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:47:20,567 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:47:20,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:47:20,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=949, Invalid=1031, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:47:20,568 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 45 states. [2018-07-25 08:47:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:20,831 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2018-07-25 08:47:20,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:47:20,831 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 168 [2018-07-25 08:47:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:20,832 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:47:20,833 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:47:20,833 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2794, Invalid=4516, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:47:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:47:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:47:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:47:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 08:47:20,978 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-25 08:47:20,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:20,978 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 08:47:20,978 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:47:20,978 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 08:47:20,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:47:20,979 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:20,979 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-07-25 08:47:20,980 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1537430623, now seen corresponding path program 81 times [2018-07-25 08:47:20,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 3444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:21,718 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:21,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:47:21,718 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:47:21,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:47:21,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:47:21,719 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 86 states. [2018-07-25 08:47:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:23,016 INFO L93 Difference]: Finished difference Result 259 states and 261 transitions. [2018-07-25 08:47:23,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:47:23,016 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:47:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:23,017 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:47:23,017 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:47:23,018 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=430, Invalid=16340, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:47:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:47:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:47:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:47:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-25 08:47:23,165 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-07-25 08:47:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:23,165 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-25 08:47:23,165 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:47:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-25 08:47:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:47:23,166 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:23,166 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 42, 41, 1, 1, 1, 1] [2018-07-25 08:47:23,166 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:23,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1739485543, now seen corresponding path program 82 times [2018-07-25 08:47:23,166 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1722 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:23,273 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:23,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:47:23,274 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:47:23,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:47:23,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=993, Invalid=1077, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:47:23,275 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 46 states. [2018-07-25 08:47:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:23,568 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-07-25 08:47:23,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:47:23,568 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 172 [2018-07-25 08:47:23,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:23,569 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:47:23,569 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:47:23,570 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2925, Invalid=4731, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:47:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:47:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:47:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:47:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 08:47:23,732 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 172 [2018-07-25 08:47:23,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:23,733 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 08:47:23,733 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:47:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 08:47:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:47:23,733 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:23,733 INFO L354 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-07-25 08:47:23,734 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:23,734 INFO L82 PathProgramCache]: Analyzing trace with hash -903276333, now seen corresponding path program 83 times [2018-07-25 08:47:23,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 3612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:24,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:24,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:47:24,185 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:47:24,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:47:24,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:47:24,186 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 88 states. [2018-07-25 08:47:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:25,755 INFO L93 Difference]: Finished difference Result 265 states and 267 transitions. [2018-07-25 08:47:25,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:47:25,755 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:47:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:25,756 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:47:25,756 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:47:25,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=440, Invalid=17116, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:47:25,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:47:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:47:26,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:47:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 08:47:26,038 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-07-25 08:47:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:26,038 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 08:47:26,038 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:47:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 08:47:26,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:47:26,039 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:26,041 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 43, 42, 1, 1, 1, 1] [2018-07-25 08:47:26,042 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:26,042 INFO L82 PathProgramCache]: Analyzing trace with hash 878421517, now seen corresponding path program 84 times [2018-07-25 08:47:26,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 1806 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:26,229 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:26,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:47:26,230 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:47:26,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:47:26,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1038, Invalid=1124, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:47:26,231 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 47 states. [2018-07-25 08:47:26,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:26,567 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-07-25 08:47:26,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:47:26,568 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 176 [2018-07-25 08:47:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:26,569 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:47:26,569 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:47:26,570 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3059, Invalid=4951, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:47:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:47:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:47:26,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:47:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-25 08:47:26,747 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-07-25 08:47:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:26,747 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-25 08:47:26,747 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:47:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-25 08:47:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:47:26,748 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:26,748 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-07-25 08:47:26,748 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:26,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1945427129, now seen corresponding path program 85 times [2018-07-25 08:47:26,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 3784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:27,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:27,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:47:27,267 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:47:27,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:47:27,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:47:27,268 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 90 states. [2018-07-25 08:47:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:28,875 INFO L93 Difference]: Finished difference Result 271 states and 273 transitions. [2018-07-25 08:47:28,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:47:28,875 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:47:28,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:28,877 INFO L225 Difference]: With dead ends: 271 [2018-07-25 08:47:28,877 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:47:28,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=450, Invalid=17910, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:47:28,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:47:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:47:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:47:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 08:47:29,057 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-07-25 08:47:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:29,057 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 08:47:29,057 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:47:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 08:47:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:47:29,058 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:29,058 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 44, 43, 1, 1, 1, 1] [2018-07-25 08:47:29,058 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:29,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1398834049, now seen corresponding path program 86 times [2018-07-25 08:47:29,059 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 1892 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:29,235 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:29,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:47:29,236 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:47:29,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:47:29,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1084, Invalid=1172, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:47:29,237 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 48 states. [2018-07-25 08:47:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:29,600 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2018-07-25 08:47:29,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:47:29,600 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 180 [2018-07-25 08:47:29,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:29,601 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:47:29,601 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:47:29,602 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1935 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3196, Invalid=5176, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:47:29,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:47:29,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:47:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:47:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 08:47:29,803 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-07-25 08:47:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:29,804 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 08:47:29,804 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:47:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 08:47:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:47:29,805 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:29,805 INFO L354 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-07-25 08:47:29,806 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:29,806 INFO L82 PathProgramCache]: Analyzing trace with hash -45190213, now seen corresponding path program 87 times [2018-07-25 08:47:29,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 3960 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:30,404 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:30,404 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:47:30,404 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:47:30,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:47:30,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:47:30,405 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 92 states. [2018-07-25 08:47:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:32,016 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2018-07-25 08:47:32,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:47:32,016 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:47:32,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:32,017 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:47:32,018 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:47:32,020 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=460, Invalid=18722, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:47:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:47:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:47:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:47:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-25 08:47:32,189 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2018-07-25 08:47:32,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:32,189 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-25 08:47:32,189 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:47:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-25 08:47:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:47:32,190 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:32,190 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 45, 44, 1, 1, 1, 1] [2018-07-25 08:47:32,190 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:32,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1579493109, now seen corresponding path program 88 times [2018-07-25 08:47:32,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 1980 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:32,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:32,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:47:32,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:47:32,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:47:32,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=1221, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:47:32,306 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 49 states. [2018-07-25 08:47:32,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:32,672 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-07-25 08:47:32,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:47:32,672 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 184 [2018-07-25 08:47:32,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:32,673 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:47:32,673 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:47:32,674 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2024 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3336, Invalid=5406, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:47:32,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:47:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:47:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:47:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 08:47:32,845 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-07-25 08:47:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:32,845 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 08:47:32,845 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:47:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 08:47:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:47:32,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:32,846 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-07-25 08:47:32,846 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:32,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1769474607, now seen corresponding path program 89 times [2018-07-25 08:47:32,846 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 4140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:33,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:33,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:47:33,307 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:47:33,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:47:33,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:47:33,308 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 94 states. [2018-07-25 08:47:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:35,041 INFO L93 Difference]: Finished difference Result 283 states and 285 transitions. [2018-07-25 08:47:35,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:47:35,041 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:47:35,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:35,042 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:47:35,042 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:47:35,043 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=470, Invalid=19552, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:47:35,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:47:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:47:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:47:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 08:47:35,220 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-25 08:47:35,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:35,220 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 08:47:35,220 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:47:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 