java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/const1.i_3.bplTransformedIcfg_BEv2_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:15:47,077 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:15:47,079 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:15:47,091 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:15:47,092 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:15:47,093 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:15:47,094 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:15:47,096 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:15:47,098 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:15:47,099 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:15:47,099 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-23 15:15:47,128 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 15:15:47,151 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:15:47,151 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:15:47,154 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:15:47,154 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:15:47,155 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:15:47,155 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:15:47,155 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:15:47,155 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:15:47,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:15:47,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:15:47,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:15:47,232 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:15:47,233 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:15:47,234 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/const1.i_3.bplTransformedIcfg_BEv2_6.bpl [2018-07-23 15:15:47,234 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/const1.i_3.bplTransformedIcfg_BEv2_6.bpl' [2018-07-23 15:15:47,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:15:47,292 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:15:47,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:15:47,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:15:47,293 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:15:47,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:47" (1/1) ... [2018-07-23 15:15:47,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:47" (1/1) ... [2018-07-23 15:15:47,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:47" (1/1) ... [2018-07-23 15:15:47,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:47" (1/1) ... [2018-07-23 15:15:47,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:47" (1/1) ... [2018-07-23 15:15:47,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:47" (1/1) ... [2018-07-23 15:15:47,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:47" (1/1) ... [2018-07-23 15:15:47,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:15:47,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:15:47,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:15:47,345 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:15:47,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:47" (1/1) ... [2018-07-23 15:15:47,431 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-23 15:15:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 15:15:47,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 15:15:47,564 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 15:15:47,564 INFO L202 PluginConnector]: Adding new model const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:15:47 BoogieIcfgContainer [2018-07-23 15:15:47,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:15:47,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:15:47,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:15:47,571 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:15:47,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:47" (1/2) ... [2018-07-23 15:15:47,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e604b94 and model type const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:15:47, skipping insertion in model container [2018-07-23 15:15:47,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:15:47" (2/2) ... [2018-07-23 15:15:47,578 INFO L112 eAbstractionObserver]: Analyzing ICFG const1.i_3.bplTransformedIcfg_BEv2_6.bpl [2018-07-23 15:15:47,587 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:15:47,596 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 15:15:47,636 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:15:47,637 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:15:47,637 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:15:47,637 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:15:47,637 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:15:47,637 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:15:47,637 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:15:47,638 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:15:47,638 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:15:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-23 15:15:47,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-23 15:15:47,657 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:47,658 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-23 15:15:47,659 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:47,665 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-07-23 15:15:47,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:47,735 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:47,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 15:15:47,740 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 15:15:47,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 15:15:47,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:15:47,756 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-23 15:15:47,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:47,778 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2018-07-23 15:15:47,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 15:15:47,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-23 15:15:47,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:47,790 INFO L225 Difference]: With dead ends: 8 [2018-07-23 15:15:47,791 INFO L226 Difference]: Without dead ends: 5 [2018-07-23 15:15:47,798 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:15:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-23 15:15:47,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-23 15:15:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-23 15:15:47,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-23 15:15:47,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-23 15:15:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:47,834 INFO L471 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-23 15:15:47,834 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 15:15:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-23 15:15:47,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:15:47,835 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:47,835 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:15:47,836 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:47,836 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-07-23 15:15:47,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:47,866 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:47,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 15:15:47,868 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:15:47,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:15:47,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:15:47,869 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-23 15:15:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:47,887 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-23 15:15:47,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:15:47,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 15:15:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:47,888 INFO L225 Difference]: With dead ends: 8 [2018-07-23 15:15:47,888 INFO L226 Difference]: Without dead ends: 6 [2018-07-23 15:15:47,889 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:15:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-23 15:15:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-23 15:15:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-23 15:15:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-23 15:15:47,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-23 15:15:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:47,897 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-23 15:15:47,897 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:15:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-23 15:15:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 15:15:47,899 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:47,899 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-23 15:15:47,899 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:47,899 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-07-23 15:15:47,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:47,948 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:47,949 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:15:47,949 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:15:47,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:15:47,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:15:47,950 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-07-23 15:15:47,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:47,968 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 15:15:47,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:15:47,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-07-23 15:15:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:47,969 INFO L225 Difference]: With dead ends: 9 [2018-07-23 15:15:47,969 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 15:15:47,970 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:15:47,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 15:15:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 15:15:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 15:15:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 15:15:47,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-07-23 15:15:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:47,973 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 15:15:47,973 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:15:47,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 15:15:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:15:47,974 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:47,974 INFO L353 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-07-23 15:15:47,974 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:47,975 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-07-23 15:15:47,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:48,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:15:48,009 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:15:48,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:15:48,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:15:48,011 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-23 15:15:48,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,032 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-07-23 15:15:48,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:15:48,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-23 15:15:48,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,033 INFO L225 Difference]: With dead ends: 10 [2018-07-23 15:15:48,033 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 15:15:48,034 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:15:48,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 15:15:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-23 15:15:48,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-23 15:15:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-23 15:15:48,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-07-23 15:15:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,038 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-23 15:15:48,038 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:15:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-23 15:15:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:48,038 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,039 INFO L353 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-07-23 15:15:48,039 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:48,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-07-23 15:15:48,039 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:48,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:48,091 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:48,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:48,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:48,094 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-07-23 15:15:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,119 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-23 15:15:48,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:15:48,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-23 15:15:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,120 INFO L225 Difference]: With dead ends: 11 [2018-07-23 15:15:48,121 INFO L226 Difference]: Without dead ends: 9 [2018-07-23 15:15:48,121 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-23 15:15:48,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-23 15:15:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 15:15:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-23 15:15:48,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-07-23 15:15:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,125 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-23 15:15:48,125 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-23 15:15:48,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:15:48,126 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,126 INFO L353 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-07-23 15:15:48,126 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:48,126 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-07-23 15:15:48,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:48,168 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,169 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:48,169 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:48,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:48,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:48,170 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-07-23 15:15:48,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,189 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-23 15:15:48,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 15:15:48,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:15:48,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,192 INFO L225 Difference]: With dead ends: 12 [2018-07-23 15:15:48,192 INFO L226 Difference]: Without dead ends: 10 [2018-07-23 15:15:48,195 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-23 15:15:48,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-23 15:15:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-23 15:15:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-23 15:15:48,200 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-07-23 15:15:48,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,201 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-23 15:15:48,201 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-23 15:15:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-23 15:15:48,202 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,202 INFO L353 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-07-23 15:15:48,202 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:48,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-07-23 15:15:48,205 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:48,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:15:48,293 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:48,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:48,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:48,294 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-07-23 15:15:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,311 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-23 15:15:48,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:15:48,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-07-23 15:15:48,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,312 INFO L225 Difference]: With dead ends: 13 [2018-07-23 15:15:48,312 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 15:15:48,312 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:48,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 15:15:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 15:15:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 15:15:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-23 15:15:48,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-07-23 15:15:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,316 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-23 15:15:48,317 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-23 15:15:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:15:48,317 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,317 INFO L353 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-07-23 15:15:48,318 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:48,318 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-07-23 15:15:48,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:48,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:15:48,372 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:15:48,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:15:48,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:15:48,380 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-07-23 15:15:48,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,410 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-23 15:15:48,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:15:48,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-07-23 15:15:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,411 INFO L225 Difference]: With dead ends: 14 [2018-07-23 15:15:48,413 INFO L226 Difference]: Without dead ends: 12 [2018-07-23 15:15:48,414 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:15:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-23 15:15:48,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-23 15:15:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-23 15:15:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-23 15:15:48,420 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-07-23 15:15:48,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,421 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-23 15:15:48,421 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:15:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-23 15:15:48,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-23 15:15:48,422 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,422 INFO L353 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-07-23 15:15:48,422 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:48,422 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-07-23 15:15:48,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:48,471 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:15:48,476 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:15:48,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:15:48,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:15:48,477 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-07-23 15:15:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,501 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-23 15:15:48,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:48,502 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-07-23 15:15:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,502 INFO L225 Difference]: With dead ends: 15 [2018-07-23 15:15:48,502 INFO L226 Difference]: Without dead ends: 13 [2018-07-23 15:15:48,503 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:15:48,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-23 15:15:48,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-23 15:15:48,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-23 15:15:48,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-23 15:15:48,507 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-07-23 15:15:48,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,507 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-23 15:15:48,507 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:15:48,507 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-23 15:15:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:48,508 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,508 INFO L353 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-07-23 15:15:48,508 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:48,509 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-07-23 15:15:48,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:48,577 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,577 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:15:48,578 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:15:48,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:15:48,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:15:48,579 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-07-23 15:15:48,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,607 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-23 15:15:48,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:15:48,614 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-07-23 15:15:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,615 INFO L225 Difference]: With dead ends: 16 [2018-07-23 15:15:48,615 INFO L226 Difference]: Without dead ends: 14 [2018-07-23 15:15:48,615 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:15:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-23 15:15:48,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-23 15:15:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-23 15:15:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-23 15:15:48,621 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-07-23 15:15:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,624 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-23 15:15:48,624 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:15:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-23 15:15:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-23 15:15:48,625 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,625 INFO L353 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-07-23 15:15:48,625 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:48,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-07-23 15:15:48,625 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:48,718 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:15:48,723 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:15:48,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:15:48,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:15:48,725 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-07-23 15:15:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,743 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-23 15:15:48,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:48,743 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-07-23 15:15:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,744 INFO L225 Difference]: With dead ends: 17 [2018-07-23 15:15:48,744 INFO L226 Difference]: Without dead ends: 15 [2018-07-23 15:15:48,745 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:15:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-23 15:15:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-23 15:15:48,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-23 15:15:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-23 15:15:48,749 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-07-23 15:15:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,749 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-23 15:15:48,749 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:15:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-23 15:15:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:48,750 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,750 INFO L353 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-07-23 15:15:48,751 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:48,751 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-07-23 15:15:48,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:48,816 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,816 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-23 15:15:48,816 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-23 15:15:48,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-23 15:15:48,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:15:48,817 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-07-23 15:15:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,848 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-23 15:15:48,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:15:48,848 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-07-23 15:15:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,849 INFO L225 Difference]: With dead ends: 18 [2018-07-23 15:15:48,849 INFO L226 Difference]: Without dead ends: 16 [2018-07-23 15:15:48,853 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:15:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-23 15:15:48,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-23 15:15:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-23 15:15:48,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-23 15:15:48,859 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-07-23 15:15:48,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,859 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-23 15:15:48,859 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-23 15:15:48,859 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-23 15:15:48,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-23 15:15:48,860 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,861 INFO L353 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-07-23 15:15:48,861 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:48,861 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-07-23 15:15:48,861 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:48,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-23 15:15:48,914 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-23 15:15:48,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-23 15:15:48,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:48,915 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-07-23 15:15:48,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,931 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-23 15:15:48,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:48,931 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-07-23 15:15:48,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,932 INFO L225 Difference]: With dead ends: 19 [2018-07-23 15:15:48,932 INFO L226 Difference]: Without dead ends: 17 [2018-07-23 15:15:48,933 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:48,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-23 15:15:48,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-23 15:15:48,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-23 15:15:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-23 15:15:48,937 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-07-23 15:15:48,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,938 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-23 15:15:48,938 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-23 15:15:48,938 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-23 15:15:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:15:48,939 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,939 INFO L353 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-07-23 15:15:48,939 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:48,939 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-07-23 15:15:48,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,020 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:49,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-23 15:15:49,020 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-23 15:15:49,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-23 15:15:49,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:49,022 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-07-23 15:15:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:49,049 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-07-23 15:15:49,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:49,049 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-07-23 15:15:49,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:49,050 INFO L225 Difference]: With dead ends: 20 [2018-07-23 15:15:49,055 INFO L226 Difference]: Without dead ends: 18 [2018-07-23 15:15:49,056 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-23 15:15:49,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-23 15:15:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-23 15:15:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-23 15:15:49,063 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-07-23 15:15:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,063 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-23 15:15:49,063 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-23 15:15:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-23 15:15:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-23 15:15:49,064 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,064 INFO L353 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-07-23 15:15:49,065 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:49,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-07-23 15:15:49,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:49,133 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-23 15:15:49,133 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:15:49,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:15:49,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:49,134 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-07-23 15:15:49,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:49,156 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-23 15:15:49,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:15:49,156 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-07-23 15:15:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:49,157 INFO L225 Difference]: With dead ends: 21 [2018-07-23 15:15:49,157 INFO L226 Difference]: Without dead ends: 19 [2018-07-23 15:15:49,158 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-23 15:15:49,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-23 15:15:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-23 15:15:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-23 15:15:49,166 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-07-23 15:15:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,167 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-23 15:15:49,167 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:15:49,167 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-23 15:15:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:49,170 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,171 INFO L353 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-07-23 15:15:49,171 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:49,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-07-23 15:15:49,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:49,243 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-23 15:15:49,244 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-23 15:15:49,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-23 15:15:49,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:49,245 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-07-23 15:15:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:49,266 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-23 15:15:49,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:15:49,266 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-07-23 15:15:49,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:49,267 INFO L225 Difference]: With dead ends: 22 [2018-07-23 15:15:49,267 INFO L226 Difference]: Without dead ends: 20 [2018-07-23 15:15:49,268 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:49,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-23 15:15:49,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-23 15:15:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-23 15:15:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-23 15:15:49,276 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-07-23 15:15:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,276 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-23 15:15:49,276 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-23 15:15:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-23 15:15:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-23 15:15:49,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,278 INFO L353 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-07-23 15:15:49,278 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:49,279 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-07-23 15:15:49,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:49,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-23 15:15:49,336 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 15:15:49,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 15:15:49,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:49,337 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-07-23 15:15:49,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:49,349 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-23 15:15:49,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:15:49,350 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-07-23 15:15:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:49,350 INFO L225 Difference]: With dead ends: 23 [2018-07-23 15:15:49,350 INFO L226 Difference]: Without dead ends: 21 [2018-07-23 15:15:49,351 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:49,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-23 15:15:49,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-23 15:15:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-23 15:15:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-23 15:15:49,355 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-07-23 15:15:49,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,355 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-23 15:15:49,355 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 15:15:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-23 15:15:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:15:49,356 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,356 INFO L353 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-07-23 15:15:49,357 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:49,357 INFO L82 PathProgramCache]: Analyzing trace with hash -313538196, now seen corresponding path program 17 times [2018-07-23 15:15:49,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,418 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:49,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-23 15:15:49,419 INFO L450 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-23 15:15:49,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-23 15:15:49,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:15:49,422 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-07-23 15:15:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:49,437 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-07-23 15:15:49,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:15:49,438 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-07-23 15:15:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:49,438 INFO L225 Difference]: With dead ends: 24 [2018-07-23 15:15:49,439 INFO L226 Difference]: Without dead ends: 22 [2018-07-23 15:15:49,439 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:15:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-23 15:15:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-23 15:15:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-23 15:15:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-23 15:15:49,443 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-07-23 15:15:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,444 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-23 15:15:49,444 INFO L472 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-23 15:15:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-23 15:15:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 15:15:49,445 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,445 INFO L353 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-07-23 15:15:49,445 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:49,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1129747677, now seen corresponding path program 18 times [2018-07-23 15:15:49,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:49,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-23 15:15:49,530 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-23 15:15:49,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-23 15:15:49,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:15:49,532 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-07-23 15:15:49,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:49,544 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-23 15:15:49,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:15:49,544 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-07-23 15:15:49,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:49,545 INFO L225 Difference]: With dead ends: 25 [2018-07-23 15:15:49,545 INFO L226 Difference]: Without dead ends: 23 [2018-07-23 15:15:49,546 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:15:49,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-23 15:15:49,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-23 15:15:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-23 15:15:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-23 15:15:49,550 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-07-23 15:15:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,550 