08:47:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:47:35,221 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:35,221 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 46, 45, 1, 1, 1, 1] [2018-07-25 08:47:35,221 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1290702953, now seen corresponding path program 90 times [2018-07-25 08:47:35,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 2070 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:35,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:35,338 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:47:35,338 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:47:35,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:47:35,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:47:35,339 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 50 states. [2018-07-25 08:47:35,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:35,607 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2018-07-25 08:47:35,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:47:35,607 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 188 [2018-07-25 08:47:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:35,608 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:47:35,608 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:47:35,609 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2115 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3479, Invalid=5641, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:47:35,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:47:35,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:47:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:47:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-25 08:47:35,781 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2018-07-25 08:47:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:35,781 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-25 08:47:35,781 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:47:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-25 08:47:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:47:35,782 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:35,782 INFO L354 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-07-25 08:47:35,783 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:35,783 INFO L82 PathProgramCache]: Analyzing trace with hash -879958365, now seen corresponding path program 91 times [2018-07-25 08:47:35,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 4324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:36,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:36,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:47:36,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:47:36,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:47:36,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=8931, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:47:36,309 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 96 states. [2018-07-25 08:47:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:38,081 INFO L93 Difference]: Finished difference Result 289 states and 291 transitions. [2018-07-25 08:47:38,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:47:38,081 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:47:38,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:38,082 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:47:38,082 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:47:38,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=480, Invalid=20400, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:47:38,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:47:38,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:47:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:47:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 08:47:38,379 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 190 [2018-07-25 08:47:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:38,380 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 08:47:38,380 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:47:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 08:47:38,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:47:38,381 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:38,381 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 47, 46, 1, 1, 1, 1] [2018-07-25 08:47:38,382 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:38,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1736556509, now seen corresponding path program 92 times [2018-07-25 08:47:38,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 2162 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:38,565 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:38,565 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:47:38,566 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:47:38,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:47:38,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=1322, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:47:38,566 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 51 states. [2018-07-25 08:47:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:38,864 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2018-07-25 08:47:38,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:47:38,864 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 192 [2018-07-25 08:47:38,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:38,865 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:47:38,865 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:47:38,866 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3625, Invalid=5881, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:47:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:47:39,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:47:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:47:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 08:47:39,068 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-25 08:47:39,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:39,068 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 08:47:39,068 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:47:39,068 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 08:47:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:47:39,069 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:39,069 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-07-25 08:47:39,069 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:39,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1911420649, now seen corresponding path program 93 times [2018-07-25 08:47:39,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 4512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:39,600 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:39,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:47:39,600 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:47:39,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:47:39,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=9313, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:47:39,601 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 98 states. [2018-07-25 08:47:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:41,444 INFO L93 Difference]: Finished difference Result 295 states and 297 transitions. [2018-07-25 08:47:41,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:47:41,444 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:47:41,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:41,445 INFO L225 Difference]: With dead ends: 295 [2018-07-25 08:47:41,445 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:47:41,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=490, Invalid=21266, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:47:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:47:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:47:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:47:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-25 08:47:41,660 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-07-25 08:47:41,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:41,660 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-25 08:47:41,660 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:47:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-25 08:47:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:47:41,662 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:41,662 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 48, 47, 1, 1, 1, 1] [2018-07-25 08:47:41,662 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:41,662 INFO L82 PathProgramCache]: Analyzing trace with hash 86226257, now seen corresponding path program 94 times [2018-07-25 08:47:41,662 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 2256 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:41,825 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:41,825 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:47:41,826 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:47:41,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:47:41,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1278, Invalid=1374, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:47:41,826 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 52 states. [2018-07-25 08:47:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:42,172 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-07-25 08:47:42,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:47:42,172 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 196 [2018-07-25 08:47:42,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:42,173 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:47:42,173 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:47:42,174 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3774, Invalid=6126, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:47:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:47:42,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:47:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:47:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 08:47:42,387 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 196 [2018-07-25 08:47:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:42,387 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 08:47:42,387 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:47:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 08:47:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:47:42,388 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:42,388 INFO L354 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-07-25 08:47:42,388 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:42,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1259106699, now seen corresponding path program 95 times [2018-07-25 08:47:42,389 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 4704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:42,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:42,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:47:42,980 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:47:42,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:47:42,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=9703, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:47:42,981 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 100 states. [2018-07-25 08:47:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:44,908 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2018-07-25 08:47:44,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:47:44,908 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:47:44,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:44,909 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:47:44,909 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:47:44,911 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=500, Invalid=22150, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:47:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:47:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:47:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:47:45,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 08:47:45,125 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-07-25 08:47:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:45,126 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 08:47:45,126 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:47:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 08:47:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:47:45,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:45,127 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 49, 48, 1, 1, 1, 1] [2018-07-25 08:47:45,127 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:45,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1285124293, now seen corresponding path program 96 times [2018-07-25 08:47:45,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4802 backedges. 2352 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:45,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:45,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:47:45,274 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:47:45,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:47:45,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=1427, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:47:45,275 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 53 states. [2018-07-25 08:47:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:45,615 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2018-07-25 08:47:45,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:47:45,615 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 200 [2018-07-25 08:47:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:45,616 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:47:45,616 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:47:45,617 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2400 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3926, Invalid=6376, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:47:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:47:45,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:47:45,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:47:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-25 08:47:45,840 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-07-25 08:47:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:45,840 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-25 08:47:45,840 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:47:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-25 08:47:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:47:45,841 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:45,841 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-07-25 08:47:45,842 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:45,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1946083329, now seen corresponding path program 97 times [2018-07-25 08:47:45,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:46,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:46,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:47:46,374 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:47:46,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:47:46,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=10101, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:47:46,375 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 102 states. [2018-07-25 08:47:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:48,351 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2018-07-25 08:47:48,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:47:48,352 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:47:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:48,352 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:47:48,352 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:47:48,353 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1279 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=510, Invalid=23052, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:47:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:47:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:47:48,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:47:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 08:47:48,550 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-07-25 08:47:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:48,550 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 08:47:48,550 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:47:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 08:47:48,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:47:48,551 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:48,552 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 50, 49, 1, 1, 1, 1] [2018-07-25 08:47:48,552 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:48,552 INFO L82 PathProgramCache]: Analyzing trace with hash -198708679, now seen corresponding path program 98 times [2018-07-25 08:47:48,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 2450 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:48,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:48,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:47:48,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:47:48,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:47:48,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1381, Invalid=1481, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:47:48,703 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 54 states. [2018-07-25 08:47:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:49,033 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2018-07-25 08:47:49,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:47:49,033 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 204 [2018-07-25 08:47:49,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:49,034 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:47:49,034 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:47:49,035 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4081, Invalid=6631, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:47:49,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:47:49,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:47:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:47:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 08:47:49,258 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-07-25 08:47:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:49,258 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 08:47:49,259 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:47:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 08:47:49,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:47:49,259 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:49,259 INFO L354 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-07-25 08:47:49,260 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:49,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1980427149, now seen corresponding path program 99 times [2018-07-25 08:47:49,260 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 5100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:49,827 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:49,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:47:49,827 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:47:49,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:47:49,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=10507, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:47:49,828 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 104 states. [2018-07-25 08:47:51,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:51,930 INFO L93 Difference]: Finished difference Result 313 states and 315 transitions. [2018-07-25 08:47:51,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:47:51,930 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:47:51,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:51,931 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:47:51,931 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:47:51,932 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=520, Invalid=23972, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:47:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:47:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:47:52,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:47:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-25 08:47:52,139 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2018-07-25 08:47:52,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:52,139 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-25 08:47:52,139 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:47:52,139 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-25 08:47:52,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:47:52,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:52,140 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 51, 50, 1, 1, 1, 1] [2018-07-25 08:47:52,140 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:52,140 INFO L82 PathProgramCache]: Analyzing trace with hash 26491309, now seen corresponding path program 100 times [2018-07-25 08:47:52,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5202 backedges. 2550 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:52,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:52,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:47:52,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:47:52,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:47:52,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1434, Invalid=1536, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:47:52,300 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 55 states. [2018-07-25 08:47:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:52,662 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-07-25 08:47:52,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:47:52,663 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 208 [2018-07-25 08:47:52,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:52,664 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:47:52,664 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:47:52,666 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4239, Invalid=6891, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:47:52,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:47:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:47:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:47:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 08:47:52,891 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-07-25 08:47:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:52,891 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 08:47:52,891 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:47:52,891 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 08:47:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:47:52,892 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:52,892 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-07-25 08:47:52,893 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:52,893 INFO L82 PathProgramCache]: Analyzing trace with hash -311603481, now seen corresponding path program 101 times [2018-07-25 08:47:52,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 5304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:53,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:53,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:47:53,562 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:47:53,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:47:53,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=10921, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:47:53,563 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 106 states. [2018-07-25 08:47:55,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:55,711 INFO L93 Difference]: Finished difference Result 319 states and 321 transitions. [2018-07-25 08:47:55,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:47:55,711 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:47:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:55,712 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:47:55,712 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:47:55,714 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=530, Invalid=24910, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:47:55,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:47:55,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:47:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:47:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 08:47:55,939 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-25 08:47:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:55,939 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 08:47:55,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:47:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 08:47:55,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:47:55,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:55,940 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 52, 51, 1, 1, 1, 1] [2018-07-25 08:47:55,941 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:55,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1977399519, now seen corresponding path program 102 times [2018-07-25 08:47:55,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 2652 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:56,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:56,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:47:56,151 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:47:56,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:47:56,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1488, Invalid=1592, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:47:56,152 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 56 states. [2018-07-25 08:47:56,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:56,519 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2018-07-25 08:47:56,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:47:56,519 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 212 [2018-07-25 08:47:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:56,520 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:47:56,520 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:47:56,521 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2703 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4400, Invalid=7156, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:47:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:47:56,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:47:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:47:56,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-25 08:47:56,754 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2018-07-25 08:47:56,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:56,755 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-25 08:47:56,755 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:47:56,755 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-25 08:47:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:47:56,755 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:56,756 INFO L354 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-07-25 08:47:56,756 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:56,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1905340581, now seen corresponding path program 103 times [2018-07-25 08:47:56,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 5512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:57,317 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:57,317 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:47:57,318 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:47:57,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:47:57,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=11343, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:47:57,319 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 108 states. [2018-07-25 08:47:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:59,489 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2018-07-25 08:47:59,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:47:59,489 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:47:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:59,490 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:47:59,490 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:47:59,492 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1435 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=540, Invalid=25866, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:47:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:47:59,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:47:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:47:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 08:47:59,722 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 214 [2018-07-25 08:47:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:59,723 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 08:47:59,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:47:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 08:47:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:47:59,723 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:59,723 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 53, 52, 1, 1, 1, 1] [2018-07-25 08:47:59,724 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:59,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1922701973, now seen corresponding path program 104 times [2018-07-25 08:47:59,724 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5618 backedges. 2756 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:59,873 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:59,873 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:47:59,873 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:47:59,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:47:59,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1543, Invalid=1649, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:47:59,874 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 57 states. [2018-07-25 08:48:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:00,235 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-07-25 08:48:00,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:48:00,235 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 216 [2018-07-25 08:48:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:00,236 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:48:00,236 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:48:00,237 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2808 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4564, Invalid=7426, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:48:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:48:00,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:48:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:48:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 08:48:00,464 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-25 08:48:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:00,464 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 08:48:00,464 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:48:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 08:48:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:48:00,465 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:00,465 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-07-25 08:48:00,465 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:00,465 INFO L82 PathProgramCache]: Analyzing trace with hash 880711119, now seen corresponding path program 105 times [2018-07-25 08:48:00,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 5724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:01,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:01,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:48:01,070 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:48:01,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:48:01,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=11773, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:48:01,071 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 110 states. [2018-07-25 08:48:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:03,278 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2018-07-25 08:48:03,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:48:03,278 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:48:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:03,279 INFO L225 Difference]: With dead ends: 331 [2018-07-25 08:48:03,279 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:48:03,281 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=550, Invalid=26840, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:48:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:48:03,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:48:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:48:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-25 08:48:03,517 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-07-25 08:48:03,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:03,517 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-25 08:48:03,517 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:48:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-25 08:48:03,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:48:03,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:03,518 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 54, 53, 1, 1, 1, 1] [2018-07-25 08:48:03,519 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:03,519 INFO L82 PathProgramCache]: Analyzing trace with hash 792572937, now seen corresponding path program 106 times [2018-07-25 08:48:03,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2862 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:03,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:03,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:48:03,682 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:48:03,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:48:03,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=1707, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:48:03,683 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 58 states. [2018-07-25 08:48:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:04,041 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-07-25 08:48:04,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:48:04,041 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 220 [2018-07-25 08:48:04,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:04,042 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:48:04,042 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:48:04,042 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2915 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4731, Invalid=7701, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:48:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:48:04,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:48:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:48:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 08:48:04,282 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 220 [2018-07-25 08:48:04,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:04,283 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 08:48:04,283 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:48:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 08:48:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:48:04,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:04,284 INFO L354 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-07-25 08:48:04,284 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1453433411, now seen corresponding path program 107 times [2018-07-25 08:48:04,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 5940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:05,001 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:05,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:48:05,002 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:48:05,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:48:05,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=12211, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:48:05,003 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 112 states. [2018-07-25 08:48:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:07,447 INFO L93 Difference]: Finished difference Result 337 states and 339 transitions. [2018-07-25 08:48:07,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:48:07,447 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:48:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:07,448 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:48:07,448 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:48:07,450 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=560, Invalid=27832, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:48:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:48:07,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:48:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:48:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 08:48:07,718 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-07-25 08:48:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:07,718 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 08:48:07,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:48:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 08:48:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:48:07,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:07,719 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 55, 54, 1, 1, 1, 1] [2018-07-25 08:48:07,719 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:07,719 INFO L82 PathProgramCache]: Analyzing trace with hash -2083318915, now seen corresponding path program 108 times [2018-07-25 08:48:07,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 2970 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:07,891 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:07,891 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:48:07,891 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:48:07,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:48:07,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1656, Invalid=1766, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:48:07,892 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 59 states. [2018-07-25 08:48:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:08,304 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-07-25 08:48:08,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:48:08,304 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 224 [2018-07-25 08:48:08,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:08,305 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:48:08,305 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:48:08,306 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3024 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4901, Invalid=7981, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:48:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:48:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:48:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:48:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-25 08:48:08,575 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-07-25 08:48:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:08,575 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-25 08:48:08,575 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:48:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-25 08:48:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:48:08,576 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:08,576 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-07-25 08:48:08,576 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:08,576 INFO L82 PathProgramCache]: Analyzing trace with hash -614665033, now seen corresponding path program 109 times [2018-07-25 08:48:08,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 6160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:09,307 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:09,307 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:48:09,307 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:48:09,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:48:09,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=12657, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:48:09,308 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 114 states. [2018-07-25 08:48:11,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:11,770 INFO L93 Difference]: Finished difference Result 343 states and 345 transitions. [2018-07-25 08:48:11,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:48:11,770 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:48:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:11,771 INFO L225 Difference]: With dead ends: 343 [2018-07-25 08:48:11,771 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:48:11,773 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=570, Invalid=28842, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:48:11,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:48:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:48:12,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:48:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 08:48:12,038 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-07-25 08:48:12,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:12,038 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 08:48:12,038 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:48:12,038 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 08:48:12,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:48:12,039 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:12,039 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 56, 55, 1, 1, 1, 1] [2018-07-25 08:48:12,040 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:12,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1134508273, now seen corresponding path program 110 times [2018-07-25 08:48:12,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6272 backedges. 