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-23 15:15:49,551 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-23 15:15:49,551 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-23 15:15:49,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:15:49,551 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,552 INFO L353 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-07-23 15:15:49,552 INFO L414 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:49,552 INFO L82 PathProgramCache]: Analyzing trace with hash -662437812, now seen corresponding path program 19 times [2018-07-23 15:15:49,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:49,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-23 15:15:49,623 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-23 15:15:49,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-23 15:15:49,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:15:49,624 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-07-23 15:15:49,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:49,639 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-23 15:15:49,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:15:49,640 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-07-23 15:15:49,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:49,641 INFO L225 Difference]: With dead ends: 26 [2018-07-23 15:15:49,641 INFO L226 Difference]: Without dead ends: 24 [2018-07-23 15:15:49,641 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:15:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-23 15:15:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-23 15:15:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-23 15:15:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-23 15:15:49,646 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-07-23 15:15:49,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,647 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-23 15:15:49,647 INFO L472 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-23 15:15:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-23 15:15:49,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-23 15:15:49,648 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,648 INFO L353 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-07-23 15:15:49,648 INFO L414 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:49,650 INFO L82 PathProgramCache]: Analyzing trace with hash 939266115, now seen corresponding path program 20 times [2018-07-23 15:15:49,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,735 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:49,735 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-23 15:15:49,736 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-23 15:15:49,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-23 15:15:49,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:15:49,739 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-07-23 15:15:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:49,765 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-23 15:15:49,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:15:49,765 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-07-23 15:15:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:49,766 INFO L225 Difference]: With dead ends: 27 [2018-07-23 15:15:49,766 INFO L226 Difference]: Without dead ends: 25 [2018-07-23 15:15:49,767 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:15:49,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-23 15:15:49,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-23 15:15:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-23 15:15:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-23 15:15:49,774 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-07-23 15:15:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,775 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-23 15:15:49,775 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-23 15:15:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-23 15:15:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:15:49,776 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,776 INFO L353 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-07-23 15:15:49,776 INFO L414 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:49,776 INFO L82 PathProgramCache]: Analyzing trace with hash -947519700, now seen corresponding path program 21 times [2018-07-23 15:15:49,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,866 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:49,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-23 15:15:49,867 INFO L450 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-23 15:15:49,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-23 15:15:49,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:15:49,868 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-07-23 15:15:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:49,890 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-07-23 15:15:49,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:15:49,891 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-07-23 15:15:49,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:49,895 INFO L225 Difference]: With dead ends: 28 [2018-07-23 15:15:49,895 INFO L226 Difference]: Without dead ends: 26 [2018-07-23 15:15:49,896 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:15:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-23 15:15:49,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-23 15:15:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-23 15:15:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-23 15:15:49,910 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-07-23 15:15:49,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,910 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-23 15:15:49,911 INFO L472 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-23 15:15:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-23 15:15:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:15:49,911 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,912 INFO L353 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-07-23 15:15:49,912 INFO L414 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:49,912 INFO L82 PathProgramCache]: Analyzing trace with hash 691662179, now seen corresponding path program 22 times [2018-07-23 15:15:49,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:50,034 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:50,034 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-23 15:15:50,035 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-23 15:15:50,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-23 15:15:50,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:15:50,037 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-07-23 15:15:50,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:50,064 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-23 15:15:50,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:15:50,064 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-07-23 15:15:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:50,065 INFO L225 Difference]: With dead ends: 29 [2018-07-23 15:15:50,065 INFO L226 Difference]: Without dead ends: 27 [2018-07-23 15:15:50,066 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:15:50,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-23 15:15:50,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-23 15:15:50,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-23 15:15:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-23 15:15:50,073 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-07-23 15:15:50,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:50,074 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-23 15:15:50,074 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-23 15:15:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-23 15:15:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:15:50,076 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:50,077 INFO L353 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-07-23 15:15:50,077 INFO L414 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:50,077 INFO L82 PathProgramCache]: Analyzing trace with hash -33307124, now seen corresponding path program 23 times [2018-07-23 15:15:50,077 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:50,170 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:50,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-23 15:15:50,171 INFO L450 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-23 15:15:50,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-23 15:15:50,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:15:50,172 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-07-23 15:15:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:50,188 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-07-23 15:15:50,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-23 15:15:50,191 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-07-23 15:15:50,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:50,192 INFO L225 Difference]: With dead ends: 30 [2018-07-23 15:15:50,192 INFO L226 Difference]: Without dead ends: 28 [2018-07-23 15:15:50,192 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:15:50,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-23 15:15:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-23 15:15:50,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-23 15:15:50,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-23 15:15:50,199 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-07-23 15:15:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:50,199 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-23 15:15:50,199 INFO L472 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-23 15:15:50,202 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-23 15:15:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-23 15:15:50,203 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:50,203 INFO L353 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-07-23 15:15:50,203 INFO L414 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:50,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1032519037, now seen corresponding path program 24 times [2018-07-23 15:15:50,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:50,311 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:50,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-23 15:15:50,312 INFO L450 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-23 15:15:50,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-23 15:15:50,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:15:50,313 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-07-23 15:15:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:50,334 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-23 15:15:50,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:15:50,334 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-07-23 15:15:50,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:50,335 INFO L225 Difference]: With dead ends: 31 [2018-07-23 15:15:50,335 INFO L226 Difference]: Without dead ends: 29 [2018-07-23 15:15:50,336 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:15:50,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-23 15:15:50,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-23 15:15:50,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-23 15:15:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-23 15:15:50,347 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-07-23 15:15:50,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:50,347 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-23 15:15:50,349 INFO L472 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-23 15:15:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-23 15:15:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 15:15:50,349 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:50,350 INFO L353 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-07-23 15:15:50,350 INFO L414 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:50,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317268, now seen corresponding path program 25 times [2018-07-23 15:15:50,350 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:50,454 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:50,454 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-23 15:15:50,455 INFO L450 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-23 15:15:50,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-23 15:15:50,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:15:50,456 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-07-23 15:15:50,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:50,479 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-07-23 15:15:50,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:15:50,479 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-07-23 15:15:50,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:50,480 INFO L225 Difference]: With dead ends: 32 [2018-07-23 15:15:50,481 INFO L226 Difference]: Without dead ends: 30 [2018-07-23 15:15:50,481 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:15:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-23 15:15:50,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-23 15:15:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-23 15:15:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-23 15:15:50,485 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-07-23 15:15:50,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:50,485 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-23 15:15:50,486 INFO L472 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-23 15:15:50,486 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-23 15:15:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:15:50,486 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:50,487 INFO L353 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-07-23 15:15:50,487 INFO L414 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:50,487 INFO L82 PathProgramCache]: Analyzing trace with hash -113291357, now seen corresponding path program 26 times [2018-07-23 15:15:50,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:50,607 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:50,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-23 15:15:50,607 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-23 15:15:50,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-23 15:15:50,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:15:50,609 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-07-23 15:15:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:50,633 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-23 15:15:50,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:15:50,634 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-07-23 15:15:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:50,634 INFO L225 Difference]: With dead ends: 33 [2018-07-23 15:15:50,634 INFO L226 Difference]: Without dead ends: 31 [2018-07-23 15:15:50,635 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:15:50,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-23 15:15:50,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-23 15:15:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-23 15:15:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-23 15:15:50,639 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-07-23 15:15:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:50,640 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-23 15:15:50,640 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-23 15:15:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-23 15:15:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-23 15:15:50,640 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:50,640 INFO L353 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-07-23 15:15:50,641 INFO L414 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:50,641 INFO L82 PathProgramCache]: Analyzing trace with hash 782937036, now seen corresponding path program 27 times [2018-07-23 15:15:50,641 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:50,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:50,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-23 15:15:50,765 INFO L450 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-23 15:15:50,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-23 15:15:50,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:15:50,766 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-07-23 15:15:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:50,795 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-07-23 15:15:50,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:15:50,795 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-07-23 15:15:50,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:50,796 INFO L225 Difference]: With dead ends: 34 [2018-07-23 15:15:50,796 INFO L226 Difference]: Without dead ends: 32 [2018-07-23 15:15:50,797 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:15:50,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-23 15:15:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-23 15:15:50,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-23 15:15:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-23 15:15:50,806 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-07-23 15:15:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:50,806 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-23 15:15:50,807 INFO L472 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-23 15:15:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-23 15:15:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-23 15:15:50,807 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:50,807 INFO L353 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-07-23 15:15:50,808 INFO L414 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:50,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1498753853, now seen corresponding path program 28 times [2018-07-23 15:15:50,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:50,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:50,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-23 15:15:50,940 INFO L450 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-23 15:15:50,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-23 15:15:50,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:15:50,941 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-07-23 15:15:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:50,961 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-23 15:15:50,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-23 15:15:50,961 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-07-23 15:15:50,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:50,962 INFO L225 Difference]: With dead ends: 35 [2018-07-23 15:15:50,962 INFO L226 Difference]: Without dead ends: 33 [2018-07-23 15:15:50,963 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:15:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-23 15:15:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-23 15:15:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-23 15:15:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-23 15:15:50,967 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-07-23 15:15:50,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:50,967 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-23 15:15:50,967 INFO L472 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-23 15:15:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-23 15:15:50,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-23 15:15:50,968 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:50,968 INFO L353 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-07-23 15:15:50,968 INFO L414 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash 783272620, now seen corresponding path program 29 times [2018-07-23 15:15:50,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:51,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:51,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-23 15:15:51,094 INFO L450 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-23 15:15:51,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-23 15:15:51,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:15:51,095 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-07-23 15:15:51,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:51,114 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-07-23 15:15:51,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-23 15:15:51,114 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-07-23 15:15:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:51,115 INFO L225 Difference]: With dead ends: 36 [2018-07-23 15:15:51,115 INFO L226 Difference]: Without dead ends: 34 [2018-07-23 15:15:51,116 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:15:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-23 15:15:51,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-23 15:15:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-23 15:15:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-23 15:15:51,120 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-07-23 15:15:51,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:51,120 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-23 15:15:51,120 INFO L472 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-23 15:15:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-23 15:15:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-23 15:15:51,121 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:51,121 INFO L353 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-07-23 15:15:51,121 INFO L414 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:51,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1488350749, now seen corresponding path program 30 times [2018-07-23 15:15:51,122 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:51,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:51,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-23 15:15:51,258 INFO L450 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-23 15:15:51,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-23 15:15:51,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:15:51,260 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-07-23 15:15:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:51,278 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-23 15:15:51,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:15:51,279 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-07-23 15:15:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:51,279 INFO L225 Difference]: With dead ends: 37 [2018-07-23 15:15:51,280 INFO L226 Difference]: Without dead ends: 35 [2018-07-23 15:15:51,281 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:15:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-23 15:15:51,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-23 15:15:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-23 15:15:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-23 15:15:51,284 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-07-23 15:15:51,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:51,285 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-23 15:15:51,285 INFO L472 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-23 15:15:51,285 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-23 15:15:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-23 15:15:51,286 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:51,286 INFO L353 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-07-23 15:15:51,286 INFO L414 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1105768844, now seen corresponding path program 31 times [2018-07-23 15:15:51,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:51,433 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:51,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-23 15:15:51,433 INFO L450 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-23 15:15:51,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-23 15:15:51,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:15:51,435 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-07-23 15:15:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:51,452 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-07-23 15:15:51,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-23 15:15:51,453 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-07-23 15:15:51,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:51,453 INFO L225 Difference]: With dead ends: 38 [2018-07-23 15:15:51,453 INFO L226 Difference]: Without dead ends: 36 [2018-07-23 15:15:51,454 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:15:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-23 15:15:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-23 15:15:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-23 15:15:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-23 15:15:51,458 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-07-23 15:15:51,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:51,458 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-23 15:15:51,459 INFO L472 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-23 15:15:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-23 15:15:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-23 15:15:51,459 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:51,459 INFO L353 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-07-23 15:15:51,460 INFO L414 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:51,460 INFO L82 PathProgramCache]: Analyzing trace with hash -80902397, now seen corresponding path program 32 times [2018-07-23 15:15:51,460 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:51,644 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:51,644 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-23 15:15:51,644 INFO L450 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-23 15:15:51,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-23 15:15:51,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:15:51,646 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-07-23 15:15:51,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:51,668 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-23 15:15:51,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-23 15:15:51,668 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-07-23 15:15:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:51,669 INFO L225 Difference]: With dead ends: 39 [2018-07-23 15:15:51,669 INFO L226 Difference]: Without dead ends: 37 [2018-07-23 15:15:51,670 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:15:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-23 15:15:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-23 15:15:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-23 15:15:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-23 15:15:51,673 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-07-23 15:15:51,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:51,673 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-23 15:15:51,673 INFO L472 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-23 15:15:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-23 15:15:51,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-23 15:15:51,674 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:51,674 INFO L353 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-07-23 15:15:51,674 INFO L414 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:51,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1786994796, now seen corresponding path program 33 times [2018-07-23 15:15:51,675 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:51,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:51,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-23 15:15:51,807 INFO L450 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-23 15:15:51,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-23 15:15:51,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:15:51,808 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-07-23 15:15:51,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:51,829 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-07-23 15:15:51,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-23 15:15:51,830 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-07-23 15:15:51,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:51,830 INFO L225 Difference]: With dead ends: 40 [2018-07-23 15:15:51,830 INFO L226 Difference]: Without dead ends: 38 [2018-07-23 15:15:51,831 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:15:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-23 15:15:51,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-23 15:15:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-23 15:15:51,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-23 15:15:51,834 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-07-23 15:15:51,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:51,835 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-23 15:15:51,835 INFO L472 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-23 15:15:51,835 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-23 15:15:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-23 15:15:51,835 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:51,835 INFO L353 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-07-23 15:15:51,836 INFO L414 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:51,836 INFO L82 PathProgramCache]: Analyzing trace with hash -437734365, now seen corresponding path program 34 times [2018-07-23 15:15:51,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:51,976 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:51,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-23 15:15:51,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-23 15:15:51,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-23 15:15:51,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:15:51,977 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-07-23 15:15:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:51,999 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-23 15:15:52,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 15:15:52,000 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-07-23 15:15:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:52,000 INFO L225 Difference]: With dead ends: 41 [2018-07-23 15:15:52,000 INFO L226 Difference]: Without dead ends: 39 [2018-07-23 15:15:52,001 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:15:52,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-23 15:15:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-23 15:15:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-23 15:15:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-23 15:15:52,004 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-07-23 15:15:52,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:52,005 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-23 15:15:52,005 INFO L472 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-23 15:15:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-23 15:15:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-23 15:15:52,005 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:52,005 INFO L353 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-07-23 15:15:52,006 INFO L414 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:52,006 INFO L82 PathProgramCache]: Analyzing trace with hash -684861620, now seen corresponding path program 35 times [2018-07-23 15:15:52,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:52,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:52,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-23 15:15:52,149 INFO L450 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-23 15:15:52,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-23 15:15:52,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:15:52,150 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-07-23 15:15:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:52,173 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-07-23 15:15:52,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-23 15:15:52,173 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-07-23 15:15:52,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:52,174 INFO L225 Difference]: With dead ends: 42 [2018-07-23 15:15:52,174 INFO L226 Difference]: Without dead ends: 40 [2018-07-23 15:15:52,175 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:15:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-23 15:15:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-23 15:15:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-23 15:15:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-23 15:15:52,178 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-07-23 15:15:52,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:52,178 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-23 15:15:52,178 INFO L472 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-23 15:15:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-23 15:15:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-23 15:15:52,178 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:52,179 INFO L353 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-07-23 15:15:52,179 INFO L414 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:52,179 INFO L82 PathProgramCache]: Analyzing trace with hash 244128067, now seen corresponding path program 36 times [2018-07-23 15:15:52,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:52,320 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:52,320 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-23 15:15:52,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-23 15:15:52,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-23 15:15:52,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:15:52,322 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-07-23 15:15:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:52,341 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-23 15:15:52,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:15:52,341 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-07-23 15:15:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:52,341 INFO L225 Difference]: With dead ends: 43 [2018-07-23 15:15:52,342 INFO L226 Difference]: Without dead ends: 41 [2018-07-23 15:15:52,343 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:15:52,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-23 15:15:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-23 15:15:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-23 15:15:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-23 15:15:52,345 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-07-23 15:15:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:52,346 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-23 15:15:52,346 INFO L472 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-23 15:15:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-23 15:15:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-23 15:15:52,346 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:52,346 INFO L353 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-07-23 15:15:52,347 INFO L414 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:52,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1021962708, now seen corresponding path program 37 times [2018-07-23 15:15:52,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:52,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:52,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-23 15:15:52,489 INFO L450 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-23 15:15:52,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-23 15:15:52,490 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:15:52,491 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-07-23 15:15:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:52,511 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-07-23 15:15:52,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-23 15:15:52,512 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-07-23 15:15:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:52,512 INFO L225 Difference]: With dead ends: 44 [2018-07-23 15:15:52,512 INFO L226 Difference]: Without dead ends: 42 [2018-07-23 15:15:52,513 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:15:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-23 15:15:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-23 15:15:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-23 15:15:52,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-23 15:15:52,516 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-07-23 15:15:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:52,516 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-23 15:15:52,516 INFO L472 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-23 15:15:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-23 15:15:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-23 15:15:52,517 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:52,517 INFO L353 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-07-23 15:15:52,520 INFO L414 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:52,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1616071069, now seen corresponding path program 38 times [2018-07-23 15:15:52,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:52,669 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:52,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-23 15:15:52,670 INFO L450 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-23 15:15:52,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-23 15:15:52,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:15:52,671 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-07-23 15:15:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:52,696 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-23 15:15:52,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:15:52,696 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-07-23 15:15:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:52,696 INFO L225 Difference]: With dead ends: 45 [2018-07-23 15:15:52,697 INFO L226 Difference]: Without dead ends: 43 [2018-07-23 15:15:52,698 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:15:52,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-23 15:15:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-23 15:15:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-23 