3080 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:12,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:12,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:48:12,212 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:48:12,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:48:12,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1714, Invalid=1826, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:48:12,212 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 60 states. [2018-07-25 08:48:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:12,644 INFO L93 Difference]: Finished difference Result 233 states and 234 transitions. [2018-07-25 08:48:12,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:48:12,644 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 228 [2018-07-25 08:48:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:12,645 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:48:12,645 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:48:12,646 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5074, Invalid=8266, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:48:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:48:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:48:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:48:13,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 08:48:13,076 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-07-25 08:48:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:13,077 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 08:48:13,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:48:13,077 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 08:48:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:48:13,077 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:13,077 INFO L354 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-07-25 08:48:13,078 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:13,078 INFO L82 PathProgramCache]: Analyzing trace with hash -659190485, now seen corresponding path program 111 times [2018-07-25 08:48:13,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 6384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:13,777 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:13,777 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:48:13,777 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:48:13,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:48:13,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=13111, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:48:13,778 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 116 states. [2018-07-25 08:48:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:16,170 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2018-07-25 08:48:16,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:48:16,170 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 08:48:16,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:16,170 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:48:16,171 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:48:16,172 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=580, Invalid=29870, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:48:16,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:48:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:48:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:48:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-25 08:48:16,450 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 230 [2018-07-25 08:48:16,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:16,451 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-25 08:48:16,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:48:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-25 08:48:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:48:16,451 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:16,451 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 57, 56, 1, 1, 1, 1] [2018-07-25 08:48:16,452 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:16,452 INFO L82 PathProgramCache]: Analyzing trace with hash 291972197, now seen corresponding path program 112 times [2018-07-25 08:48:16,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 3192 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:16,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:16,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:48:16,629 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:48:16,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:48:16,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1773, Invalid=1887, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:48:16,629 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 61 states. [2018-07-25 08:48:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:17,053 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-07-25 08:48:17,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:48:17,053 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 232 [2018-07-25 08:48:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:17,054 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:48:17,054 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:48:17,055 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3248 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5250, Invalid=8556, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:48:17,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:48:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:48:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:48:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 08:48:17,331 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-07-25 08:48:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:17,331 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 08:48:17,331 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:48:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 08:48:17,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:48:17,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:17,332 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-07-25 08:48:17,332 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:17,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1412459423, now seen corresponding path program 113 times [2018-07-25 08:48:17,332 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 6612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:18,060 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:18,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:48:18,061 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:48:18,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:48:18,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=13573, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:48:18,061 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 118 states. [2018-07-25 08:48:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:20,574 INFO L93 Difference]: Finished difference Result 355 states and 357 transitions. [2018-07-25 08:48:20,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:48:20,574 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 08:48:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:20,575 INFO L225 Difference]: With dead ends: 355 [2018-07-25 08:48:20,575 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:48:20,577 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1715 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=590, Invalid=30916, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:48:20,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:48:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:48:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:48:20,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-25 08:48:20,840 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-25 08:48:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:20,841 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-25 08:48:20,841 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:48:20,841 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-25 08:48:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:48:20,841 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:20,841 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 58, 57, 1, 1, 1, 1] [2018-07-25 08:48:20,842 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:20,842 INFO L82 PathProgramCache]: Analyzing trace with hash 527422937, now seen corresponding path program 114 times [2018-07-25 08:48:20,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6728 backedges. 3306 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:21,020 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:21,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:48:21,020 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:48:21,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:48:21,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1833, Invalid=1949, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:48:21,021 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 62 states. [2018-07-25 08:48:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:21,439 INFO L93 Difference]: Finished difference Result 241 states and 242 transitions. [2018-07-25 08:48:21,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:48:21,440 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 236 [2018-07-25 08:48:21,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:21,440 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:48:21,440 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:48:21,441 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3363 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5429, Invalid=8851, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:48:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:48:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:48:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:48:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-07-25 08:48:21,719 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 236 [2018-07-25 08:48:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:21,720 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-07-25 08:48:21,720 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:48:21,720 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-07-25 08:48:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:48:21,721 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:21,721 INFO L354 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-07-25 08:48:21,721 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:21,721 INFO L82 PathProgramCache]: Analyzing trace with hash 47353875, now seen corresponding path program 115 times [2018-07-25 08:48:21,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 6844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:22,463 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:22,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:48:22,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:48:22,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:48:22,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=14043, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:48:22,465 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 120 states. [2018-07-25 08:48:25,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:25,179 INFO L93 Difference]: Finished difference Result 361 states and 363 transitions. [2018-07-25 08:48:25,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:48:25,179 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 08:48:25,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:25,180 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:48:25,180 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:48:25,181 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=600, Invalid=31980, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:48:25,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:48:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:48:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:48:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-25 08:48:25,476 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 238 [2018-07-25 08:48:25,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:25,476 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-25 08:48:25,476 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:48:25,476 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-25 08:48:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:48:25,477 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:25,477 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 59, 58, 1, 1, 1, 1] [2018-07-25 08:48:25,477 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:25,477 INFO L82 PathProgramCache]: Analyzing trace with hash -276935347, now seen corresponding path program 116 times [2018-07-25 08:48:25,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6962 backedges. 3422 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:25,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:25,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:48:25,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:48:25,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:48:25,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1894, Invalid=2012, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:48:25,677 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 63 states. [2018-07-25 08:48:26,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:26,103 INFO L93 Difference]: Finished difference Result 245 states and 246 transitions. [2018-07-25 08:48:26,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:48:26,103 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 240 [2018-07-25 08:48:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:26,104 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:48:26,104 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:48:26,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5611, Invalid=9151, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:48:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:48:26,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:48:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:48:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 08:48:26,392 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-25 08:48:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:26,392 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 08:48:26,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:48:26,393 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 08:48:26,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:48:26,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:26,393 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-07-25 08:48:26,393 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:26,394 INFO L82 PathProgramCache]: Analyzing trace with hash 153156231, now seen corresponding path program 117 times [2018-07-25 08:48:26,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 7080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:27,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:27,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:48:27,153 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:48:27,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:48:27,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=14521, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:48:27,154 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 122 states. [2018-07-25 08:48:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:30,071 INFO L93 Difference]: Finished difference Result 367 states and 369 transitions. [2018-07-25 08:48:30,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:48:30,071 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 08:48:30,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:30,072 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:48:30,072 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:48:30,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=610, Invalid=33062, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:48:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:48:30,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:48:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:48:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-07-25 08:48:30,356 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-07-25 08:48:30,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:30,356 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-07-25 08:48:30,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:48:30,356 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-07-25 08:48:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:48:30,356 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:30,357 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 60, 59, 1, 1, 1, 1] [2018-07-25 08:48:30,357 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:30,357 INFO L82 PathProgramCache]: Analyzing trace with hash 316115649, now seen corresponding path program 118 times [2018-07-25 08:48:30,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 3540 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:30,569 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:30,570 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:48:30,570 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:48:30,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:48:30,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1956, Invalid=2076, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:48:30,570 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 64 states. [2018-07-25 08:48:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:31,071 INFO L93 Difference]: Finished difference Result 249 states and 250 transitions. [2018-07-25 08:48:31,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:48:31,071 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 244 [2018-07-25 08:48:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:31,072 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:48:31,072 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:48:31,073 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3599 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5796, Invalid=9456, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:48:31,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:48:31,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:48:31,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:48:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-25 08:48:31,398 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 244 [2018-07-25 08:48:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:31,398 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-25 08:48:31,398 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:48:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-25 08:48:31,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:48:31,399 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:31,399 INFO L354 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-07-25 08:48:31,399 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:31,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1155486981, now seen corresponding path program 119 times [2018-07-25 08:48:31,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 7320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:32,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:32,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:48:32,180 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:48:32,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:48:32,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=15007, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:48:32,181 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 124 states. [2018-07-25 08:48:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:34,956 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2018-07-25 08:48:34,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:48:34,957 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 08:48:34,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:34,957 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:48:34,957 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:48:34,960 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=620, Invalid=34162, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:48:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:48:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:48:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:48:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-25 08:48:35,256 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-07-25 08:48:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:35,256 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-25 08:48:35,256 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:48:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-25 08:48:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:48:35,257 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:35,257 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 61, 60, 1, 1, 1, 1] [2018-07-25 08:48:35,257 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:35,257 INFO L82 PathProgramCache]: Analyzing trace with hash -364868043, now seen corresponding path program 120 times [2018-07-25 08:48:35,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7442 backedges. 3660 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:35,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:35,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:48:35,482 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:48:35,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:48:35,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2019, Invalid=2141, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:48:35,482 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 65 states. [2018-07-25 08:48:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:35,959 INFO L93 Difference]: Finished difference Result 253 states and 254 transitions. [2018-07-25 08:48:35,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:48:35,959 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 248 [2018-07-25 08:48:35,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:35,959 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:48:35,959 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:48:35,960 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3720 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5984, Invalid=9766, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:48:35,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:48:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 08:48:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:48:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-25 08:48:36,261 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-07-25 08:48:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:36,262 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-25 08:48:36,262 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:48:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-25 08:48:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:48:36,262 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:36,263 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-07-25 08:48:36,263 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:36,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1549181295, now seen corresponding path program 121 times [2018-07-25 08:48:36,263 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 7564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:37,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:37,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:48:37,022 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:48:37,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:48:37,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=15501, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:48:37,023 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 126 states. [2018-07-25 08:48:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:39,905 INFO L93 Difference]: Finished difference Result 379 states and 381 transitions. [2018-07-25 08:48:39,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:48:39,906 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 08:48:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:39,907 INFO L225 Difference]: With dead ends: 379 [2018-07-25 08:48:39,907 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:48:39,910 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1957 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=630, Invalid=35280, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:48:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:48:40,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:48:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:48:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-25 08:48:40,277 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-07-25 08:48:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:40,277 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-25 08:48:40,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:48:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-25 08:48:40,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:48:40,278 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:40,278 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 62, 61, 1, 1, 1, 1] [2018-07-25 08:48:40,278 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:40,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1711167401, now seen corresponding path program 122 times [2018-07-25 08:48:40,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 3782 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:40,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:40,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:48:40,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:48:40,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:48:40,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:48:40,489 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 66 states. [2018-07-25 08:48:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:41,013 INFO L93 Difference]: Finished difference Result 257 states and 258 transitions. [2018-07-25 08:48:41,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:48:41,013 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 252 [2018-07-25 08:48:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:41,014 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:48:41,014 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:48:41,015 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3843 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6175, Invalid=10081, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:48:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:48:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 08:48:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:48:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-25 08:48:41,343 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-07-25 08:48:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:41,343 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-25 08:48:41,344 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:48:41,344 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-25 08:48:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:48:41,345 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:41,345 INFO L354 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-07-25 08:48:41,345 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash -540549661, now seen corresponding path program 123 times [2018-07-25 08:48:41,345 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:42,188 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:42,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:48:42,188 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:48:42,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:48:42,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=16003, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:48:42,189 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 128 states. [2018-07-25 08:48:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:45,345 INFO L93 Difference]: Finished difference Result 385 states and 387 transitions. [2018-07-25 08:48:45,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:48:45,345 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 08:48:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:45,345 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:48:45,345 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:48:45,347 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2020 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=640, Invalid=36416, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:48:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:48:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:48:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:48:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-07-25 08:48:45,694 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 254 [2018-07-25 08:48:45,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:45,694 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-07-25 08:48:45,694 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:48:45,694 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-07-25 08:48:45,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:48:45,695 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:45,695 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 63, 62, 1, 1, 1, 1] [2018-07-25 08:48:45,695 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:45,695 INFO L82 PathProgramCache]: Analyzing trace with hash -975837411, now seen corresponding path program 124 times [2018-07-25 08:48:45,696 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 3906 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:45,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:45,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:48:45,917 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:48:45,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:48:45,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2148, Invalid=2274, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:48:45,918 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 67 states. [2018-07-25 08:48:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:46,451 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2018-07-25 08:48:46,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:48:46,451 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 256 [2018-07-25 08:48:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:46,452 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:48:46,452 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:48:46,453 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3968 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6369, Invalid=10401, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:48:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:48:46,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 08:48:46,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:48:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 08:48:46,774 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-07-25 08:48:46,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:46,775 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 08:48:46,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:48:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 08:48:46,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:48:46,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:46,776 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-07-25 08:48:46,776 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:46,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1476829097, now seen corresponding path program 125 times [2018-07-25 08:48:46,777 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 8064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:47,645 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:47,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:48:47,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:48:47,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:48:47,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=16513, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:48:47,646 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 130 states. [2018-07-25 08:48:50,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:50,974 INFO L93 Difference]: Finished difference Result 391 states and 393 transitions. [2018-07-25 08:48:50,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:48:50,974 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 08:48:50,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:50,975 INFO L225 Difference]: With dead ends: 391 [2018-07-25 08:48:50,975 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 08:48:50,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2084 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=650, Invalid=37570, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:48:50,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 08:48:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 08:48:51,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:48:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-25 08:48:51,307 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-25 08:48:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:51,307 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-25 08:48:51,307 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:48:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-25 08:48:51,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:48:51,308 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:51,308 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 64, 63, 1, 1, 1, 1] [2018-07-25 08:48:51,309 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:51,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1493974161, now seen corresponding path program 126 times [2018-07-25 08:48:51,309 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8192 backedges. 4032 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:51,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:51,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:48:51,536 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:48:51,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:48:51,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2214, Invalid=2342, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:48:51,537 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 68 states. [2018-07-25 08:48:52,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:52,029 INFO L93 Difference]: Finished difference Result 265 states and 266 transitions. [2018-07-25 08:48:52,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:48:52,029 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 260 [2018-07-25 08:48:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:52,030 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:48:52,031 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:48:52,032 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4095 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6566, Invalid=10726, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:48:52,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:48:52,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-25 08:48:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:48:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-07-25 08:48:52,388 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 260 [2018-07-25 08:48:52,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:52,388 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-07-25 08:48:52,388 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:48:52,388 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-07-25 08:48:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:48:52,389 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:52,389 INFO L354 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-07-25 08:48:52,390 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:52,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1190144203, now seen corresponding path program 127 times [2018-07-25 08:48:52,390 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 8320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:53,307 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:53,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:48:53,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:48:53,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:48:53,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=17031, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:48:53,309 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 132 states. [2018-07-25 08:48:56,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:56,402 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2018-07-25 08:48:56,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:48:56,403 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 08:48:56,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:56,403 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:48:56,403 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:48:56,406 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=660, Invalid=38742, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:48:56,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:48:56,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:48:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:48:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-25 08:48:56,739 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 262 [2018-07-25 08:48:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:56,740 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-25 08:48:56,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:48:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-25 08:48:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:48:56,741 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:56,741 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 65, 64, 1, 1, 1, 1] [2018-07-25 08:48:56,741 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:56,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1046894597, now seen corresponding path program 128 times [2018-07-25 08:48:56,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8450 backedges. 