15:15:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-23 15:15:52,706 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-07-23 15:15:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:52,707 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-23 15:15:52,707 INFO L472 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-23 15:15:52,707 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-23 15:15:52,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-23 15:15:52,707 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:52,707 INFO L353 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-07-23 15:15:52,708 INFO L414 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:52,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1441406220, now seen corresponding path program 39 times [2018-07-23 15:15:52,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:52,867 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:52,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-23 15:15:52,868 INFO L450 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-23 15:15:52,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-23 15:15:52,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:15:52,870 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-07-23 15:15:52,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:52,890 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-07-23 15:15:52,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-23 15:15:52,890 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-07-23 15:15:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:52,891 INFO L225 Difference]: With dead ends: 46 [2018-07-23 15:15:52,891 INFO L226 Difference]: Without dead ends: 44 [2018-07-23 15:15:52,892 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:15:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-23 15:15:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-23 15:15:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-23 15:15:52,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-23 15:15:52,894 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-07-23 15:15:52,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:52,895 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-23 15:15:52,895 INFO L472 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-23 15:15:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-23 15:15:52,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-23 15:15:52,895 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:52,896 INFO L353 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-07-23 15:15:52,896 INFO L414 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:52,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1733921667, now seen corresponding path program 40 times [2018-07-23 15:15:52,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:53,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:53,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-23 15:15:53,053 INFO L450 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-23 15:15:53,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-23 15:15:53,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:15:53,055 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-07-23 15:15:53,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:53,079 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-23 15:15:53,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-23 15:15:53,080 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-07-23 15:15:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:53,080 INFO L225 Difference]: With dead ends: 47 [2018-07-23 15:15:53,080 INFO L226 Difference]: Without dead ends: 45 [2018-07-23 15:15:53,081 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:15:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-23 15:15:53,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-23 15:15:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-23 15:15:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-23 15:15:53,084 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-07-23 15:15:53,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:53,084 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-23 15:15:53,084 INFO L472 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-23 15:15:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-23 15:15:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-23 15:15:53,085 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:53,085 INFO L353 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-07-23 15:15:53,085 INFO L414 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:53,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2083001364, now seen corresponding path program 41 times [2018-07-23 15:15:53,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:53,246 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:53,246 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-23 15:15:53,247 INFO L450 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-23 15:15:53,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-23 15:15:53,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:15:53,248 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-07-23 15:15:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:53,266 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-07-23 15:15:53,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-23 15:15:53,267 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-07-23 15:15:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:53,267 INFO L225 Difference]: With dead ends: 48 [2018-07-23 15:15:53,267 INFO L226 Difference]: Without dead ends: 46 [2018-07-23 15:15:53,268 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:15:53,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-23 15:15:53,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-23 15:15:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-23 15:15:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-23 15:15:53,271 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-07-23 15:15:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:53,271 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-23 15:15:53,272 INFO L472 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-23 15:15:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-23 15:15:53,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-23 15:15:53,272 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:53,272 INFO L353 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-07-23 15:15:53,272 INFO L414 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:53,273 INFO L82 PathProgramCache]: Analyzing trace with hash -148531037, now seen corresponding path program 42 times [2018-07-23 15:15:53,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:53,444 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:53,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-23 15:15:53,445 INFO L450 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-23 15:15:53,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-23 15:15:53,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:15:53,447 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-07-23 15:15:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:53,474 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-23 15:15:53,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-23 15:15:53,474 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-07-23 15:15:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:53,475 INFO L225 Difference]: With dead ends: 49 [2018-07-23 15:15:53,475 INFO L226 Difference]: Without dead ends: 47 [2018-07-23 15:15:53,476 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:15:53,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-23 15:15:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-23 15:15:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-23 15:15:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-23 15:15:53,480 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-07-23 15:15:53,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:53,482 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-23 15:15:53,482 INFO L472 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-23 15:15:53,482 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-23 15:15:53,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-23 15:15:53,483 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:53,483 INFO L353 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-07-23 15:15:53,483 INFO L414 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:53,483 INFO L82 PathProgramCache]: Analyzing trace with hash -309493044, now seen corresponding path program 43 times [2018-07-23 15:15:53,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:53,658 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:53,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-23 15:15:53,659 INFO L450 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-23 15:15:53,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-23 15:15:53,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:15:53,661 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-07-23 15:15:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:53,689 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-07-23 15:15:53,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-23 15:15:53,690 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-07-23 15:15:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:53,690 INFO L225 Difference]: With dead ends: 50 [2018-07-23 15:15:53,690 INFO L226 Difference]: Without dead ends: 48 [2018-07-23 15:15:53,693 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:15:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-23 15:15:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-23 15:15:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-23 15:15:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-23 15:15:53,697 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-07-23 15:15:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:53,697 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-23 15:15:53,697 INFO L472 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-23 15:15:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-23 15:15:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-23 15:15:53,697 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:53,698 INFO L353 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-07-23 15:15:53,698 INFO L414 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:53,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1004347965, now seen corresponding path program 44 times [2018-07-23 15:15:53,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:53,910 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:53,910 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-23 15:15:53,911 INFO L450 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-23 15:15:53,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-23 15:15:53,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:15:53,912 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-07-23 15:15:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:53,939 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-23 15:15:53,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-23 15:15:53,939 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-07-23 15:15:53,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:53,940 INFO L225 Difference]: With dead ends: 51 [2018-07-23 15:15:53,940 INFO L226 Difference]: Without dead ends: 49 [2018-07-23 15:15:53,941 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:15:53,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-23 15:15:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-23 15:15:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-23 15:15:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-23 15:15:53,944 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-07-23 15:15:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:53,944 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-23 15:15:53,944 INFO L472 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-23 15:15:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-23 15:15:53,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-23 15:15:53,945 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:53,945 INFO L353 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-07-23 15:15:53,945 INFO L414 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:53,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1070014036, now seen corresponding path program 45 times [2018-07-23 15:15:53,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:54,158 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:54,158 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-23 15:15:54,158 INFO L450 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-23 15:15:54,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-23 15:15:54,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:15:54,160 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-07-23 15:15:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:54,186 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-07-23 15:15:54,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-23 15:15:54,187 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-07-23 15:15:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:54,187 INFO L225 Difference]: With dead ends: 52 [2018-07-23 15:15:54,188 INFO L226 Difference]: Without dead ends: 50 [2018-07-23 15:15:54,188 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:15:54,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-23 15:15:54,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-23 15:15:54,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-23 15:15:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-23 15:15:54,191 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-07-23 15:15:54,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:54,192 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-23 15:15:54,192 INFO L472 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-23 15:15:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-23 15:15:54,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-23 15:15:54,192 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:54,193 INFO L353 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-07-23 15:15:54,193 INFO L414 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:54,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1189305059, now seen corresponding path program 46 times [2018-07-23 15:15:54,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:54,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:54,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-23 15:15:54,405 INFO L450 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-23 15:15:54,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-23 15:15:54,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:15:54,407 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-07-23 15:15:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:54,429 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-23 15:15:54,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-23 15:15:54,429 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-07-23 15:15:54,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:54,430 INFO L225 Difference]: With dead ends: 53 [2018-07-23 15:15:54,430 INFO L226 Difference]: Without dead ends: 51 [2018-07-23 15:15:54,431 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:15:54,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-23 15:15:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-23 15:15:54,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-23 15:15:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-23 15:15:54,434 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-07-23 15:15:54,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:54,434 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-23 15:15:54,434 INFO L472 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-23 15:15:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-23 15:15:54,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-23 15:15:54,435 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:54,435 INFO L353 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-07-23 15:15:54,435 INFO L414 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:54,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1786247028, now seen corresponding path program 47 times [2018-07-23 15:15:54,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:54,609 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:54,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-23 15:15:54,609 INFO L450 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-23 15:15:54,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-23 15:15:54,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:15:54,610 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-07-23 15:15:54,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:54,632 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-07-23 15:15:54,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-23 15:15:54,633 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-07-23 15:15:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:54,633 INFO L225 Difference]: With dead ends: 54 [2018-07-23 15:15:54,633 INFO L226 Difference]: Without dead ends: 52 [2018-07-23 15:15:54,634 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:15:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-23 15:15:54,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-23 15:15:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-23 15:15:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-23 15:15:54,638 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-07-23 15:15:54,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:54,638 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-23 15:15:54,639 INFO L472 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-23 15:15:54,639 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-23 15:15:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-23 15:15:54,639 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:54,640 INFO L353 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-07-23 15:15:54,640 INFO L414 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:54,640 INFO L82 PathProgramCache]: Analyzing trace with hash 460918787, now seen corresponding path program 48 times [2018-07-23 15:15:54,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:54,812 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:54,812 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-23 15:15:54,813 INFO L450 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-23 15:15:54,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-23 15:15:54,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:15:54,814 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-07-23 15:15:54,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:54,841 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-23 15:15:54,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-23 15:15:54,842 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-07-23 15:15:54,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:54,842 INFO L225 Difference]: With dead ends: 55 [2018-07-23 15:15:54,842 INFO L226 Difference]: Without dead ends: 53 [2018-07-23 15:15:54,844 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:15:54,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-23 15:15:54,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-23 15:15:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-23 15:15:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-23 15:15:54,847 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-07-23 15:15:54,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:54,847 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-23 15:15:54,847 INFO L472 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-23 15:15:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-23 15:15:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-23 15:15:54,848 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:54,848 INFO L353 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-07-23 15:15:54,848 INFO L414 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:54,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1403582316, now seen corresponding path program 49 times [2018-07-23 15:15:54,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:55,045 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:55,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-23 15:15:55,045 INFO L450 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-23 15:15:55,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-23 15:15:55,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:15:55,047 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-07-23 15:15:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:55,077 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-07-23 15:15:55,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-23 15:15:55,077 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-07-23 15:15:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:55,078 INFO L225 Difference]: With dead ends: 56 [2018-07-23 15:15:55,078 INFO L226 Difference]: Without dead ends: 54 [2018-07-23 15:15:55,079 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:15:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-23 15:15:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-23 15:15:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-23 15:15:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-23 15:15:55,081 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-07-23 15:15:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:55,082 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-23 15:15:55,082 INFO L472 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-23 15:15:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-23 15:15:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-23 15:15:55,082 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:55,082 INFO L353 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-07-23 15:15:55,083 INFO L414 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:55,083 INFO L82 PathProgramCache]: Analyzing trace with hash 561380643, now seen corresponding path program 50 times [2018-07-23 15:15:55,083 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:55,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:55,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-23 15:15:55,286 INFO L450 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-23 15:15:55,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-23 15:15:55,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:15:55,288 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-07-23 15:15:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:55,323 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-23 15:15:55,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:15:55,323 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-07-23 15:15:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:55,324 INFO L225 Difference]: With dead ends: 57 [2018-07-23 15:15:55,324 INFO L226 Difference]: Without dead ends: 55 [2018-07-23 15:15:55,325 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:15:55,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-23 15:15:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-23 15:15:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-23 15:15:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-23 15:15:55,332 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-07-23 15:15:55,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:55,332 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-23 15:15:55,332 INFO L472 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-23 15:15:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-23 15:15:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-23 15:15:55,333 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:55,333 INFO L353 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-07-23 15:15:55,333 INFO L414 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:55,333 INFO L82 PathProgramCache]: Analyzing trace with hash 222932556, now seen corresponding path program 51 times [2018-07-23 15:15:55,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:55,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:55,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-23 15:15:55,536 INFO L450 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-23 15:15:55,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-23 15:15:55,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:15:55,537 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-07-23 15:15:55,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:55,562 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-07-23 15:15:55,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-23 15:15:55,562 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-07-23 15:15:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:55,563 INFO L225 Difference]: With dead ends: 58 [2018-07-23 15:15:55,563 INFO L226 Difference]: Without dead ends: 56 [2018-07-23 15:15:55,564 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:15:55,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-23 15:15:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-23 15:15:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-23 15:15:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-23 15:15:55,566 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-07-23 15:15:55,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:55,566 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-23 15:15:55,567 INFO L472 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-23 15:15:55,567 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-23 15:15:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-23 15:15:55,567 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:55,567 INFO L353 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-07-23 15:15:55,567 INFO L414 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:55,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1679023549, now seen corresponding path program 52 times [2018-07-23 15:15:55,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:55,758 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:55,759 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-23 15:15:55,759 INFO L450 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-23 15:15:55,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-23 15:15:55,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:15:55,760 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-07-23 15:15:55,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:55,789 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-23 15:15:55,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-23 15:15:55,789 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-07-23 15:15:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:55,790 INFO L225 Difference]: With dead ends: 59 [2018-07-23 15:15:55,790 INFO L226 Difference]: Without dead ends: 57 [2018-07-23 15:15:55,791 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:15:55,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-23 15:15:55,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-23 15:15:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-23 15:15:55,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-23 15:15:55,793 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-07-23 15:15:55,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:55,794 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-23 15:15:55,794 INFO L472 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-23 15:15:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-23 15:15:55,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-23 15:15:55,794 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:55,795 INFO L353 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-07-23 15:15:55,795 INFO L414 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:55,795 INFO L82 PathProgramCache]: Analyzing trace with hash -510120660, now seen corresponding path program 53 times [2018-07-23 15:15:55,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:55,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:55,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-23 15:15:55,987 INFO L450 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-23 15:15:55,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-23 15:15:55,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:15:55,989 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-07-23 15:15:56,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:56,027 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-07-23 15:15:56,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-23 15:15:56,027 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-07-23 15:15:56,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:56,028 INFO L225 Difference]: With dead ends: 60 [2018-07-23 15:15:56,028 INFO L226 Difference]: Without dead ends: 58 [2018-07-23 15:15:56,029 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:15:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-23 15:15:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-23 15:15:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-23 15:15:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-23 15:15:56,032 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-07-23 15:15:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:56,032 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-23 15:15:56,033 INFO L472 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-23 15:15:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-23 15:15:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-23 15:15:56,033 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:56,033 INFO L353 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-07-23 15:15:56,034 INFO L414 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:56,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1366130531, now seen corresponding path program 54 times [2018-07-23 15:15:56,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:56,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:56,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-23 15:15:56,241 INFO L450 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-23 15:15:56,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-23 15:15:56,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:15:56,243 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-07-23 15:15:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:56,278 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-23 15:15:56,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-23 15:15:56,278 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-07-23 15:15:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:56,279 INFO L225 Difference]: With dead ends: 61 [2018-07-23 15:15:56,279 INFO L226 Difference]: Without dead ends: 59 [2018-07-23 15:15:56,280 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:15:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-23 15:15:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-23 15:15:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-23 15:15:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-23 15:15:56,283 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-07-23 15:15:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:56,283 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-23 15:15:56,283 INFO L472 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-23 15:15:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-23 15:15:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-23 15:15:56,284 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:56,284 INFO L353 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-07-23 15:15:56,284 INFO L414 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:56,285 INFO L82 PathProgramCache]: Analyzing trace with hash -599624692, now seen corresponding path program 55 times [2018-07-23 15:15:56,285 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:56,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:56,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-23 15:15:56,514 INFO L450 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-23 15:15:56,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-23 15:15:56,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:15:56,516 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-07-23 15:15:56,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:56,544 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-07-23 15:15:56,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-23 15:15:56,544 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-07-23 15:15:56,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:56,545 INFO L225 Difference]: With dead ends: 62 [2018-07-23 15:15:56,545 INFO L226 Difference]: Without dead ends: 60 [2018-07-23 15:15:56,546 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:15:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-23 15:15:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-23 15:15:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-23 15:15:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-23 15:15:56,550 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-07-23 15:15:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:56,550 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-23 15:15:56,550 INFO L472 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-23 15:15:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-23 15:15:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-23 15:15:56,551 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:56,551 INFO L353 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-07-23 15:15:56,552 INFO L414 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:56,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1408494461, now seen corresponding path program 56 times [2018-07-23 15:15:56,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:56,823 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:56,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-23 15:15:56,824 INFO L450 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-23 15:15:56,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-23 15:15:56,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:15:56,826 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-07-23 15:15:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:56,874 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-23 15:15:56,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-23 15:15:56,875 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-07-23 15:15:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:56,875 INFO L225 Difference]: With dead ends: 63 [2018-07-23 15:15:56,875 INFO L226 Difference]: Without dead ends: 61 [2018-07-23 15:15:56,877 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:15:56,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-23 15:15:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-23 15:15:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-23 15:15:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-23 15:15:56,881 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-07-23 15:15:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:56,882 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-23 15:15:56,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-23 15:15:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-23 15:15:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-23 15:15:56,883 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:56,883 INFO L353 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-07-23 15:15:56,883 INFO L414 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:56,883 INFO L82 PathProgramCache]: Analyzing trace with hash -713653524, now seen corresponding path program 57 times [2018-07-23 15:15:56,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:57,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:57,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-23 15:15:57,131 INFO L450 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-23 15:15:57,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-23 15:15:57,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:15:57,132 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-07-23 15:15:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:57,175 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-07-23 15:15:57,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-23 15:15:57,175 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-07-23 15:15:57,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:57,176 INFO L225 Difference]: With dead ends: 64 [2018-07-23 15:15:57,176 INFO L226 Difference]: Without dead ends: 62 [2018-07-23 15:15:57,178 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:15:57,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-23 15:15:57,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-23 15:15:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-23 15:15:57,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-23 15:15:57,182 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-07-23 15:15:57,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:57,182 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-23 15:15:57,182 INFO L472 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-23 15:15:57,182 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-23 15:15:57,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-23 15:15:57,183 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:57,183 INFO L353 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-07-23 15:15:57,183 INFO L414 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:57,183 INFO L82 PathProgramCache]: Analyzing trace with hash -648420957, now seen corresponding path program 58 times [2018-07-23 15:15:57,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:57,391 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:57,391 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-23 15:15:57,391 INFO L450 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-23 15:15:57,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-23 15:15:57,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:15:57,393 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-07-23 15:15:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:57,428 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-23 15:15:57,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-23 15:15:57,428 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-07-23 15:15:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:57,429 INFO L225 Difference]: With dead ends: 65 [2018-07-23 15:15:57,429 INFO L226 Difference]: Without dead ends: 63 [2018-07-23 15:15:57,431 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:15:57,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-23 15:15:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-23 15:15:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-23 15:15:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-23 15:15:57,434 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-07-23 15:15:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:57,434 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-23 15:15:57,434 INFO L472 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-23 15:15:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-23 15:15:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-23 15:15:57,435 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:57,435 INFO L353 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-07-23 15:15:57,435 INFO L414 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:57,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1373788620, now seen corresponding path program 59 times [2018-07-23 15:15:57,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:57,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:57,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-23 15:15:57,649 INFO L450 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-23 15:15:57,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-23 15:15:57,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:15:57,650 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-07-23 15:15:57,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:57,689 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-07-23 15:15:57,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-23 15:15:57,689 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-07-23 15:15:57,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:57,690 INFO L225 Difference]: With dead ends: 66 [2018-07-23 15:15:57,690 INFO L226 Difference]: Without dead ends: 64 [2018-07-23 15:15:57,691 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:15:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-23 15:15:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-23 15:15:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-23 15:15:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-23 15:15:57,694 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-07-23 15:15:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:57,695 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-23 15:15:57,695 INFO L472 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-23 15:15:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-23 15:15:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-23 15:15:57,695 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:57,695 INFO L353 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-07-23 15:15:57,696 INFO L414 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:57,696 INFO L82 PathProgramCache]: Analyzing trace with hash -362223933, now seen corresponding path program 60 times [2018-07-23 15:15:57,696 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:57,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:57,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-23 15:15:57,914 INFO L450 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-23 15:15:57,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-23 15:15:57,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:15:57,916 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-07-23 15:15:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:57,953 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-23 15:15:57,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-23 15:15:57,953 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-07-23 15:15:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:57,954 INFO L225 Difference]: With dead ends: 67 [2018-07-23 15:15:57,954 INFO L226 Difference]: Without dead ends: 65 [2018-07-23 15:15:57,956 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:15:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-23 15:15:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-23 15:15:57,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-23 15:15:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-23 15:15:57,959 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-07-23 15:15:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:57,959 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-23 15:15:57,959 INFO L472 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-23 15:15:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-23 15:15:57,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-23 15:15:57,960 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:57,960 INFO L353 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-07-23 15:15:57,960 INFO L414 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:57,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1655961772, now seen corresponding path program 61 times [2018-07-23 15:15:57,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:58,176 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:58,176 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-23 15:15:58,176 INFO L450 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-23 15:15:58,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-23 15:15:58,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:15:58,178 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-07-23 15:15:58,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:58,221 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-07-23 15:15:58,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-23 15:15:58,222 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-07-23 15:15:58,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:58,222 INFO L225 Difference]: With dead ends: 68 [2018-07-23 15:15:58,222 INFO L226 Difference]: Without dead ends: 66 [2018-07-23 15:15:58,224 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:15:58,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-23 15:15:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-23 15:15:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-23 15:15:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-23 15:15:58,227 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-07-23 15:15:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:58,227 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-23 15:15:58,227 INFO L472 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-23 15:15:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-23 15:15:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-23 15:15:58,228 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:58,228 INFO L353 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-07-23 15:15:58,228 INFO L414 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:58,228 INFO L82 PathProgramCache]: Analyzing trace with hash -204790813, now seen corresponding path program 62 times [2018-07-23 15:15:58,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:58,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:58,454 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-23 15:15:58,454 INFO L450 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-23 15:15:58,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-23 15:15:58,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:15:58,456 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-07-23 15:15:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:58,505 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-23 15:15:58,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-23 15:15:58,505 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-07-23 15:15:58,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:58,506 INFO L225 Difference]: With dead ends: 69 [2018-07-23 15:15:58,506 INFO L226 Difference]: Without dead ends: 67 [2018-07-23 15:15:58,507 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:15:58,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-23 15:15:58,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-23 15:15:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 15:15:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-23 15:15:58,511 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-07-23 15:15:58,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:58,512 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-23 15:15:58,512 INFO L472 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-23 15:15:58,512 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-23 15:15:58,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-23 15:15:58,512 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:58,513 INFO L353 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-07-23 15:15:58,513 INFO L414 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:58,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2053546100, now seen corresponding path program 63 times [2018-07-23 15:15:58,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:58,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:58,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-23 15:15:58,746 INFO L450 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-23 15:15:58,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-23 15:15:58,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:15:58,747 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-07-23 15:15:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:58,777 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-07-23 15:15:58,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-23 15:15:58,777 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-07-23 15:15:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:58,778 INFO L225 Difference]: With dead ends: 70 [2018-07-23 15:15:58,778 INFO L226 Difference]: Without dead ends: 68 [2018-07-23 15:15:58,779 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:15:58,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-23 15:15:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-23 15:15:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-23 15:15:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-23 15:15:58,782 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-07-23 15:15:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:58,782 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-23 15:15:58,783 INFO L472 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-23 15:15:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-23 15:15:58,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-23 15:15:58,783 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:58,783 INFO L353 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-07-23 15:15:58,784 INFO L414 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:58,784 INFO L82 PathProgramCache]: Analyzing trace with hash 764582147, now seen corresponding path program 64 times [2018-07-23 15:15:58,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:59,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:59,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-23 15:15:59,023 INFO L450 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-23 15:15:59,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-23 15:15:59,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:15:59,025 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-07-23 15:15:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:59,071 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-23 15:15:59,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-23 15:15:59,071 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-07-23 15:15:59,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:59,072 INFO L225 Difference]: With dead ends: 71 [2018-07-23 15:15:59,072 INFO L226 Difference]: Without dead ends: 69 [2018-07-23 15:15:59,073 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:15:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-23 15:15:59,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-23 15:15:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-23 15:15:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-23 15:15:59,076 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-07-23 15:15:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:59,076 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-23 15:15:59,076 INFO L472 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-23 15:15:59,077 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-23 15:15:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-23 15:15:59,077 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:59,077 INFO L353 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-07-23 15:15:59,077 INFO L414 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:59,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2067755412, now seen corresponding path program 65 times [2018-07-23 15:15:59,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:59,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:59,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-23 15:15:59,344 INFO L450 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-23 15:15:59,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-23 15:15:59,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:15:59,346 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-07-23 15:15:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:59,401 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-07-23 15:15:59,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-23 15:15:59,401 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-07-23 15:15:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:59,402 INFO L225 Difference]: With dead ends: 72 [2018-07-23 15:15:59,402 INFO L226 Difference]: Without dead ends: 70 [2018-07-23 15:15:59,403 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:15:59,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-23 15:15:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-23 15:15:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-23 15:15:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-23 15:15:59,407 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-07-23 15:15:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:59,407 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-23 15:15:59,407 INFO L472 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-23 15:15:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-23 15:15:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-23 15:15:59,408 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:59,408 INFO L353 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-07-23 15:15:59,408 INFO L414 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:59,409 INFO L82 PathProgramCache]: Analyzing trace with hash 324093475, now seen corresponding path program 66 times [2018-07-23 15:15:59,409 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:59,739 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:59,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-23 15:15:59,739 INFO L450 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-23 15:15:59,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-23 15:15:59,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:15:59,741 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-07-23 15:15:59,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:59,782 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-23 15:15:59,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-23 15:15:59,783 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-07-23 15:15:59,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:59,783 INFO L225 Difference]: With dead ends: 73 [2018-07-23 15:15:59,783 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 15:15:59,784 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:15:59,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 15:15:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-23 15:15:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-23 15:15:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-23 15:15:59,787 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-07-23 15:15:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:59,788 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-23 15:15:59,788 INFO L472 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-23 15:15:59,788 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-23 15:15:59,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-23 15:15:59,788 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:59,789 INFO L353 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-07-23 15:15:59,789 INFO L414 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:15:59,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1456964940, now seen corresponding path program 67 times [2018-07-23 15:15:59,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:00,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:00,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-23 15:16:00,023 INFO L450 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-23 15:16:00,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-23 15:16:00,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:16:00,024 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-07-23 15:16:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:00,060 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-07-23 15:16:00,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-23 15:16:00,060 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-07-23 15:16:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:00,061 INFO L225 Difference]: With dead ends: 74 [2018-07-23 15:16:00,061 INFO L226 Difference]: Without dead ends: 72 [2018-07-23 15:16:00,062 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:16:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-23 15:16:00,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-23 15:16:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-23 15:16:00,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-23 15:16:00,065 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-07-23 15:16:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:00,065 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-23 15:16:00,065 INFO L472 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-23 15:16:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-23 15:16:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-23 15:16:00,066 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:00,066 INFO L353 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-07-23 15:16:00,066 INFO L414 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:00,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2078725309, now seen corresponding path program 68 times [2018-07-23 15:16:00,066 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:00,297 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:00,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-23 15:16:00,298 INFO L450 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-23 15:16:00,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-23 15:16:00,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:16:00,299 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-07-23 15:16:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:00,353 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-23 15:16:00,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-23 15:16:00,354 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-07-23 15:16:00,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:00,354 INFO L225 Difference]: With dead ends: 75 [2018-07-23 15:16:00,354 INFO L226 Difference]: Without dead ends: 73 [2018-07-23 15:16:00,355 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:16:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-23 15:16:00,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-23 15:16:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-23 15:16:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-23 15:16:00,358 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-07-23 15:16:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:00,359 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-23 15:16:00,359 INFO L472 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-23 15:16:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-23 15:16:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-23 15:16:00,359 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:00,360 INFO L353 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-07-23 15:16:00,360 INFO L414 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:00,360 INFO L82 PathProgramCache]: Analyzing trace with hash -15973332, now seen corresponding path program 69 times [2018-07-23 15:16:00,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:00,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:00,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-23 15:16:00,588 INFO L450 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-23 15:16:00,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-23 15:16:00,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:16:00,590 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-07-23 15:16:00,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:00,649 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-07-23 15:16:00,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-23 15:16:00,649 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-07-23 15:16:00,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:00,650 INFO L225 Difference]: With dead ends: 76 [2018-07-23 15:16:00,650 INFO L226 Difference]: Without dead ends: 74 [2018-07-23 15:16:00,651 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:16:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-23 15:16:00,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-23 15:16:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-23 15:16:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-23 15:16:00,654 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-07-23 15:16:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:00,654 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-23 15:16:00,654 INFO L472 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-23 15:16:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-23 15:16:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-23 15:16:00,655 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:00,655 INFO L353 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-07-23 15:16:00,655 INFO L414 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:00,655 INFO L82 PathProgramCache]: Analyzing trace with hash -495171485, now seen corresponding path program 70 times [2018-07-23 15:16:00,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:00,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:00,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-23 15:16:00,898 INFO L450 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-23 15:16:00,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-23 15:16:00,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:16:00,900 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-07-23 15:16:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:00,962 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-23 15:16:00,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-23 15:16:00,963 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-07-23 15:16:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:00,963 INFO L225 Difference]: With dead ends: 77 [2018-07-23 15:16:00,964 INFO L226 Difference]: Without dead ends: 75 [2018-07-23 15:16:00,964 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:16:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-23 15:16:00,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-23 15:16:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-23 15:16:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-23 15:16:00,968 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-07-23 15:16:00,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:00,968 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-23 15:16:00,968 INFO L472 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-23 15:16:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-23 15:16:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-23 15:16:00,969 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:00,969 INFO L353 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-07-23 15:16:00,969 INFO L414 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:00,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1829554956, now seen corresponding path program 71 times [2018-07-23 15:16:00,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:01,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:01,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-23 15:16:01,209 INFO L450 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-23 15:16:01,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-23 15:16:01,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:16:01,210 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-07-23 15:16:01,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:01,276 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-07-23 15:16:01,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-23 15:16:01,276 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-07-23 15:16:01,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:01,277 INFO L225 Difference]: With dead ends: 78 [2018-07-23 15:16:01,277 INFO L226 Difference]: Without dead ends: 76 [2018-07-23 15:16:01,277 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:16:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-23 15:16:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-23 15:16:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-23 15:16:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-23 15:16:01,281 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-07-23 15:16:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:01,281 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-23 15:16:01,281 INFO L472 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-23 15:16:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-23 15:16:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-23 15:16:01,282 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:01,282 INFO L353 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-07-23 15:16:01,282 INFO L414 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:01,282 INFO L82 PathProgramCache]: Analyzing trace with hash 881630595, now seen corresponding path program 72 times [2018-07-23 15:16:01,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:01,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:01,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-23 15:16:01,521 INFO L450 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-23 15:16:01,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-23 15:16:01,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:16:01,522 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-07-23 15:16:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:01,586 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-23 15:16:01,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-23 15:16:01,586 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-07-23 15:16:01,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:01,587 INFO L225 Difference]: With dead ends: 79 [2018-07-23 15:16:01,587 INFO L226 Difference]: Without dead ends: 77 [2018-07-23 15:16:01,588 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:16:01,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-23 15:16:01,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-23 15:16:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-23 15:16:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-23 15:16:01,591 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-07-23 15:16:01,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:01,591 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-23 15:16:01,591 INFO L472 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-23 15:16:01,591 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-23 15:16:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-23 15:16:01,592 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:01,592 INFO L353 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-07-23 15:16:01,592 INFO L414 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:01,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1560746476, now seen corresponding path program 73 times [2018-07-23 15:16:01,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:01,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:01,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-23 15:16:01,829 INFO L450 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-23 15:16:01,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-23 15:16:01,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:16:01,831 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-07-23 15:16:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:01,894 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-07-23 15:16:01,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-23 15:16:01,894 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-07-23 15:16:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:01,895 INFO L225 Difference]: With dead ends: 80 [2018-07-23 15:16:01,895 INFO L226 Difference]: Without dead ends: 78 [2018-07-23 15:16:01,896 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:16:01,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-23 15:16:01,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-23 15:16:01,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-23 15:16:01,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-23 15:16:01,899 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-07-23 15:16:01,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:01,899 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-23 15:16:01,899 INFO L472 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-23 15:16:01,899 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-23 15:16:01,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-23 15:16:01,900 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:01,900 INFO L353 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-07-23 15:16:01,900 INFO L414 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:01,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1138502307, now seen corresponding path program 74 times [2018-07-23 15:16:01,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:02,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:02,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-23 15:16:02,192 INFO L450 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-23 15:16:02,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-23 15:16:02,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:16:02,194 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-07-23 15:16:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:02,264 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-23 15:16:02,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-23 15:16:02,264 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-07-23 15:16:02,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:02,265 INFO L225 Difference]: With dead ends: 81 [2018-07-23 15:16:02,265 INFO L226 Difference]: Without dead ends: 79 [2018-07-23 15:16:02,266 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:16:02,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-23 15:16:02,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-23 15:16:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-23 15:16:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-23 15:16:02,269 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-07-23 15:16:02,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:02,270 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-23 15:16:02,270 INFO L472 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-23 15:16:02,270 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-23 15:16:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-23 15:16:02,271 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:02,271 INFO L353 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-07-23 15:16:02,271 INFO L414 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:02,271 INFO L82 PathProgramCache]: Analyzing trace with hash 933834956, now seen corresponding path program 75 times [2018-07-23 15:16:02,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:02,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:02,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-23 15:16:02,516 INFO L450 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-23 15:16:02,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-23 15:16:02,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:16:02,518 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-07-23 15:16:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:02,592 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-07-23 15:16:02,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-23 15:16:02,593 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-07-23 15:16:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:02,593 INFO L225 Difference]: With dead ends: 82 [2018-07-23 15:16:02,594 INFO L226 Difference]: Without dead ends: 80 [2018-07-23 15:16:02,594 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:16:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-23 15:16:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-23 15:16:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-23 15:16:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-23 15:16:02,598 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-07-23 15:16:02,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:02,598 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-23 15:16:02,598 INFO L472 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-23 15:16:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-23 15:16:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-23 15:16:02,599 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:02,599 INFO L353 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-07-23 15:16:02,599 INFO L414 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:02,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1115885629, now seen corresponding path program 76 times [2018-07-23 15:16:02,600 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:02,854 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:02,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-23 15:16:02,854 INFO L450 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-23 15:16:02,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-23 15:16:02,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:16:02,856 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-07-23 15:16:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:02,920 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-23 15:16:02,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-23 15:16:02,920 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-07-23 15:16:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:02,921 INFO L225 Difference]: With dead ends: 83 [2018-07-23 15:16:02,921 INFO L226 Difference]: Without dead ends: 81 [2018-07-23 15:16:02,922 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:16:02,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-23 15:16:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-23 15:16:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-23 15:16:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-23 15:16:02,925 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-07-23 15:16:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:02,926 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-23 15:16:02,926 INFO L472 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-23 15:16:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-23 15:16:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-23 15:16:02,926 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:02,927 INFO L353 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-07-23 15:16:02,927 INFO L414 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:02,927 INFO L82 PathProgramCache]: Analyzing trace with hash -232714324, now seen corresponding path program 77 times [2018-07-23 15:16:02,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:03,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:03,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-23 15:16:03,199 INFO L450 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-23 15:16:03,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-23 15:16:03,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:16:03,201 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-07-23 15:16:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:03,241 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-07-23 15:16:03,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-23 15:16:03,242 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-07-23 15:16:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:03,243 INFO L225 Difference]: With dead ends: 84 [2018-07-23 15:16:03,243 INFO L226 Difference]: Without dead ends: 82 [2018-07-23 15:16:03,244 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:16:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-23 15:16:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-23 15:16:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-23 15:16:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-23 15:16:03,248 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-07-23 15:16:03,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:03,248 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-23 15:16:03,248 INFO L472 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-23 15:16:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-23 15:16:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-23 15:16:03,249 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:03,249 INFO L353 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-07-23 15:16:03,249 INFO L414 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1375792355, now seen corresponding path program 78 times [2018-07-23 15:16:03,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:03,503 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:03,504 