4160 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:56,950 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:56,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:48:56,951 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:48:56,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:48:56,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=2411, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:48:56,951 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 69 states. [2018-07-25 08:48:57,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:57,459 INFO L93 Difference]: Finished difference Result 269 states and 270 transitions. [2018-07-25 08:48:57,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:48:57,460 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 264 [2018-07-25 08:48:57,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:57,460 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:48:57,460 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:48:57,461 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4224 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6766, Invalid=11056, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:48:57,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:48:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-25 08:48:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:48:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 08:48:57,829 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-25 08:48:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:57,830 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 08:48:57,830 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:48:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 08:48:57,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:48:57,830 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:57,830 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-07-25 08:48:57,831 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:57,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1043412799, now seen corresponding path program 129 times [2018-07-25 08:48:57,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 8580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:58,696 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:58,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:48:58,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:48:58,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:48:58,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=17557, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:48:58,698 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 134 states. [2018-07-25 08:49:01,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:01,937 INFO L93 Difference]: Finished difference Result 403 states and 405 transitions. [2018-07-25 08:49:01,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:49:01,938 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 08:49:01,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:01,938 INFO L225 Difference]: With dead ends: 403 [2018-07-25 08:49:01,938 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:49:01,941 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2215 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=670, Invalid=39932, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:49:01,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:49:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 08:49:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:49:02,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-07-25 08:49:02,328 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-07-25 08:49:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:02,328 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-07-25 08:49:02,328 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:49:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-07-25 08:49:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:49:02,329 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:02,329 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 66, 65, 1, 1, 1, 1] [2018-07-25 08:49:02,329 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:02,329 INFO L82 PathProgramCache]: Analyzing trace with hash 606681465, now seen corresponding path program 130 times [2018-07-25 08:49:02,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8712 backedges. 4290 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:02,543 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:02,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:49:02,543 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:49:02,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:49:02,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2349, Invalid=2481, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:49:02,544 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 70 states. [2018-07-25 08:49:03,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:03,119 INFO L93 Difference]: Finished difference Result 273 states and 274 transitions. [2018-07-25 08:49:03,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:49:03,119 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 268 [2018-07-25 08:49:03,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:03,120 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:49:03,120 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:49:03,121 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4355 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6969, Invalid=11391, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:49:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:49:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 08:49:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:49:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-25 08:49:03,481 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 268 [2018-07-25 08:49:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:03,481 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-25 08:49:03,481 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:49:03,481 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-25 08:49:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:49:03,482 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:03,482 INFO L354 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-07-25 08:49:03,482 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:03,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1094612045, now seen corresponding path program 131 times [2018-07-25 08:49:03,482 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 8844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:04,437 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:04,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:49:04,438 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:49:04,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:49:04,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=18091, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:49:04,439 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 136 states. [2018-07-25 08:49:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:07,935 INFO L93 Difference]: Finished difference Result 409 states and 411 transitions. [2018-07-25 08:49:07,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:49:07,935 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 08:49:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:07,935 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:49:07,935 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:49:07,937 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=680, Invalid=41140, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:49:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:49:08,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:49:08,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:49:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-25 08:49:08,285 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-07-25 08:49:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:08,285 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-25 08:49:08,285 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:49:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-25 08:49:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:49:08,286 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:08,286 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 67, 66, 1, 1, 1, 1] [2018-07-25 08:49:08,286 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:08,286 INFO L82 PathProgramCache]: Analyzing trace with hash 135913709, now seen corresponding path program 132 times [2018-07-25 08:49:08,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8978 backedges. 4422 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:08,574 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:08,574 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:49:08,574 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:49:08,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:49:08,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2418, Invalid=2552, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:49:08,575 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 71 states. [2018-07-25 08:49:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:09,129 INFO L93 Difference]: Finished difference Result 277 states and 278 transitions. [2018-07-25 08:49:09,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:49:09,129 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 272 [2018-07-25 08:49:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:09,130 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:49:09,130 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:49:09,131 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4488 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7175, Invalid=11731, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:49:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:49:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-25 08:49:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:49:09,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-25 08:49:09,494 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-07-25 08:49:09,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:09,494 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-25 08:49:09,494 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:49:09,494 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-25 08:49:09,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:49:09,495 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:09,495 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-07-25 08:49:09,495 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:09,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1764107815, now seen corresponding path program 133 times [2018-07-25 08:49:09,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 9112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:10,477 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:10,477 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:49:10,477 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:49:10,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:49:10,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=18633, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:49:10,478 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 138 states. [2018-07-25 08:49:14,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:14,144 INFO L93 Difference]: Finished difference Result 415 states and 417 transitions. [2018-07-25 08:49:14,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:49:14,144 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 08:49:14,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:14,145 INFO L225 Difference]: With dead ends: 415 [2018-07-25 08:49:14,145 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:49:14,147 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2350 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=690, Invalid=42366, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:49:14,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:49:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:49:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:49:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-25 08:49:14,534 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-07-25 08:49:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:14,534 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-25 08:49:14,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:49:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-25 08:49:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:49:14,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:14,535 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 68, 67, 1, 1, 1, 1] [2018-07-25 08:49:14,535 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:14,535 INFO L82 PathProgramCache]: Analyzing trace with hash -142782879, now seen corresponding path program 134 times [2018-07-25 08:49:14,535 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9248 backedges. 4556 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:14,791 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:14,791 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:49:14,791 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:49:14,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:49:14,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2488, Invalid=2624, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:49:14,792 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 72 states. [2018-07-25 08:49:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:15,477 INFO L93 Difference]: Finished difference Result 281 states and 282 transitions. [2018-07-25 08:49:15,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:49:15,477 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 276 [2018-07-25 08:49:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:15,478 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:49:15,478 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:49:15,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7384, Invalid=12076, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:49:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:49:15,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-25 08:49:15,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:49:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-25 08:49:15,848 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-07-25 08:49:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:15,848 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-25 08:49:15,848 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:49:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-25 08:49:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:49:15,849 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:15,849 INFO L354 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-07-25 08:49:15,850 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:15,850 INFO L82 PathProgramCache]: Analyzing trace with hash 224659099, now seen corresponding path program 135 times [2018-07-25 08:49:15,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 9384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:17,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:17,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:49:17,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:49:17,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:49:17,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=19183, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:49:17,091 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 140 states. [2018-07-25 08:49:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:20,907 INFO L93 Difference]: Finished difference Result 421 states and 423 transitions. [2018-07-25 08:49:20,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:49:20,907 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 08:49:20,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:20,907 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:49:20,907 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:49:20,909 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2419 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=700, Invalid=43610, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:49:20,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:49:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 08:49:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:49:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2018-07-25 08:49:21,289 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 278 [2018-07-25 08:49:21,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:21,289 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2018-07-25 08:49:21,289 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:49:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2018-07-25 08:49:21,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:49:21,290 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:21,290 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 69, 68, 1, 1, 1, 1] [2018-07-25 08:49:21,290 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:21,290 INFO L82 PathProgramCache]: Analyzing trace with hash -820477483, now seen corresponding path program 136 times [2018-07-25 08:49:21,290 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9522 backedges. 