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-23 15:16:03,504 INFO L450 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-23 15:16:03,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-23 15:16:03,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:16:03,506 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-07-23 15:16:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:03,567 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-23 15:16:03,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-23 15:16:03,567 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-07-23 15:16:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:03,568 INFO L225 Difference]: With dead ends: 85 [2018-07-23 15:16:03,568 INFO L226 Difference]: Without dead ends: 83 [2018-07-23 15:16:03,569 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:16:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-23 15:16:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-23 15:16:03,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-23 15:16:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-23 15:16:03,572 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-07-23 15:16:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:03,572 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-23 15:16:03,573 INFO L472 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-23 15:16:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-23 15:16:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-23 15:16:03,573 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:03,573 INFO L353 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-07-23 15:16:03,574 INFO L414 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:03,574 INFO L82 PathProgramCache]: Analyzing trace with hash -300108148, now seen corresponding path program 79 times [2018-07-23 15:16:03,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:03,828 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:03,828 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-23 15:16:03,828 INFO L450 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-23 15:16:03,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-23 15:16:03,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:16:03,830 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-07-23 15:16:03,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:03,912 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-07-23 15:16:03,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-23 15:16:03,913 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-07-23 15:16:03,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:03,914 INFO L225 Difference]: With dead ends: 86 [2018-07-23 15:16:03,914 INFO L226 Difference]: Without dead ends: 84 [2018-07-23 15:16:03,915 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:16:03,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-23 15:16:03,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-23 15:16:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-23 15:16:03,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-23 15:16:03,918 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-07-23 15:16:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:03,919 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-23 15:16:03,919 INFO L472 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-23 15:16:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-23 15:16:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-23 15:16:03,920 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:03,920 INFO L353 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-07-23 15:16:03,920 INFO L414 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:03,920 INFO L82 PathProgramCache]: Analyzing trace with hash -713416189, now seen corresponding path program 80 times [2018-07-23 15:16:03,920 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:04,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:04,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-23 15:16:04,180 INFO L450 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-23 15:16:04,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-23 15:16:04,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:16:04,181 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-07-23 15:16:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:04,241 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-23 15:16:04,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-23 15:16:04,242 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-07-23 15:16:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:04,242 INFO L225 Difference]: With dead ends: 87 [2018-07-23 15:16:04,242 INFO L226 Difference]: Without dead ends: 85 [2018-07-23 15:16:04,243 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:16:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-23 15:16:04,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-23 15:16:04,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-23 15:16:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-23 15:16:04,246 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-07-23 15:16:04,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:04,247 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-23 15:16:04,247 INFO L472 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-23 15:16:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-23 15:16:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-23 15:16:04,248 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:04,248 INFO L353 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-07-23 15:16:04,248 INFO L414 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:04,248 INFO L82 PathProgramCache]: Analyzing trace with hash -641063572, now seen corresponding path program 81 times [2018-07-23 15:16:04,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:04,580 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:04,580 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-23 15:16:04,581 INFO L450 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-23 15:16:04,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-23 15:16:04,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:16:04,583 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-07-23 15:16:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:04,634 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-07-23 15:16:04,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-23 15:16:04,634 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-07-23 15:16:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:04,635 INFO L225 Difference]: With dead ends: 88 [2018-07-23 15:16:04,635 INFO L226 Difference]: Without dead ends: 86 [2018-07-23 15:16:04,636 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:16:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-23 15:16:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-23 15:16:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-23 15:16:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-23 15:16:04,640 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-07-23 15:16:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:04,641 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-23 15:16:04,641 INFO L472 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-23 15:16:04,641 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-23 15:16:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-23 15:16:04,642 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:04,642 INFO L353 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-07-23 15:16:04,642 INFO L414 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:04,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1601867555, now seen corresponding path program 82 times [2018-07-23 15:16:04,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:04,977 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:04,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-23 15:16:04,978 INFO L450 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-23 15:16:04,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-23 15:16:04,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:16:04,979 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-07-23 15:16:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:05,062 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-23 15:16:05,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-23 15:16:05,062 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-07-23 15:16:05,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:05,066 INFO L225 Difference]: With dead ends: 89 [2018-07-23 15:16:05,066 INFO L226 Difference]: Without dead ends: 87 [2018-07-23 15:16:05,067 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:16:05,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-23 15:16:05,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-23 15:16:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-23 15:16:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-23 15:16:05,071 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-07-23 15:16:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:05,071 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-23 15:16:05,071 INFO L472 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-23 15:16:05,071 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-23 15:16:05,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-23 15:16:05,072 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:05,072 INFO L353 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-07-23 15:16:05,072 INFO L414 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:05,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1881711540, now seen corresponding path program 83 times [2018-07-23 15:16:05,073 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:05,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:05,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-23 15:16:05,323 INFO L450 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-23 15:16:05,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-23 15:16:05,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:16:05,325 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-07-23 15:16:05,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:05,370 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-07-23 15:16:05,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-23 15:16:05,370 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-07-23 15:16:05,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:05,371 INFO L225 Difference]: With dead ends: 90 [2018-07-23 15:16:05,371 INFO L226 Difference]: Without dead ends: 88 [2018-07-23 15:16:05,372 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:16:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-23 15:16:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-23 15:16:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-23 15:16:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-23 15:16:05,375 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-07-23 15:16:05,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:05,376 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-23 15:16:05,376 INFO L472 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-23 15:16:05,376 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-23 15:16:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-23 15:16:05,377 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:05,377 INFO L353 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-07-23 15:16:05,377 INFO L414 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:05,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1796486211, now seen corresponding path program 84 times [2018-07-23 15:16:05,377 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:05,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:05,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-23 15:16:05,650 INFO L450 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-23 15:16:05,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-23 15:16:05,652 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:16:05,653 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-07-23 15:16:05,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:05,747 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-23 15:16:05,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-23 15:16:05,747 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-07-23 15:16:05,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:05,748 INFO L225 Difference]: With dead ends: 91 [2018-07-23 15:16:05,748 INFO L226 Difference]: Without dead ends: 89 [2018-07-23 15:16:05,749 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:16:05,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-23 15:16:05,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-23 15:16:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-23 15:16:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-23 15:16:05,754 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-07-23 15:16:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:05,754 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-23 15:16:05,754 INFO L472 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-23 15:16:05,755 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-23 15:16:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-23 15:16:05,756 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:05,756 INFO L353 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-07-23 15:16:05,757 INFO L414 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:05,757 INFO L82 PathProgramCache]: Analyzing trace with hash -143500500, now seen corresponding path program 85 times [2018-07-23 15:16:05,757 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:06,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:06,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-23 15:16:06,041 INFO L450 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-23 15:16:06,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-23 15:16:06,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:16:06,044 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-07-23 15:16:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:06,097 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-07-23 15:16:06,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-23 15:16:06,097 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-07-23 15:16:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:06,098 INFO L225 Difference]: With dead ends: 92 [2018-07-23 15:16:06,098 INFO L226 Difference]: Without dead ends: 90 [2018-07-23 15:16:06,099 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:16:06,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-23 15:16:06,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-23 15:16:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-23 15:16:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-23 15:16:06,103 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-07-23 15:16:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:06,104 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-23 15:16:06,104 INFO L472 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-23 15:16:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-23 15:16:06,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-23 15:16:06,105 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:06,105 INFO L353 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-07-23 15:16:06,105 INFO L414 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:06,107 INFO L82 PathProgramCache]: Analyzing trace with hash -153546397, now seen corresponding path program 86 times [2018-07-23 15:16:06,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:06,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:06,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-23 15:16:06,397 INFO L450 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-23 15:16:06,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-23 15:16:06,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:16:06,399 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-07-23 15:16:06,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:06,513 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-23 15:16:06,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-23 15:16:06,513 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-07-23 15:16:06,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:06,514 INFO L225 Difference]: With dead ends: 93 [2018-07-23 15:16:06,514 INFO L226 Difference]: Without dead ends: 91 [2018-07-23 15:16:06,515 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:16:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-23 15:16:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-23 15:16:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-23 15:16:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-23 15:16:06,518 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-07-23 15:16:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:06,518 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-23 15:16:06,518 INFO L472 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-23 15:16:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-23 15:16:06,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-23 15:16:06,519 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:06,519 INFO L353 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-07-23 15:16:06,519 INFO L414 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:06,520 INFO L82 PathProgramCache]: Analyzing trace with hash -464969204, now seen corresponding path program 87 times [2018-07-23 15:16:06,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:06,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:06,821 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-23 15:16:06,821 INFO L450 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-23 15:16:06,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-23 15:16:06,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:16:06,822 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-07-23 15:16:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:06,868 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-07-23 15:16:06,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-23 15:16:06,868 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-07-23 15:16:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:06,869 INFO L225 Difference]: With dead ends: 94 [2018-07-23 15:16:06,869 INFO L226 Difference]: Without dead ends: 92 [2018-07-23 15:16:06,870 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:16:06,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-23 15:16:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-23 15:16:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-23 15:16:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-23 15:16:06,874 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-07-23 15:16:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:06,874 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-23 15:16:06,874 INFO L472 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-23 15:16:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-23 15:16:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-23 15:16:06,875 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:06,875 INFO L353 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-07-23 15:16:06,875 INFO L414 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:06,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1529141629, now seen corresponding path program 88 times [2018-07-23 15:16:06,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:07,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:07,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-23 15:16:07,140 INFO L450 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-23 15:16:07,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-23 15:16:07,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:16:07,142 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-07-23 15:16:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:07,238 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-23 15:16:07,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-23 15:16:07,239 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-07-23 15:16:07,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:07,239 INFO L225 Difference]: With dead ends: 95 [2018-07-23 15:16:07,240 INFO L226 Difference]: Without dead ends: 93 [2018-07-23 15:16:07,240 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:16:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-23 15:16:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-23 15:16:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-23 15:16:07,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-23 15:16:07,243 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-07-23 15:16:07,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:07,244 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-23 15:16:07,244 INFO L472 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-23 15:16:07,244 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-23 15:16:07,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 15:16:07,245 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:07,245 INFO L353 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-07-23 15:16:07,245 INFO L414 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:07,245 INFO L82 PathProgramCache]: Analyzing trace with hash -158748436, now seen corresponding path program 89 times [2018-07-23 15:16:07,245 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:07,574 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:07,574 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-23 15:16:07,574 INFO L450 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-23 15:16:07,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-23 15:16:07,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:16:07,576 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-07-23 15:16:07,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:07,658 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-07-23 15:16:07,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-23 15:16:07,658 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-07-23 15:16:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:07,659 INFO L225 Difference]: With dead ends: 96 [2018-07-23 15:16:07,659 INFO L226 Difference]: Without dead ends: 94 [2018-07-23 15:16:07,660 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:16:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-23 15:16:07,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-23 15:16:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-23 15:16:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-23 15:16:07,664 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-07-23 15:16:07,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:07,664 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-23 15:16:07,664 INFO L472 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-23 15:16:07,664 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-23 15:16:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-23 15:16:07,665 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:07,665 INFO L353 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-07-23 15:16:07,665 INFO L414 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:07,665 INFO L82 PathProgramCache]: Analyzing trace with hash -626232413, now seen corresponding path program 90 times [2018-07-23 15:16:07,665 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:07,948 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:07,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-23 15:16:07,948 INFO L450 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-23 15:16:07,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-23 15:16:07,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:16:07,950 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-07-23 15:16:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:08,002 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-23 15:16:08,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-23 15:16:08,003 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-07-23 15:16:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:08,003 INFO L225 Difference]: With dead ends: 97 [2018-07-23 15:16:08,003 INFO L226 Difference]: Without dead ends: 95 [2018-07-23 15:16:08,004 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:16:08,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-23 15:16:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-23 15:16:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-23 15:16:08,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-23 15:16:08,007 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-07-23 15:16:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:08,007 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-23 15:16:08,007 INFO L472 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-23 15:16:08,007 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-23 15:16:08,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-23 15:16:08,008 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:08,008 INFO L353 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-07-23 15:16:08,011 INFO L414 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:08,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2061633484, now seen corresponding path program 91 times [2018-07-23 15:16:08,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:08,303 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:08,303 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-23 15:16:08,304 INFO L450 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-23 15:16:08,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-23 15:16:08,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:16:08,305 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-07-23 15:16:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:08,394 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-07-23 15:16:08,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-23 15:16:08,394 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-07-23 15:16:08,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:08,395 INFO L225 Difference]: With dead ends: 98 [2018-07-23 15:16:08,395 INFO L226 Difference]: Without dead ends: 96 [2018-07-23 15:16:08,396 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:16:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-23 15:16:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-23 15:16:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-23 15:16:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-23 15:16:08,401 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-07-23 15:16:08,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:08,401 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-23 15:16:08,401 INFO L472 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-23 15:16:08,401 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-23 15:16:08,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-23 15:16:08,402 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:08,402 INFO L353 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-07-23 15:16:08,402 INFO L414 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:08,402 INFO L82 PathProgramCache]: Analyzing trace with hash -513869629, now seen corresponding path program 92 times [2018-07-23 15:16:08,402 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:08,670 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:08,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-23 15:16:08,671 INFO L450 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-23 15:16:08,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-23 15:16:08,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:16:08,672 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-07-23 15:16:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:08,784 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-23 15:16:08,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-23 15:16:08,785 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-07-23 15:16:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:08,786 INFO L225 Difference]: With dead ends: 99 [2018-07-23 15:16:08,786 INFO L226 Difference]: Without dead ends: 97 [2018-07-23 15:16:08,786 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:16:08,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-23 15:16:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-23 15:16:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-23 15:16:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-23 15:16:08,789 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-07-23 15:16:08,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:08,789 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-23 15:16:08,789 INFO L472 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-23 15:16:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-23 15:16:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-23 15:16:08,790 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:08,790 INFO L353 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-07-23 15:16:08,790 INFO L414 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:08,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1249912492, now seen corresponding path program 93 times [2018-07-23 15:16:08,791 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:09,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:09,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-23 15:16:09,135 INFO L450 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-23 15:16:09,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-23 15:16:09,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:16:09,136 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-07-23 15:16:09,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:09,239 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-07-23 15:16:09,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-23 15:16:09,239 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-07-23 15:16:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:09,240 INFO L225 Difference]: With dead ends: 100 [2018-07-23 15:16:09,240 INFO L226 Difference]: Without dead ends: 98 [2018-07-23 15:16:09,241 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:16:09,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-23 15:16:09,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-23 15:16:09,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-23 15:16:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-23 15:16:09,247 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-07-23 15:16:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:09,247 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-23 15:16:09,247 INFO L472 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-23 15:16:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-23 15:16:09,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-23 15:16:09,248 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:09,248 INFO L353 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-07-23 15:16:09,248 INFO L414 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash 92583395, now seen corresponding path program 94 times [2018-07-23 15:16:09,249 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:09,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:09,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-23 15:16:09,615 INFO L450 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-23 15:16:09,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-23 15:16:09,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:16:09,618 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-07-23 15:16:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:09,678 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-23 15:16:09,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-23 15:16:09,679 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-07-23 15:16:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:09,679 INFO L225 Difference]: With dead ends: 101 [2018-07-23 15:16:09,680 INFO L226 Difference]: Without dead ends: 99 [2018-07-23 15:16:09,680 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:16:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-23 15:16:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-23 15:16:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-23 15:16:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-23 15:16:09,683 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-07-23 15:16:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:09,683 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-23 15:16:09,683 INFO L472 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-23 15:16:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-23 15:16:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-23 15:16:09,684 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:09,684 INFO L353 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-07-23 15:16:09,684 INFO L414 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:09,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1424880244, now seen corresponding path program 95 times [2018-07-23 15:16:09,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:10,085 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:10,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-23 15:16:10,085 INFO L450 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-23 15:16:10,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-23 15:16:10,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:16:10,087 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-07-23 15:16:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:10,133 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-07-23 15:16:10,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-23 15:16:10,133 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-07-23 15:16:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:10,134 INFO L225 Difference]: With dead ends: 102 [2018-07-23 15:16:10,135 INFO L226 Difference]: Without dead ends: 100 [2018-07-23 15:16:10,135 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:16:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-23 15:16:10,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-23 15:16:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-23 15:16:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-23 15:16:10,139 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-07-23 15:16:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:10,140 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-23 15:16:10,140 INFO L472 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-23 15:16:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-23 15:16:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-23 15:16:10,140 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:10,141 INFO L353 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-07-23 15:16:10,141 INFO L414 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:10,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1221612797, now seen corresponding path program 96 times [2018-07-23 15:16:10,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:10,472 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:10,472 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-23 15:16:10,472 INFO L450 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-23 15:16:10,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-23 15:16:10,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:16:10,473 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-07-23 15:16:10,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:10,541 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-23 15:16:10,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-23 15:16:10,542 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-07-23 15:16:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:10,542 INFO L225 Difference]: With dead ends: 103 [2018-07-23 15:16:10,542 INFO L226 Difference]: Without dead ends: 101 [2018-07-23 15:16:10,543 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:16:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-23 15:16:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-23 15:16:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-23 15:16:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-23 15:16:10,546 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-07-23 15:16:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:10,546 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-23 15:16:10,546 INFO L472 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-23 15:16:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-23 15:16:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 15:16:10,547 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:10,547 INFO L353 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-07-23 15:16:10,547 INFO L414 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:10,547 INFO L82 PathProgramCache]: Analyzing trace with hash 784710764, now seen corresponding path program 97 times [2018-07-23 15:16:10,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:10,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:10,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-23 15:16:10,820 INFO L450 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-23 15:16:10,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-23 15:16:10,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:16:10,821 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-07-23 15:16:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:10,891 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-07-23 15:16:10,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-23 15:16:10,891 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-07-23 15:16:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:10,892 INFO L225 Difference]: With dead ends: 104 [2018-07-23 15:16:10,892 INFO L226 Difference]: Without dead ends: 102 [2018-07-23 15:16:10,893 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:16:10,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-23 15:16:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-23 15:16:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-23 15:16:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-23 15:16:10,896 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-07-23 15:16:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:10,896 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-23 15:16:10,896 INFO L472 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-23 15:16:10,896 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-23 15:16:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-23 15:16:10,897 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:10,897 INFO L353 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-07-23 15:16:10,897 INFO L414 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1443768285, now seen corresponding path program 98 times [2018-07-23 15:16:10,898 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:11,210 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:11,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-23 15:16:11,211 INFO L450 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-23 15:16:11,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-23 15:16:11,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:16:11,212 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-07-23 15:16:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:11,282 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-23 15:16:11,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-23 15:16:11,283 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-07-23 15:16:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:11,283 INFO L225 Difference]: With dead ends: 105 [2018-07-23 15:16:11,283 INFO L226 Difference]: Without dead ends: 103 [2018-07-23 15:16:11,284 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:16:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-23 15:16:11,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-23 15:16:11,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-23 15:16:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-23 15:16:11,287 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-07-23 15:16:11,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:11,287 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-23 15:16:11,287 INFO L472 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-23 15:16:11,287 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-23 15:16:11,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-23 15:16:11,288 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:11,288 INFO L353 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-07-23 15:16:11,288 INFO L414 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:11,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1807142068, now seen corresponding path program 99 times [2018-07-23 15:16:11,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:11,617 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:11,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-23 15:16:11,617 INFO L450 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-23 15:16:11,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-23 15:16:11,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:16:11,619 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-07-23 15:16:11,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:11,692 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-07-23 15:16:11,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-23 15:16:11,692 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-07-23 15:16:11,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:11,693 INFO L225 Difference]: With dead ends: 106 [2018-07-23 15:16:11,694 INFO L226 Difference]: Without dead ends: 104 [2018-07-23 15:16:11,694 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:16:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-23 15:16:11,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-23 15:16:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-23 15:16:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-23 15:16:11,698 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-07-23 15:16:11,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:11,698 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-23 15:16:11,698 INFO L472 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-23 15:16:11,698 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-23 15:16:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-23 15:16:11,699 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:11,699 INFO L353 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-07-23 15:16:11,699 INFO L414 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:11,699 INFO L82 PathProgramCache]: Analyzing trace with hash -186827453, now seen corresponding path program 100 times [2018-07-23 15:16:11,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:11,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:11,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-23 15:16:11,961 INFO L450 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-23 15:16:11,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-23 15:16:11,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:16:11,963 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-07-23 15:16:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:12,024 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-23 15:16:12,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-23 15:16:12,024 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-07-23 15:16:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:12,025 INFO L225 Difference]: With dead ends: 107 [2018-07-23 15:16:12,025 INFO L226 Difference]: Without dead ends: 105 [2018-07-23 15:16:12,026 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:16:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-23 15:16:12,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-23 15:16:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-23 15:16:12,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-23 15:16:12,028 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-07-23 15:16:12,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:12,029 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-23 15:16:12,029 INFO L472 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-23 15:16:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-23 15:16:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 15:16:12,029 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:12,030 INFO L353 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-07-23 15:16:12,030 INFO L414 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:12,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1496681940, now seen corresponding path program 101 times [2018-07-23 15:16:12,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:12,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:12,338 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-23 15:16:12,339 INFO L450 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-23 15:16:12,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-23 15:16:12,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:16:12,340 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-07-23 15:16:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:12,412 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-07-23 15:16:12,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-23 15:16:12,412 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-07-23 15:16:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:12,413 INFO L225 Difference]: With dead ends: 108 [2018-07-23 15:16:12,413 INFO L226 Difference]: Without dead ends: 106 [2018-07-23 15:16:12,414 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:16:12,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-23 15:16:12,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-23 15:16:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-23 15:16:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-23 15:16:12,417 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-07-23 15:16:12,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:12,417 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-23 15:16:12,417 INFO L472 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-23 15:16:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-23 15:16:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-23 15:16:12,418 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:12,418 INFO L353 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-07-23 15:16:12,418 INFO L414 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:12,418 INFO L82 PathProgramCache]: Analyzing trace with hash 847501923, now seen corresponding path program 102 times [2018-07-23 15:16:12,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:12,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:12,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-23 15:16:12,720 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-23 15:16:12,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-23 15:16:12,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:16:12,721 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-07-23 15:16:12,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:12,796 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-23 15:16:12,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-23 15:16:12,796 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-07-23 15:16:12,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:12,797 INFO L225 Difference]: With dead ends: 109 [2018-07-23 15:16:12,797 INFO L226 Difference]: Without dead ends: 107 [2018-07-23 15:16:12,798 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:16:12,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-23 15:16:12,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-23 15:16:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-23 15:16:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-23 15:16:12,801 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-07-23 15:16:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:12,801 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-23 15:16:12,801 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-23 15:16:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-23 15:16:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-23 15:16:12,802 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:12,802 INFO L353 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-07-23 15:16:12,802 INFO L414 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash 502757644, now seen corresponding path program 103 times [2018-07-23 15:16:12,802 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:13,077 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:13,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-23 15:16:13,077 INFO L450 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-23 15:16:13,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-23 15:16:13,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:16:13,079 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-07-23 15:16:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:13,198 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-07-23 15:16:13,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-23 15:16:13,199 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-07-23 15:16:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:13,199 INFO L225 Difference]: With dead ends: 110 [2018-07-23 15:16:13,199 INFO L226 Difference]: Without dead ends: 108 [2018-07-23 15:16:13,200 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:16:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-23 15:16:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-23 15:16:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-23 15:16:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-23 15:16:13,203 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-07-23 15:16:13,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:13,203 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-23 15:16:13,203 INFO L472 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-23 15:16:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-23 15:16:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-23 15:16:13,204 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:13,204 INFO L353 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-07-23 15:16:13,204 INFO L414 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:13,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1594380413, now seen corresponding path program 104 times [2018-07-23 15:16:13,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:13,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:13,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-23 15:16:13,523 INFO L450 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-23 15:16:13,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-23 15:16:13,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:16:13,525 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-07-23 15:16:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:13,633 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-23 15:16:13,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-23 15:16:13,633 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-07-23 15:16:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:13,634 INFO L225 Difference]: With dead ends: 111 [2018-07-23 15:16:13,634 INFO L226 Difference]: Without dead ends: 109 [2018-07-23 15:16:13,634 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:16:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-23 15:16:13,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-23 15:16:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-23 15:16:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-23 15:16:13,637 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-07-23 15:16:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:13,638 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-23 15:16:13,638 INFO L472 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-23 15:16:13,638 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-23 15:16:13,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-23 15:16:13,638 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:13,639 INFO L353 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-07-23 15:16:13,639 INFO L414 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:13,639 INFO L82 PathProgramCache]: Analyzing trace with hash 2113816556, now seen corresponding path program 105 times [2018-07-23 15:16:13,639 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:13,905 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:13,905 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-23 15:16:13,906 INFO L450 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-23 15:16:13,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-23 15:16:13,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:16:13,907 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-07-23 15:16:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:13,962 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-07-23 15:16:13,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-23 15:16:13,962 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-07-23 15:16:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:13,962 INFO L225 Difference]: With dead ends: 112 [2018-07-23 15:16:13,962 INFO L226 Difference]: Without dead ends: 110 [2018-07-23 15:16:13,963 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:16:13,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-23 15:16:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-23 15:16:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-23 15:16:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-23 15:16:13,966 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-07-23 15:16:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:13,966 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-23 15:16:13,967 INFO L472 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-23 15:16:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-23 15:16:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-23 15:16:13,967 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:13,967 INFO L353 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-07-23 15:16:13,968 INFO L414 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:13,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1103805603, now seen corresponding path program 106 times [2018-07-23 15:16:13,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:14,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:14,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-23 15:16:14,256 INFO L450 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-23 15:16:14,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-23 15:16:14,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:16:14,258 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-07-23 15:16:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:14,372 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-23 15:16:14,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-23 15:16:14,372 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-07-23 15:16:14,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:14,372 INFO L225 Difference]: With dead ends: 113 [2018-07-23 15:16:14,373 INFO L226 Difference]: Without dead ends: 111 [2018-07-23 15:16:14,373 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:16:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-23 15:16:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-23 15:16:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-23 15:16:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-23 15:16:14,378 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-07-23 15:16:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:14,378 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-23 15:16:14,378 INFO L472 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-23 15:16:14,378 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-23 15:16:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-23 15:16:14,379 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:14,379 INFO L353 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-07-23 15:16:14,379 INFO L414 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:14,380 INFO L82 PathProgramCache]: Analyzing trace with hash -141762868, now seen corresponding path program 107 times [2018-07-23 15:16:14,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:14,671 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:14,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-23 15:16:14,671 INFO L450 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-23 15:16:14,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-23 15:16:14,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:16:14,673 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-07-23 15:16:14,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:14,800 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-07-23 15:16:14,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-23 15:16:14,801 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-07-23 15:16:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:14,801 INFO L225 Difference]: With dead ends: 114 [2018-07-23 15:16:14,801 INFO L226 Difference]: Without dead ends: 112 [2018-07-23 15:16:14,802 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:16:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-23 15:16:14,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-23 15:16:14,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-23 15:16:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-23 15:16:14,806 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-07-23 15:16:14,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:14,806 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-23 15:16:14,806 INFO L472 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-23 15:16:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-23 15:16:14,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-23 15:16:14,810 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:14,810 INFO L353 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-07-23 15:16:14,810 INFO L414 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:14,810 INFO L82 PathProgramCache]: Analyzing trace with hash -99679805, now seen corresponding path program 108 times [2018-07-23 15:16:14,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:15,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:15,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-23 15:16:15,232 INFO L450 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-23 15:16:15,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-23 15:16:15,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:16:15,233 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-07-23 15:16:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:15,317 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-23 15:16:15,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-23 15:16:15,317 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-07-23 15:16:15,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:15,318 INFO L225 Difference]: With dead ends: 115 [2018-07-23 15:16:15,318 INFO L226 Difference]: Without dead ends: 113 [2018-07-23 15:16:15,319 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:16:15,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-23 15:16:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-23 15:16:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-23 15:16:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-23 15:16:15,322 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-07-23 15:16:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:15,322 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-23 15:16:15,322 INFO L472 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-23 15:16:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-23 15:16:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-23 15:16:15,323 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:15,323 INFO L353 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-07-23 15:16:15,323 INFO L414 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:15,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1204895148, now seen corresponding path program 109 times [2018-07-23 15:16:15,324 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:15,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:15,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-23 15:16:15,619 INFO L450 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-23 15:16:15,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-23 15:16:15,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:16:15,620 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-07-23 15:16:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:15,829 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-07-23 15:16:15,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-23 15:16:15,829 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-07-23 15:16:15,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:15,830 INFO L225 Difference]: With dead ends: 116 [2018-07-23 15:16:15,830 INFO L226 Difference]: Without dead ends: 114 [2018-07-23 15:16:15,831 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:16:15,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-23 15:16:15,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-23 15:16:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-23 15:16:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-23 15:16:15,835 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-07-23 15:16:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:15,835 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-23 15:16:15,835 INFO L472 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-23 15:16:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-23 15:16:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-23 15:16:15,836 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:15,836 INFO L353 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-07-23 15:16:15,836 INFO L414 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:15,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1302954269, now seen corresponding path program 110 times [2018-07-23 15:16:15,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:16,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:16,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-23 15:16:16,157 INFO L450 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-23 15:16:16,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-23 15:16:16,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:16:16,159 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-07-23 15:16:16,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:16,220 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-23 15:16:16,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-23 15:16:16,220 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-07-23 15:16:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:16,220 INFO L225 Difference]: With dead ends: 117 [2018-07-23 15:16:16,221 INFO L226 Difference]: Without dead ends: 115 [2018-07-23 15:16:16,221 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:16:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-23 15:16:16,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-23 15:16:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-23 15:16:16,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-23 15:16:16,225 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-07-23 15:16:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:16,225 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-23 15:16:16,225 INFO L472 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-23 15:16:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-23 15:16:16,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-23 15:16:16,226 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:16,226 INFO L353 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-07-23 15:16:16,226 INFO L414 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:16,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1736874868, now seen corresponding path program 111 times [2018-07-23 15:16:16,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:16,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:16,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-23 15:16:16,534 INFO L450 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-23 15:16:16,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-23 15:16:16,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:16:16,535 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-07-23 15:16:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:16,683 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-07-23 15:16:16,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-23 15:16:16,683 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-07-23 15:16:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:16,683 INFO L225 Difference]: With dead ends: 118 [2018-07-23 15:16:16,684 INFO L226 Difference]: Without dead ends: 116 [2018-07-23 15:16:16,684 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:16:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-23 15:16:16,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-23 15:16:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-23 15:16:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-23 15:16:16,687 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-07-23 15:16:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:16,687 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-23 15:16:16,687 INFO L472 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-23 15:16:16,687 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-23 15:16:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-23 15:16:16,688 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:16,688 INFO L353 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-07-23 15:16:16,688 INFO L414 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:16,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1991455747, now seen corresponding path program 112 times [2018-07-23 15:16:16,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:17,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:17,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-23 15:16:17,005 INFO L450 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-23 15:16:17,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-23 15:16:17,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:16:17,006 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-07-23 15:16:17,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:17,103 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-23 15:16:17,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-23 15:16:17,103 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-07-23 15:16:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:17,104 INFO L225 Difference]: With dead ends: 119 [2018-07-23 15:16:17,104 INFO L226 Difference]: Without dead ends: 117 [2018-07-23 15:16:17,105 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:16:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-23 15:16:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-23 15:16:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-23 15:16:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-23 15:16:17,107 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-07-23 15:16:17,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:17,107 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-23 15:16:17,107 INFO L472 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-23 15:16:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-23 15:16:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-23 15:16:17,108 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:17,108 INFO L353 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-07-23 15:16:17,108 INFO L414 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:17,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1605587820, now seen corresponding path program 113 times [2018-07-23 15:16:17,108 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:17,416 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:17,416 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-23 15:16:17,417 INFO L450 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-23 15:16:17,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-23 15:16:17,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:16:17,418 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-07-23 15:16:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:17,540 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-07-23 15:16:17,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-23 15:16:17,540 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-07-23 15:16:17,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:17,540 INFO L225 Difference]: With dead ends: 120 [2018-07-23 15:16:17,540 INFO L226 Difference]: Without dead ends: 118 [2018-07-23 15:16:17,541 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:16:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-23 15:16:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-23 15:16:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-23 15:16:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-23 15:16:17,544 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-07-23 15:16:17,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:17,545 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-23 15:16:17,545 INFO L472 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-23 15:16:17,545 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-23 15:16:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-23 15:16:17,546 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:17,546 INFO L353 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-07-23 15:16:17,546 INFO L414 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:17,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1766383325, now seen corresponding path program 114 times [2018-07-23 15:16:17,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:17,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:17,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-23 15:16:17,870 INFO L450 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-23 15:16:17,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-23 15:16:17,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:16:17,871 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-07-23 15:16:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:17,976 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-23 15:16:17,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-23 15:16:17,976 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-07-23 15:16:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:17,976 INFO L225 Difference]: With dead ends: 121 [2018-07-23 15:16:17,977 INFO L226 Difference]: Without dead ends: 119 [2018-07-23 15:16:17,977 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:16:17,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-23 15:16:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-23 15:16:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-23 15:16:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-23 15:16:17,980 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-07-23 15:16:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:17,981 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-23 15:16:17,981 INFO L472 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-23 15:16:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-23 15:16:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-23 15:16:17,981 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:17,981 INFO L353 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-07-23 15:16:17,982 INFO L414 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:17,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1076693580, now seen corresponding path program 115 times [2018-07-23 15:16:17,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:18,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:18,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-23 15:16:18,306 INFO L450 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-23 15:16:18,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-23 15:16:18,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:16:18,308 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-07-23 15:16:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:18,498 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-07-23 15:16:18,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-23 15:16:18,498 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-07-23 15:16:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:18,499 INFO L225 Difference]: With dead ends: 122 [2018-07-23 15:16:18,499 INFO L226 Difference]: Without dead ends: 120 [2018-07-23 15:16:18,500 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:16:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-23 15:16:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-23 15:16:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-23 15:16:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-23 15:16:18,503 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-07-23 15:16:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:18,504 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-23 15:16:18,504 INFO L472 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-23 15:16:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-23 15:16:18,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-23 15:16:18,505 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:18,506 INFO L353 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-07-23 15:16:18,506 INFO L414 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:18,506 INFO L82 PathProgramCache]: Analyzing trace with hash -982235581, now seen corresponding path program 116 times [2018-07-23 15:16:18,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:18,846 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:18,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-23 15:16:18,846 INFO L450 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-23 15:16:18,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-23 15:16:18,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:16:18,848 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-07-23 15:16:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:18,994 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-23 15:16:18,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-23 15:16:18,994 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-07-23 15:16:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:18,995 INFO L225 Difference]: With dead ends: 123 [2018-07-23 15:16:18,995 INFO L226 Difference]: Without dead ends: 121 [2018-07-23 15:16:18,995 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:16:18,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-23 15:16:18,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-23 15:16:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-23 15:16:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-23 15:16:18,998 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-07-23 15:16:18,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:18,998 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-23 15:16:18,998 INFO L472 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-23 15:16:18,998 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-23 15:16:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 15:16:18,998 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:18,998 INFO L353 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-07-23 15:16:18,999 INFO L414 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:18,999 INFO L82 PathProgramCache]: Analyzing trace with hash -384530132, now seen corresponding path program 117 times [2018-07-23 15:16:18,999 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:19,312 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:19,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-23 15:16:19,312 INFO L450 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-23 15:16:19,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-23 15:16:19,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:16:19,314 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-07-23 15:16:19,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:19,427 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-07-23 15:16:19,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-23 15:16:19,427 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-07-23 15:16:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:19,428 INFO L225 Difference]: With dead ends: 124 [2018-07-23 15:16:19,428 INFO L226 Difference]: Without dead ends: 122 [2018-07-23 15:16:19,429 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:16:19,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-23 