4692 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:21,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:21,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:49:21,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:49:21,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:49:21,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2559, Invalid=2697, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:49:21,536 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 73 states. [2018-07-25 08:49:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:22,196 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2018-07-25 08:49:22,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:49:22,196 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 280 [2018-07-25 08:49:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:22,197 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:49:22,197 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:49:22,198 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4760 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7596, Invalid=12426, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:49:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:49:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 08:49:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:49:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 08:49:22,679 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 280 [2018-07-25 08:49:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:22,680 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 08:49:22,680 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:49:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 08:49:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:49:22,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:22,680 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-07-25 08:49:22,681 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:22,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1795173647, now seen corresponding path program 137 times [2018-07-25 08:49:22,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 9660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:23,795 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:23,795 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:49:23,796 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:49:23,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:49:23,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=19741, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:49:23,797 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 142 states. [2018-07-25 08:49:27,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:27,559 INFO L93 Difference]: Finished difference Result 427 states and 429 transitions. [2018-07-25 08:49:27,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:49:27,559 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 08:49:27,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:27,560 INFO L225 Difference]: With dead ends: 427 [2018-07-25 08:49:27,560 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 08:49:27,562 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2489 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=710, Invalid=44872, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:49:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 08:49:27,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 08:49:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:49:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-25 08:49:27,958 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-25 08:49:27,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:27,958 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-25 08:49:27,958 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:49:27,958 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-25 08:49:27,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:49:27,959 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:27,959 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 70, 69, 1, 1, 1, 1] [2018-07-25 08:49:27,959 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:27,959 INFO L82 PathProgramCache]: Analyzing trace with hash -80708791, now seen corresponding path program 138 times [2018-07-25 08:49:27,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9800 backedges. 4830 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:28,204 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:28,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:49:28,204 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:49:28,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:49:28,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2631, Invalid=2771, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:49:28,205 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 74 states. [2018-07-25 08:49:28,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:28,851 INFO L93 Difference]: Finished difference Result 289 states and 290 transitions. [2018-07-25 08:49:28,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:49:28,851 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 284 [2018-07-25 08:49:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:28,852 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:49:28,852 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:49:28,854 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4899 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7811, Invalid=12781, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:49:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:49:29,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-25 08:49:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:49:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-07-25 08:49:29,282 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 284 [2018-07-25 08:49:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:29,282 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-07-25 08:49:29,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:49:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-07-25 08:49:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:49:29,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:29,283 INFO L354 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1] [2018-07-25 08:49:29,283 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:29,283 INFO L82 PathProgramCache]: Analyzing trace with hash -251684477, now seen corresponding path program 139 times [2018-07-25 08:49:29,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 9940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:30,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:30,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:49:30,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:49:30,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:49:30,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=20307, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:49:30,417 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 144 states. [2018-07-25 08:49:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:34,491 INFO L93 Difference]: Finished difference Result 433 states and 435 transitions. [2018-07-25 08:49:34,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:49:34,491 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 08:49:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:34,492 INFO L225 Difference]: With dead ends: 433 [2018-07-25 08:49:34,492 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:49:34,494 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2560 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=720, Invalid=46152, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:49:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:49:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:49:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:49:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-25 08:49:34,909 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 286 [2018-07-25 08:49:34,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:34,909 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-25 08:49:34,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:49:34,909 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-25 08:49:34,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:49:34,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:34,910 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 71, 70, 1, 1, 1, 1] [2018-07-25 08:49:34,910 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:34,910 INFO L82 PathProgramCache]: Analyzing trace with hash 931805885, now seen corresponding path program 140 times [2018-07-25 08:49:34,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10082 backedges. 4970 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:35,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:35,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:49:35,184 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:49:35,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:49:35,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2704, Invalid=2846, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:49:35,185 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 75 states. [2018-07-25 08:49:35,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:35,857 INFO L93 Difference]: Finished difference Result 293 states and 294 transitions. [2018-07-25 08:49:35,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:49:35,857 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 288 [2018-07-25 08:49:35,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:35,858 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:49:35,858 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:49:35,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5040 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8029, Invalid=13141, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:49:35,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:49:36,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-25 08:49:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:49:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 08:49:36,308 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-25 08:49:36,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:36,309 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 08:49:36,309 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:49:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 08:49:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:49:36,310 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:36,310 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-07-25 08:49:36,310 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:36,310 INFO L82 PathProgramCache]: Analyzing trace with hash 2112310263, now seen corresponding path program 141 times [2018-07-25 08:49:36,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 10224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:37,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:37,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:49:37,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:49:37,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:49:37,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=20881, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:49:37,522 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 146 states. [2018-07-25 08:49:41,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:41,930 INFO L93 Difference]: Finished difference Result 439 states and 441 transitions. [2018-07-25 08:49:41,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:49:41,930 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 08:49:41,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:41,931 INFO L225 Difference]: With dead ends: 439 [2018-07-25 08:49:41,931 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:49:41,935 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=730, Invalid=47450, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:49:41,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:49:42,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 08:49:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:49:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2018-07-25 08:49:42,469 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2018-07-25 08:49:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:42,469 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2018-07-25 08:49:42,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:49:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2018-07-25 08:49:42,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:49:42,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:42,470 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 72, 71, 1, 1, 1, 1] [2018-07-25 08:49:42,470 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:42,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1332396081, now seen corresponding path program 142 times [2018-07-25 08:49:42,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 10368 backedges. 5112 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:42,789 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:42,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:49:42,789 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:49:42,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:49:42,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2778, Invalid=2922, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:49:42,790 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand 76 states. [2018-07-25 08:49:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:43,463 INFO L93 Difference]: Finished difference Result 297 states and 298 transitions. [2018-07-25 08:49:43,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:49:43,463 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 292 [2018-07-25 08:49:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:43,464 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:49:43,464 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:49:43,465 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8250, Invalid=13506, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:49:43,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:49:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 08:49:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:49:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-25 08:49:43,886 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 292 [2018-07-25 08:49:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:43,886 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-25 08:49:43,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:49:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-25 08:49:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:49:43,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:43,888 INFO L354 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1] [2018-07-25 08:49:43,888 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:43,888 INFO L82 PathProgramCache]: Analyzing trace with hash 532431979, now seen corresponding path program 143 times [2018-07-25 08:49:43,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 10512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:45,035 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:45,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:49:45,036 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:49:45,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:49:45,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=21463, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:49:45,037 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 148 states. [2018-07-25 08:49:49,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:49,264 INFO L93 Difference]: Finished difference Result 445 states and 447 transitions. [2018-07-25 08:49:49,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:49:49,265 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 08:49:49,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:49,265 INFO L225 Difference]: With dead ends: 445 [2018-07-25 08:49:49,265 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 08:49:49,268 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2705 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=740, Invalid=48766, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:49:49,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 08:49:49,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 08:49:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:49:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-25 08:49:49,721 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 294 [2018-07-25 08:49:49,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:49,721 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-25 08:49:49,722 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:49:49,722 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-25 08:49:49,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:49:49,722 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:49,722 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 73, 72, 1, 1, 1, 1] [2018-07-25 08:49:49,723 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:49,723 INFO L82 PathProgramCache]: Analyzing trace with hash -577303643, now seen corresponding path program 144 times [2018-07-25 08:49:49,723 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10658 backedges. 5256 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:50,007 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:50,007 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:49:50,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:49:50,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:49:50,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2853, Invalid=2999, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:49:50,009 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 77 states. [2018-07-25 08:49:50,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:50,727 INFO L93 Difference]: Finished difference Result 301 states and 302 transitions. [2018-07-25 08:49:50,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:49:50,727 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 296 [2018-07-25 08:49:50,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:50,728 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:49:50,728 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:49:50,729 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5328 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8474, Invalid=13876, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:49:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:49:51,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-25 08:49:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:49:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-25 08:49:51,168 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2018-07-25 08:49:51,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:51,168 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-25 08:49:51,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:49:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-25 08:49:51,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:49:51,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:51,170 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-07-25 08:49:51,170 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:51,170 INFO L82 PathProgramCache]: Analyzing trace with hash -737967393, now seen corresponding path program 145 times [2018-07-25 08:49:51,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 10804 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:52,437 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:52,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:49:52,438 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:49:52,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:49:52,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=22053, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:49:52,439 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 150 states. [2018-07-25 08:49:56,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:56,736 INFO L93 Difference]: Finished difference Result 451 states and 453 transitions. [2018-07-25 08:49:56,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:49:56,737 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 08:49:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:56,737 INFO L225 Difference]: With dead ends: 451 [2018-07-25 08:49:56,737 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:49:56,739 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2779 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=750, Invalid=50100, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:49:56,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:49:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:49:57,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:49:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-25 08:49:57,221 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 298 [2018-07-25 08:49:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:57,222 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-25 08:49:57,222 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:49:57,222 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-25 08:49:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:49:57,222 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:57,223 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 74, 73, 1, 1, 1, 1] [2018-07-25 08:49:57,223 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:57,223 INFO L82 PathProgramCache]: Analyzing trace with hash 206839065, now seen corresponding path program 146 times [2018-07-25 08:49:57,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10952 backedges. 