15:16:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-23 15:16:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-23 15:16:19,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-23 15:16:19,431 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-07-23 15:16:19,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:19,431 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-23 15:16:19,431 INFO L472 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-23 15:16:19,431 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-23 15:16:19,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-23 15:16:19,432 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:19,432 INFO L353 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-07-23 15:16:19,432 INFO L414 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:19,432 INFO L82 PathProgramCache]: Analyzing trace with hash 964469603, now seen corresponding path program 118 times [2018-07-23 15:16:19,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:19,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:19,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-23 15:16:19,750 INFO L450 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-23 15:16:19,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-23 15:16:19,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:16:19,751 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-07-23 15:16:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:19,857 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-23 15:16:19,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-23 15:16:19,857 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-07-23 15:16:19,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:19,857 INFO L225 Difference]: With dead ends: 125 [2018-07-23 15:16:19,858 INFO L226 Difference]: Without dead ends: 123 [2018-07-23 15:16:19,858 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:16:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-23 15:16:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-23 15:16:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-23 15:16:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-23 15:16:19,860 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-07-23 15:16:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:19,861 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-23 15:16:19,861 INFO L472 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-23 15:16:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-23 15:16:19,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-23 15:16:19,861 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:19,862 INFO L353 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-07-23 15:16:19,862 INFO L414 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:19,862 INFO L82 PathProgramCache]: Analyzing trace with hash -166211572, now seen corresponding path program 119 times [2018-07-23 15:16:19,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:20,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:20,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-23 15:16:20,422 INFO L450 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-23 15:16:20,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-23 15:16:20,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-23 15:16:20,426 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-07-23 15:16:20,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:20,541 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-07-23 15:16:20,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-23 15:16:20,542 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-07-23 15:16:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:20,543 INFO L225 Difference]: With dead ends: 126 [2018-07-23 15:16:20,543 INFO L226 Difference]: Without dead ends: 124 [2018-07-23 15:16:20,544 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-23 15:16:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-23 15:16:20,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-23 15:16:20,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-23 15:16:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-23 15:16:20,549 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-07-23 15:16:20,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:20,549 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-23 15:16:20,549 INFO L472 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-23 15:16:20,549 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-23 15:16:20,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-23 15:16:20,550 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:20,550 INFO L353 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-07-23 15:16:20,550 INFO L414 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:20,551 INFO L82 PathProgramCache]: Analyzing trace with hash -857589629, now seen corresponding path program 120 times [2018-07-23 15:16:20,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:21,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:21,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-23 15:16:21,240 INFO L450 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-23 15:16:21,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-23 15:16:21,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-23 15:16:21,242 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-07-23 15:16:21,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:21,386 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-23 15:16:21,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-23 15:16:21,386 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-07-23 15:16:21,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:21,387 INFO L225 Difference]: With dead ends: 127 [2018-07-23 15:16:21,387 INFO L226 Difference]: Without dead ends: 125 [2018-07-23 15:16:21,387 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-23 15:16:21,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-23 15:16:21,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-23 15:16:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-23 15:16:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-23 15:16:21,391 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-07-23 15:16:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:21,391 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-23 15:16:21,391 INFO L472 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-23 15:16:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-23 15:16:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-23 15:16:21,392 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:21,392 INFO L353 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-07-23 15:16:21,392 INFO L414 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:21,392 INFO L82 PathProgramCache]: Analyzing trace with hash -815472916, now seen corresponding path program 121 times [2018-07-23 15:16:21,392 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:21,691 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:21,691 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-23 15:16:21,691 INFO L450 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-23 15:16:21,692 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-23 15:16:21,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:16:21,693 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-07-23 15:16:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:21,836 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-07-23 15:16:21,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-23 15:16:21,836 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-07-23 15:16:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:21,837 INFO L225 Difference]: With dead ends: 128 [2018-07-23 15:16:21,837 INFO L226 Difference]: Without dead ends: 126 [2018-07-23 15:16:21,838 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:16:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-23 15:16:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-23 15:16:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-23 15:16:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-23 15:16:21,842 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-07-23 15:16:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:21,842 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-23 15:16:21,842 INFO L472 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-23 15:16:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-23 15:16:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-23 15:16:21,843 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:21,843 INFO L353 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-07-23 15:16:21,843 INFO L414 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:21,844 INFO L82 PathProgramCache]: Analyzing trace with hash 490145187, now seen corresponding path program 122 times [2018-07-23 15:16:21,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:22,424 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:22,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-23 15:16:22,424 INFO L450 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-23 15:16:22,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-23 15:16:22,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:16:22,427 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-07-23 15:16:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:22,668 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-23 15:16:22,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-23 15:16:22,668 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-07-23 15:16:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:22,668 INFO L225 Difference]: With dead ends: 129 [2018-07-23 15:16:22,668 INFO L226 Difference]: Without dead ends: 127 [2018-07-23 15:16:22,669 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:16:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-23 15:16:22,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-23 15:16:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-23 15:16:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-23 15:16:22,672 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-07-23 15:16:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:22,672 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-23 15:16:22,672 INFO L472 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-23 15:16:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-23 15:16:22,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-23 15:16:22,672 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:22,673 INFO L353 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-07-23 15:16:22,673 INFO L414 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:22,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1985366580, now seen corresponding path program 123 times [2018-07-23 15:16:22,673 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:23,000 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:23,000 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-23 15:16:23,000 INFO L450 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-23 15:16:23,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-23 15:16:23,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:16:23,002 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-07-23 15:16:23,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:23,121 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-07-23 15:16:23,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-23 15:16:23,121 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-07-23 15:16:23,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:23,121 INFO L225 Difference]: With dead ends: 130 [2018-07-23 15:16:23,121 INFO L226 Difference]: Without dead ends: 128 [2018-07-23 15:16:23,122 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:16:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-23 15:16:23,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-23 15:16:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-23 15:16:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-23 15:16:23,124 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-07-23 15:16:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:23,125 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-23 15:16:23,125 INFO L472 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-23 15:16:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-23 15:16:23,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-23 15:16:23,125 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:23,125 INFO L353 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-07-23 15:16:23,126 INFO L414 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:23,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1416820029, now seen corresponding path program 124 times [2018-07-23 15:16:23,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:23,490 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:23,490 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-23 15:16:23,491 INFO L450 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-23 15:16:23,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-23 15:16:23,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:16:23,492 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-07-23 15:16:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:23,656 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-23 15:16:23,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-23 15:16:23,656 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-07-23 15:16:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:23,657 INFO L225 Difference]: With dead ends: 131 [2018-07-23 15:16:23,657 INFO L226 Difference]: Without dead ends: 129 [2018-07-23 15:16:23,657 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:16:23,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-23 15:16:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-23 15:16:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-23 15:16:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-23 15:16:23,660 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-07-23 15:16:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:23,660 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-23 15:16:23,660 INFO L472 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-23 15:16:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-23 15:16:23,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-23 15:16:23,660 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:23,660 INFO L353 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-07-23 15:16:23,661 INFO L414 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:23,661 INFO L82 PathProgramCache]: Analyzing trace with hash -971746132, now seen corresponding path program 125 times [2018-07-23 15:16:23,661 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:24,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:24,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-23 15:16:24,024 INFO L450 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-23 15:16:24,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-23 15:16:24,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:16:24,025 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-07-23 15:16:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:24,140 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-07-23 15:16:24,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-23 15:16:24,140 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-07-23 15:16:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:24,140 INFO L225 Difference]: With dead ends: 132 [2018-07-23 15:16:24,141 INFO L226 Difference]: Without dead ends: 130 [2018-07-23 15:16:24,141 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:16:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-23 15:16:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-23 15:16:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-23 15:16:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-23 15:16:24,144 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-07-23 15:16:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:24,145 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-23 15:16:24,145 INFO L472 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-23 15:16:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-23 15:16:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-23 15:16:24,145 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:24,146 INFO L353 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-07-23 15:16:24,146 INFO L414 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:24,146 INFO L82 PathProgramCache]: Analyzing trace with hash -59357213, now seen corresponding path program 126 times [2018-07-23 15:16:24,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:24,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:24,497 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-23 15:16:24,497 INFO L450 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-23 15:16:24,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-23 15:16:24,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:16:24,499 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-07-23 15:16:24,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:24,668 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-23 15:16:24,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-23 15:16:24,668 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-07-23 15:16:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:24,669 INFO L225 Difference]: With dead ends: 133 [2018-07-23 15:16:24,669 INFO L226 Difference]: Without dead ends: 131 [2018-07-23 15:16:24,670 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:16:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-23 15:16:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-23 15:16:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-23 15:16:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-23 15:16:24,673 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-07-23 15:16:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:24,673 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-23 15:16:24,673 INFO L472 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-23 15:16:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-23 15:16:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 15:16:24,674 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:24,674 INFO L353 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-07-23 15:16:24,674 INFO L414 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:24,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1840071796, now seen corresponding path program 127 times [2018-07-23 15:16:24,675 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:25,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:25,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-23 15:16:25,043 INFO L450 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-23 15:16:25,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-23 15:16:25,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:16:25,045 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-07-23 15:16:25,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:25,113 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-07-23 15:16:25,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-23 15:16:25,114 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-07-23 15:16:25,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:25,114 INFO L225 Difference]: With dead ends: 134 [2018-07-23 15:16:25,114 INFO L226 Difference]: Without dead ends: 132 [2018-07-23 15:16:25,115 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:16:25,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-23 15:16:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-23 15:16:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-23 15:16:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-23 15:16:25,120 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-07-23 15:16:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:25,120 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-23 15:16:25,120 INFO L472 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-23 15:16:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-23 15:16:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-23 15:16:25,121 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:25,121 INFO L353 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-07-23 15:16:25,122 INFO L414 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:25,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1207649021, now seen corresponding path program 128 times [2018-07-23 15:16:25,122 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:25,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:25,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-23 15:16:25,502 INFO L450 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-23 15:16:25,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-23 15:16:25,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-23 15:16:25,504 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-07-23 15:16:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:25,654 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-23 15:16:25,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-23 15:16:25,655 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-07-23 15:16:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:25,655 INFO L225 Difference]: With dead ends: 135 [2018-07-23 15:16:25,655 INFO L226 Difference]: Without dead ends: 133 [2018-07-23 15:16:25,656 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-23 15:16:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-23 15:16:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-23 15:16:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-23 15:16:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-23 15:16:25,659 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-07-23 15:16:25,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:25,659 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-23 15:16:25,660 INFO L472 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-23 15:16:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-23 15:16:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-23 15:16:25,660 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:25,660 INFO L353 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-07-23 15:16:25,660 INFO L414 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:25,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1217587820, now seen corresponding path program 129 times [2018-07-23 15:16:25,661 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:26,161 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:26,161 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-23 15:16:26,162 INFO L450 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-23 15:16:26,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-23 15:16:26,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:16:26,163 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-07-23 15:16:26,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:26,311 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-07-23 15:16:26,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-23 15:16:26,311 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-07-23 15:16:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:26,311 INFO L225 Difference]: With dead ends: 136 [2018-07-23 15:16:26,312 INFO L226 Difference]: Without dead ends: 134 [2018-07-23 15:16:26,313 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:16:26,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-23 15:16:26,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-23 15:16:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-23 15:16:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-23 15:16:26,316 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-07-23 15:16:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:26,316 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-23 15:16:26,316 INFO L472 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-23 15:16:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-23 15:16:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-23 15:16:26,317 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:26,317 INFO L353 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-07-23 15:16:26,317 INFO L414 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:26,317 INFO L82 PathProgramCache]: Analyzing trace with hash -909481437, now seen corresponding path program 130 times [2018-07-23 15:16:26,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:26,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:26,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-23 15:16:26,904 INFO L450 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-23 15:16:26,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-23 15:16:26,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-23 15:16:26,907 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-07-23 15:16:27,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:27,133 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-23 15:16:27,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-23 15:16:27,133 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-07-23 15:16:27,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:27,134 INFO L225 Difference]: With dead ends: 137 [2018-07-23 15:16:27,134 INFO L226 Difference]: Without dead ends: 135 [2018-07-23 15:16:27,135 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-23 15:16:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-23 15:16:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-23 15:16:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-23 15:16:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-23 15:16:27,139 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-07-23 15:16:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:27,139 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-23 15:16:27,139 INFO L472 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-23 15:16:27,139 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-23 15:16:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-23 15:16:27,140 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:27,140 INFO L353 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-07-23 15:16:27,140 INFO L414 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:27,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1870848332, now seen corresponding path program 131 times [2018-07-23 15:16:27,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:27,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:27,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-23 15:16:27,719 INFO L450 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-23 15:16:27,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-23 15:16:27,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-23 15:16:27,721 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-07-23 15:16:27,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:27,945 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-07-23 15:16:27,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-23 15:16:27,946 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-07-23 15:16:27,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:27,946 INFO L225 Difference]: With dead ends: 138 [2018-07-23 15:16:27,946 INFO L226 Difference]: Without dead ends: 136 [2018-07-23 15:16:27,947 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-23 15:16:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-23 15:16:27,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-23 15:16:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-23 15:16:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-23 15:16:27,950 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-07-23 15:16:27,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:27,950 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-23 15:16:27,950 INFO L472 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-23 15:16:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-23 15:16:27,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-23 15:16:27,951 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:27,951 INFO L353 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-07-23 15:16:27,951 INFO L414 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:27,951 INFO L82 PathProgramCache]: Analyzing trace with hash -2133242045, now seen corresponding path program 132 times [2018-07-23 15:16:27,951 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:28,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:28,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-23 15:16:28,366 INFO L450 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-23 15:16:28,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-23 15:16:28,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-23 15:16:28,368 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-07-23 15:16:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:28,520 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-23 15:16:28,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-23 15:16:28,520 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-07-23 15:16:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:28,521 INFO L225 Difference]: With dead ends: 139 [2018-07-23 15:16:28,521 INFO L226 Difference]: Without dead ends: 137 [2018-07-23 15:16:28,522 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-23 15:16:28,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-23 15:16:28,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-23 15:16:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-23 15:16:28,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-23 15:16:28,524 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-07-23 15:16:28,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:28,524 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-23 15:16:28,524 INFO L472 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-23 15:16:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-23 15:16:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 15:16:28,524 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:28,525 INFO L353 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-07-23 15:16:28,525 INFO L414 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1705992148, now seen corresponding path program 133 times [2018-07-23 15:16:28,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:28,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:28,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-23 15:16:28,898 INFO L450 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-23 15:16:28,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-23 15:16:28,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:16:28,901 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-07-23 15:16:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:29,073 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-07-23 15:16:29,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-23 15:16:29,074 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-07-23 15:16:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:29,074 INFO L225 Difference]: With dead ends: 140 [2018-07-23 15:16:29,074 INFO L226 Difference]: Without dead ends: 138 [2018-07-23 15:16:29,075 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:16:29,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-23 15:16:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-23 15:16:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-23 15:16:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-23 15:16:29,078 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-07-23 15:16:29,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:29,079 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-23 15:16:29,079 INFO L472 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-23 15:16:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-23 15:16:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-23 15:16:29,079 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:29,079 INFO L353 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-07-23 15:16:29,079 INFO L414 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:29,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1346147229, now seen corresponding path program 134 times [2018-07-23 15:16:29,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:29,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:29,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-23 15:16:29,512 INFO L450 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-23 15:16:29,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-23 15:16:29,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-23 15:16:29,514 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-07-23 15:16:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:29,748 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-23 15:16:29,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-23 15:16:29,748 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-07-23 15:16:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:29,749 INFO L225 Difference]: With dead ends: 141 [2018-07-23 15:16:29,749 INFO L226 Difference]: Without dead ends: 139 [2018-07-23 15:16:29,750 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-23 15:16:29,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-23 15:16:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-23 15:16:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-23 15:16:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-23 15:16:29,752 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-07-23 15:16:29,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:29,752 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-23 15:16:29,752 INFO L472 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-23 15:16:29,752 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-23 15:16:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-23 15:16:29,753 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:29,753 INFO L353 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-07-23 15:16:29,753 INFO L414 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:29,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1219110668, now seen corresponding path program 135 times [2018-07-23 15:16:29,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:30,209 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:30,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-23 15:16:30,209 INFO L450 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-23 15:16:30,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-23 15:16:30,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:16:30,211 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-07-23 15:16:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:30,476 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-07-23 15:16:30,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-23 15:16:30,476 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-07-23 15:16:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:30,477 INFO L225 Difference]: With dead ends: 142 [2018-07-23 15:16:30,477 INFO L226 Difference]: Without dead ends: 140 [2018-07-23 15:16:30,478 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:16:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-23 15:16:30,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-23 15:16:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-23 15:16:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-23 15:16:30,481 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-07-23 15:16:30,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:30,481 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-23 15:16:30,481 INFO L472 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-23 15:16:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-23 15:16:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-23 15:16:30,482 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:30,482 INFO L353 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-07-23 15:16:30,482 INFO L414 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:30,483 INFO L82 PathProgramCache]: Analyzing trace with hash -862273149, now seen corresponding path program 136 times [2018-07-23 15:16:30,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:30,988 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:30,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-23 15:16:30,988 INFO L450 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-23 15:16:30,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-23 15:16:30,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-23 15:16:30,990 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-07-23 15:16:31,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:31,088 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-23 15:16:31,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-23 15:16:31,088 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-07-23 15:16:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:31,089 INFO L225 Difference]: With dead ends: 143 [2018-07-23 15:16:31,089 INFO L226 Difference]: Without dead ends: 141 [2018-07-23 15:16:31,089 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-23 15:16:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-23 15:16:31,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-23 15:16:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-23 15:16:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-23 15:16:31,091 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-07-23 15:16:31,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:31,092 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-23 15:16:31,092 INFO L472 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-23 15:16:31,092 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-23 15:16:31,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-23 15:16:31,092 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:31,092 INFO L353 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-07-23 15:16:31,092 INFO L414 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:31,093 INFO L82 PathProgramCache]: Analyzing trace with hash -960662036, now seen corresponding path program 137 times [2018-07-23 15:16:31,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:31,578 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:31,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-23 15:16:31,578 INFO L450 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-23 15:16:31,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-23 