5402 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:57,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:57,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:49:57,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:49:57,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:49:57,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2929, Invalid=3077, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:49:57,531 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 78 states. [2018-07-25 08:49:58,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:58,313 INFO L93 Difference]: Finished difference Result 305 states and 306 transitions. [2018-07-25 08:49:58,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:49:58,313 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 300 [2018-07-25 08:49:58,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:58,314 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:49:58,314 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:49:58,316 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5475 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8701, Invalid=14251, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:49:58,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:49:58,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-25 08:49:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:49:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-25 08:49:58,778 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 300 [2018-07-25 08:49:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:58,778 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-25 08:49:58,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:49:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-25 08:49:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:49:58,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:58,779 INFO L354 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1] [2018-07-25 08:49:58,779 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:58,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1203898195, now seen corresponding path program 147 times [2018-07-25 08:49:58,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 11100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:00,076 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:00,076 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:50:00,077 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:50:00,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:50:00,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=22651, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:50:00,079 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 152 states. [2018-07-25 08:50:04,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:04,562 INFO L93 Difference]: Finished difference Result 457 states and 459 transitions. [2018-07-25 08:50:04,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:50:04,562 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 08:50:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:04,563 INFO L225 Difference]: With dead ends: 457 [2018-07-25 08:50:04,563 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:50:04,565 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2854 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=760, Invalid=51452, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:50:04,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:50:05,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 08:50:05,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:50:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-07-25 08:50:05,039 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 302 [2018-07-25 08:50:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:05,040 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-07-25 08:50:05,040 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:50:05,040 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-07-25 08:50:05,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:50:05,040 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:05,041 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 75, 74, 1, 1, 1, 1] [2018-07-25 08:50:05,041 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:05,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1432810637, now seen corresponding path program 148 times [2018-07-25 08:50:05,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 5550 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:05,388 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:05,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:50:05,389 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:50:05,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:50:05,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3006, Invalid=3156, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:50:05,390 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 79 states. [2018-07-25 08:50:06,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:06,128 INFO L93 Difference]: Finished difference Result 309 states and 310 transitions. [2018-07-25 08:50:06,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:50:06,128 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 304 [2018-07-25 08:50:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:06,129 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:50:06,129 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:50:06,130 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5624 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8931, Invalid=14631, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:50:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:50:06,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 08:50:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:50:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 08:50:06,595 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 304 [2018-07-25 08:50:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:06,595 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 08:50:06,595 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:50:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 08:50:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:50:06,596 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:06,596 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-07-25 08:50:06,596 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:06,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1753427513, now seen corresponding path program 149 times [2018-07-25 08:50:06,597 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 11400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:07,879 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:07,879 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:50:07,880 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:50:07,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:50:07,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=23257, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:50:07,882 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 154 states. [2018-07-25 08:50:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:12,546 INFO L93 Difference]: Finished difference Result 463 states and 465 transitions. [2018-07-25 08:50:12,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:50:12,546 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 08:50:12,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:12,546 INFO L225 Difference]: With dead ends: 463 [2018-07-25 08:50:12,546 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 08:50:12,549 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2930 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=770, Invalid=52822, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:50:12,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 08:50:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 08:50:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:50:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-25 08:50:13,039 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-25 08:50:13,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:13,039 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-25 08:50:13,039 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:50:13,039 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-25 08:50:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:50:13,040 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:13,040 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 76, 75, 1, 1, 1, 1] [2018-07-25 08:50:13,040 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:13,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1108644353, now seen corresponding path program 150 times [2018-07-25 08:50:13,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 11552 backedges. 5700 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:13,330 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:13,330 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:50:13,330 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:50:13,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:50:13,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3084, Invalid=3236, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:50:13,331 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 80 states. [2018-07-25 08:50:14,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:14,109 INFO L93 Difference]: Finished difference Result 313 states and 314 transitions. [2018-07-25 08:50:14,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:50:14,109 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 308 [2018-07-25 08:50:14,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:14,110 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:50:14,110 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:50:14,112 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5775 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9164, Invalid=15016, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:50:14,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:50:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-25 08:50:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:50:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-07-25 08:50:14,695 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 308 [2018-07-25 08:50:14,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:14,695 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-07-25 08:50:14,695 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:50:14,695 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-07-25 08:50:14,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:50:14,696 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:14,696 INFO L354 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1] [2018-07-25 08:50:14,696 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:14,696 INFO L82 PathProgramCache]: Analyzing trace with hash 255386171, now seen corresponding path program 151 times [2018-07-25 08:50:14,697 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 11704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:15,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:15,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:50:15,984 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:50:15,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:50:15,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=23871, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:50:15,986 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 156 states. [2018-07-25 08:50:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:20,644 INFO L93 Difference]: Finished difference Result 469 states and 471 transitions. [2018-07-25 08:50:20,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:50:20,644 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 08:50:20,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:20,645 INFO L225 Difference]: With dead ends: 469 [2018-07-25 08:50:20,645 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:50:20,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3007 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=780, Invalid=54210, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:50:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:50:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:50:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:50:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-25 08:50:21,137 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 310 [2018-07-25 08:50:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:21,137 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-25 08:50:21,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:50:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-25 08:50:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:50:21,138 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:21,138 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 77, 76, 1, 1, 1, 1] [2018-07-25 08:50:21,138 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash 723645813, now seen corresponding path program 152 times [2018-07-25 08:50:21,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11858 backedges. 5852 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:21,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:21,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:50:21,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:50:21,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:50:21,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3163, Invalid=3317, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:50:21,451 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 81 states. [2018-07-25 08:50:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:22,271 INFO L93 Difference]: Finished difference Result 317 states and 318 transitions. [2018-07-25 08:50:22,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:50:22,272 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 312 [2018-07-25 08:50:22,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:22,272 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:50:22,272 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:50:22,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5928 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9400, Invalid=15406, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:50:22,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:50:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-25 08:50:22,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:50:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 08:50:22,771 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-25 08:50:22,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:22,771 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 08:50:22,772 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:50:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 08:50:22,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:50:22,773 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:22,773 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-07-25 08:50:22,773 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:22,773 INFO L82 PathProgramCache]: Analyzing trace with hash -361023313, now seen corresponding path program 153 times [2018-07-25 08:50:22,773 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 12012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:24,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:24,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:50:24,153 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:50:24,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:50:24,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=24493, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:50:24,155 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 158 states. [2018-07-25 08:50:28,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:28,947 INFO L93 Difference]: Finished difference Result 475 states and 477 transitions. [2018-07-25 08:50:28,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:50:28,947 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 08:50:28,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:28,948 INFO L225 Difference]: With dead ends: 475 [2018-07-25 08:50:28,948 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:50:28,950 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3085 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=790, Invalid=55616, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:50:28,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. Received shutdown request... [2018-07-25 08:50:29,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 08:50:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:50:29,443 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:50:29,448 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:50:29,448 INFO L202 PluginConnector]: Adding new model invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:50:29 BoogieIcfgContainer [2018-07-25 08:50:29,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:50:29,449 INFO L168 Benchmark]: Toolchain (without parser) took 246302.07 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -965.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-25 08:50:29,451 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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 08:50:29,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.89 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 08:50:29,452 INFO L168 Benchmark]: Boogie Preprocessor took 27.71 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 08:50:29,452 INFO L168 Benchmark]: RCFGBuilder took 294.00 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 08:50:29,452 INFO L168 Benchmark]: TraceAbstraction took 245931.10 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -975.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-25 08:50:29,455 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 0.20 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 44.89 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 27.71 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 294.00 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 245931.10 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -975.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 80). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 245.8s OverallTime, 155 OverallIterations, 78 TraceHistogramMax, 162.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9630 SDtfs, 4233 SDslu, 649628 SDs, 0 SdLazy, 671506 SolverSat, 5976 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18633 GetRequests, 3081 SyntacticMatches, 0 SemanticMatches, 15552 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237526 ImplicationChecksByTransitivity, 85.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=315occurred in iteration=154, 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: 29.6s AutomataMinimizationTime, 155 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 42.4s InterpolantComputationTime, 24800 NumberOfCodeBlocks, 24800 NumberOfCodeBlocksAsserted, 155 NumberOfCheckSat, 24645 ConstructedInterpolants, 0 QuantifiedInterpolants, 23675537 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 155 InterpolantComputations, 1 PerfectInterpolantSequences, 152152/626626 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/invert_string.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-50-29-465.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/invert_string.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-50-29-465.csv Completed graceful shutdown