15:16:31,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-23 15:16:31,581 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-07-23 15:16:31,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:31,868 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-07-23 15:16:31,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-23 15:16:31,868 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-07-23 15:16:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:31,869 INFO L225 Difference]: With dead ends: 144 [2018-07-23 15:16:31,869 INFO L226 Difference]: Without dead ends: 142 [2018-07-23 15:16:31,870 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-23 15:16:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-23 15:16:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-23 15:16:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-23 15:16:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-23 15:16:31,872 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-07-23 15:16:31,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:31,872 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-23 15:16:31,872 INFO L472 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-23 15:16:31,873 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-23 15:16:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-23 15:16:31,873 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:31,873 INFO L353 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-07-23 15:16:31,873 INFO L414 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:31,874 INFO L82 PathProgramCache]: Analyzing trace with hash 284249763, now seen corresponding path program 138 times [2018-07-23 15:16:31,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:32,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:32,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-23 15:16:32,298 INFO L450 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-23 15:16:32,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-23 15:16:32,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:16:32,300 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-07-23 15:16:32,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:32,578 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-23 15:16:32,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-23 15:16:32,578 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-07-23 15:16:32,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:32,578 INFO L225 Difference]: With dead ends: 145 [2018-07-23 15:16:32,578 INFO L226 Difference]: Without dead ends: 143 [2018-07-23 15:16:32,579 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:16:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-23 15:16:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-23 15:16:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-23 15:16:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-23 15:16:32,581 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-07-23 15:16:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:32,582 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-23 15:16:32,582 INFO L472 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-23 15:16:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-23 15:16:32,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-23 15:16:32,582 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:32,582 INFO L353 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-07-23 15:16:32,582 INFO L414 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:32,583 INFO L82 PathProgramCache]: Analyzing trace with hash 221809868, now seen corresponding path program 139 times [2018-07-23 15:16:32,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:33,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:33,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-23 15:16:33,053 INFO L450 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-23 15:16:33,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-23 15:16:33,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-23 15:16:33,055 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-07-23 15:16:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:33,389 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-07-23 15:16:33,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-23 15:16:33,390 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-07-23 15:16:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:33,390 INFO L225 Difference]: With dead ends: 146 [2018-07-23 15:16:33,390 INFO L226 Difference]: Without dead ends: 144 [2018-07-23 15:16:33,391 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-23 15:16:33,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-23 15:16:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-23 15:16:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-23 15:16:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-23 15:16:33,394 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-07-23 15:16:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:33,394 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-23 15:16:33,394 INFO L472 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-23 15:16:33,394 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-23 15:16:33,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-23 15:16:33,395 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:33,395 INFO L353 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-07-23 15:16:33,395 INFO L414 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:33,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1713826877, now seen corresponding path program 140 times [2018-07-23 15:16:33,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:33,874 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:33,874 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-23 15:16:33,874 INFO L450 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-23 15:16:33,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-23 15:16:33,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-23 15:16:33,877 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-07-23 15:16:34,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:34,103 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-23 15:16:34,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-23 15:16:34,103 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-07-23 15:16:34,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:34,103 INFO L225 Difference]: With dead ends: 147 [2018-07-23 15:16:34,104 INFO L226 Difference]: Without dead ends: 145 [2018-07-23 15:16:34,104 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-23 15:16:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-23 15:16:34,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-23 15:16:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-23 15:16:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-23 15:16:34,107 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-07-23 15:16:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:34,107 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-23 15:16:34,107 INFO L472 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-23 15:16:34,107 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-23 15:16:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 15:16:34,108 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:34,108 INFO L353 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-07-23 15:16:34,108 INFO L414 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:34,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1589023828, now seen corresponding path program 141 times [2018-07-23 15:16:34,108 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:34,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:34,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-23 15:16:34,663 INFO L450 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-23 15:16:34,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-23 15:16:34,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:16:34,666 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-07-23 15:16:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:34,793 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-07-23 15:16:34,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-23 15:16:34,793 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-07-23 15:16:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:34,793 INFO L225 Difference]: With dead ends: 148 [2018-07-23 15:16:34,793 INFO L226 Difference]: Without dead ends: 146 [2018-07-23 15:16:34,794 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:16:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-23 15:16:34,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-23 15:16:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-23 15:16:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-23 15:16:34,797 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-07-23 15:16:34,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:34,797 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-23 15:16:34,797 INFO L472 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-23 15:16:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-23 15:16:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-23 15:16:34,798 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:34,798 INFO L353 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-07-23 15:16:34,798 INFO L414 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:34,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2015096605, now seen corresponding path program 142 times [2018-07-23 15:16:34,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:35,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:35,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-23 15:16:35,516 INFO L450 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-23 15:16:35,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-23 15:16:35,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-23 15:16:35,519 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-07-23 15:16:35,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:35,813 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-23 15:16:35,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-23 15:16:35,813 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-07-23 15:16:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:35,814 INFO L225 Difference]: With dead ends: 149 [2018-07-23 15:16:35,814 INFO L226 Difference]: Without dead ends: 147 [2018-07-23 15:16:35,815 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-23 15:16:35,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-23 15:16:35,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-23 15:16:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-23 15:16:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-23 15:16:35,817 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-07-23 15:16:35,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:35,818 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-23 15:16:35,818 INFO L472 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-23 15:16:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-23 15:16:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-23 15:16:35,818 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:35,818 INFO L353 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-07-23 15:16:35,818 INFO L414 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:35,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1956516492, now seen corresponding path program 143 times [2018-07-23 15:16:35,819 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:36,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:36,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-23 15:16:36,270 INFO L450 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-23 15:16:36,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-23 15:16:36,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-23 15:16:36,272 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-07-23 15:16:36,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:36,538 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-07-23 15:16:36,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-23 15:16:36,538 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-07-23 15:16:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:36,538 INFO L225 Difference]: With dead ends: 150 [2018-07-23 15:16:36,538 INFO L226 Difference]: Without dead ends: 148 [2018-07-23 15:16:36,539 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-23 15:16:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-23 15:16:36,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-23 15:16:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-23 15:16:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-23 15:16:36,541 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-07-23 15:16:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:36,541 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-23 15:16:36,542 INFO L472 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-23 15:16:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-23 15:16:36,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-23 15:16:36,542 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:36,542 INFO L353 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-07-23 15:16:36,542 INFO L414 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:36,542 INFO L82 PathProgramCache]: Analyzing trace with hash 522470915, now seen corresponding path program 144 times [2018-07-23 15:16:36,542 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:36,967 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:36,967 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-23 15:16:36,967 INFO L450 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-23 15:16:36,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-23 15:16:36,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-23 15:16:36,969 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-07-23 15:16:37,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:37,261 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-23 15:16:37,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-23 15:16:37,261 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-07-23 15:16:37,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:37,262 INFO L225 Difference]: With dead ends: 151 [2018-07-23 15:16:37,262 INFO L226 Difference]: Without dead ends: 149 [2018-07-23 15:16:37,263 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-23 15:16:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-23 15:16:37,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-23 15:16:37,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-23 15:16:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-23 15:16:37,265 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-07-23 15:16:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:37,265 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-23 15:16:37,265 INFO L472 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-23 15:16:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-23 15:16:37,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-23 15:16:37,266 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:37,266 INFO L353 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-07-23 15:16:37,266 INFO L414 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:37,266 INFO L82 PathProgramCache]: Analyzing trace with hash -983269012, now seen corresponding path program 145 times [2018-07-23 15:16:37,266 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:37,772 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:37,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-23 15:16:37,772 INFO L450 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-23 15:16:37,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-23 15:16:37,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:16:37,774 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-07-23 15:16:38,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:38,097 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-07-23 15:16:38,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-23 15:16:38,097 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-07-23 15:16:38,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:38,097 INFO L225 Difference]: With dead ends: 152 [2018-07-23 15:16:38,097 INFO L226 Difference]: Without dead ends: 150 [2018-07-23 15:16:38,098 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:16:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-23 15:16:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-23 15:16:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-23 15:16:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-23 15:16:38,101 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-07-23 15:16:38,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:38,101 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-23 15:16:38,101 INFO L472 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-23 15:16:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-23 15:16:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-23 15:16:38,102 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:38,102 INFO L353 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-07-23 15:16:38,102 INFO L414 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:38,102 INFO L82 PathProgramCache]: Analyzing trace with hash -416566493, now seen corresponding path program 146 times [2018-07-23 15:16:38,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:38,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:38,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-23 15:16:38,575 INFO L450 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-23 15:16:38,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-23 15:16:38,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-23 15:16:38,577 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-07-23 15:16:38,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:38,856 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-23 15:16:38,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-23 15:16:38,856 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-07-23 15:16:38,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:38,856 INFO L225 Difference]: With dead ends: 153 [2018-07-23 15:16:38,856 INFO L226 Difference]: Without dead ends: 151 [2018-07-23 15:16:38,858 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-23 15:16:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-23 15:16:38,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-23 15:16:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-23 15:16:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-23 15:16:38,861 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-07-23 15:16:38,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:38,861 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-23 15:16:38,861 INFO L472 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-23 15:16:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-23 15:16:38,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-23 15:16:38,862 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:38,862 INFO L353 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-07-23 15:16:38,862 INFO L414 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:38,863 INFO L82 PathProgramCache]: Analyzing trace with hash -28657588, now seen corresponding path program 147 times [2018-07-23 15:16:38,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:39,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:39,422 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-23 15:16:39,422 INFO L450 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-23 15:16:39,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-23 15:16:39,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:16:39,424 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-07-23 15:16:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:39,786 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-07-23 15:16:39,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-23 15:16:39,786 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-07-23 15:16:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:39,787 INFO L225 Difference]: With dead ends: 154 [2018-07-23 15:16:39,787 INFO L226 Difference]: Without dead ends: 152 [2018-07-23 15:16:39,788 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:16:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-23 15:16:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-23 15:16:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-23 15:16:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-23 15:16:39,791 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-07-23 15:16:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:39,791 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-23 15:16:39,791 INFO L472 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-23 15:16:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-23 15:16:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-23 15:16:39,792 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:39,792 INFO L353 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-07-23 15:16:39,792 INFO L414 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:39,792 INFO L82 PathProgramCache]: Analyzing trace with hash -888383421, now seen corresponding path program 148 times [2018-07-23 15:16:39,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:40,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:40,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-23 15:16:40,280 INFO L450 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-23 15:16:40,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-23 15:16:40,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-23 15:16:40,282 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-07-23 15:16:40,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:40,615 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-23 15:16:40,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-23 15:16:40,615 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-07-23 15:16:40,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:40,616 INFO L225 Difference]: With dead ends: 155 [2018-07-23 15:16:40,616 INFO L226 Difference]: Without dead ends: 153 [2018-07-23 15:16:40,617 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-23 15:16:40,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-23 15:16:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-23 15:16:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-23 15:16:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-23 15:16:40,619 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-07-23 15:16:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:40,619 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-23 15:16:40,620 INFO L472 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-23 15:16:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-23 15:16:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-23 15:16:40,620 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:40,620 INFO L353 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-07-23 15:16:40,620 INFO L414 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:40,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1770080468, now seen corresponding path program 149 times [2018-07-23 15:16:40,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:41,207 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:41,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-23 15:16:41,207 INFO L450 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-23 15:16:41,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-23 15:16:41,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-23 15:16:41,210 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-07-23 15:16:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:41,654 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-07-23 15:16:41,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-23 15:16:41,654 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-07-23 15:16:41,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:41,655 INFO L225 Difference]: With dead ends: 156 [2018-07-23 15:16:41,655 INFO L226 Difference]: Without dead ends: 154 [2018-07-23 15:16:41,656 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-23 15:16:41,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-23 15:16:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-23 15:16:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-23 15:16:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-23 15:16:41,659 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-07-23 15:16:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:41,659 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-23 15:16:41,659 INFO L472 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-23 15:16:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-23 15:16:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-23 15:16:41,660 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:41,660 INFO L353 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-07-23 15:16:41,660 INFO L414 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:41,661 INFO L82 PathProgramCache]: Analyzing trace with hash 962082147, now seen corresponding path program 150 times [2018-07-23 15:16:41,661 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:42,204 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:42,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-23 15:16:42,205 INFO L450 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-23 15:16:42,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-23 15:16:42,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-23 15:16:42,207 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-07-23 15:16:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:42,682 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-23 15:16:42,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-23 15:16:42,683 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-07-23 15:16:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:42,683 INFO L225 Difference]: With dead ends: 157 [2018-07-23 15:16:42,683 INFO L226 Difference]: Without dead ends: 155 [2018-07-23 15:16:42,685 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-23 15:16:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-23 15:16:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-23 15:16:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-23 15:16:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-23 15:16:42,688 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-07-23 15:16:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:42,688 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-23 15:16:42,688 INFO L472 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-23 15:16:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-23 15:16:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-23 15:16:42,689 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:42,689 INFO L353 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-07-23 15:16:42,689 INFO L414 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash -240222708, now seen corresponding path program 151 times [2018-07-23 15:16:42,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:43,254 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:43,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-23 15:16:43,254 INFO L450 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-23 15:16:43,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-23 15:16:43,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:16:43,257 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-07-23 15:16:43,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:43,705 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-07-23 15:16:43,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-23 15:16:43,706 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-07-23 15:16:43,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:43,706 INFO L225 Difference]: With dead ends: 158 [2018-07-23 15:16:43,706 INFO L226 Difference]: Without dead ends: 156 [2018-07-23 15:16:43,707 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:16:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-23 15:16:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-23 15:16:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-23 15:16:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-23 15:16:43,710 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-07-23 15:16:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:43,710 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-23 15:16:43,710 INFO L472 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-23 15:16:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-23 15:16:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-23 15:16:43,710 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:43,710 INFO L353 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-07-23 15:16:43,711 INFO L414 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:43,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1143032451, now seen corresponding path program 152 times [2018-07-23 15:16:43,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:44,377 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:44,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-23 15:16:44,377 INFO L450 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-23 15:16:44,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-23 15:16:44,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-23 15:16:44,379 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-07-23 15:16:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:44,804 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-23 15:16:44,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-23 15:16:44,804 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-07-23 15:16:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:44,804 INFO L225 Difference]: With dead ends: 159 [2018-07-23 15:16:44,805 INFO L226 Difference]: Without dead ends: 157 [2018-07-23 15:16:44,805 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-23 15:16:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-23 15:16:44,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-23 15:16:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-23 15:16:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-23 15:16:44,808 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-07-23 15:16:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:44,808 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-23 15:16:44,809 INFO L472 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-23 15:16:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-23 15:16:44,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-23 15:16:44,809 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:44,809 INFO L353 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-07-23 15:16:44,810 INFO L414 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:44,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1074269420, now seen corresponding path program 153 times [2018-07-23 15:16:44,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:45,364 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:45,364 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-23 15:16:45,365 INFO L450 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-23 15:16:45,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-23 15:16:45,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:16:45,367 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-07-23 15:16:45,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:45,797 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-07-23 15:16:45,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-23 15:16:45,797 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-07-23 15:16:45,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:45,797 INFO L225 Difference]: With dead ends: 160 [2018-07-23 15:16:45,797 INFO L226 Difference]: Without dead ends: 158 [2018-07-23 15:16:45,798 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:16:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-23 15:16:45,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-23 15:16:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-23 15:16:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-23 15:16:45,801 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-07-23 15:16:45,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:45,801 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-23 15:16:45,801 INFO L472 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-23 15:16:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-23 15:16:45,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-23 15:16:45,802 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:45,802 INFO L353 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-07-23 15:16:45,802 INFO L414 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:45,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1057384541, now seen corresponding path program 154 times [2018-07-23 15:16:45,803 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:46,372 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:46,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-23 15:16:46,373 INFO L450 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-23 15:16:46,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-23 15:16:46,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-23 15:16:46,376 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-07-23 15:16:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:46,835 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-23 15:16:46,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-23 15:16:46,835 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-07-23 15:16:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:46,836 INFO L225 Difference]: With dead ends: 161 [2018-07-23 15:16:46,836 INFO L226 Difference]: Without dead ends: 159 [2018-07-23 15:16:46,837 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-23 15:16:46,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-23 15:16:46,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-23 15:16:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-23 15:16:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-23 15:16:46,840 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-07-23 15:16:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:46,840 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-23 15:16:46,841 INFO L472 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-23 15:16:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-23 15:16:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-23 15:16:46,841 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:46,841 INFO L353 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-07-23 15:16:46,842 INFO L414 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:46,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1580819404, now seen corresponding path program 155 times [2018-07-23 15:16:46,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:47,491 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:47,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-23 15:16:47,491 INFO L450 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-23 15:16:47,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-23 15:16:47,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-23 15:16:47,494 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-07-23 15:16:47,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:47,794 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-07-23 15:16:47,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-23 15:16:47,794 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-07-23 15:16:47,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:47,794 INFO L225 Difference]: With dead ends: 162 [2018-07-23 15:16:47,794 INFO L226 Difference]: Without dead ends: 160 [2018-07-23 15:16:47,796 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-23 15:16:47,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-23 15:16:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-23 15:16:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-23 15:16:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-23 15:16:47,799 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-07-23 15:16:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:47,799 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-23 15:16:47,799 INFO L472 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-23 15:16:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-23 15:16:47,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-23 15:16:47,800 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:47,800 INFO L353 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-07-23 15:16:47,800 INFO L414 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:47,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1760763075, now seen corresponding path program 156 times [2018-07-23 15:16:47,800 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:48,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:48,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-23 15:16:48,408 INFO L450 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-23 15:16:48,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-23 15:16:48,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-23 15:16:48,411 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-07-23 15:16:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:48,572 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-23 15:16:48,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-23 15:16:48,572 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-07-23 15:16:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:48,573 INFO L225 Difference]: With dead ends: 163 [2018-07-23 15:16:48,573 INFO L226 Difference]: Without dead ends: 161 [2018-07-23 15:16:48,574 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-23 15:16:48,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-23 15:16:48,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-23 15:16:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-23 15:16:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-23 15:16:48,576 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-07-23 15:16:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:48,576 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-23 15:16:48,577 INFO L472 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-23 15:16:48,577 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-23 15:16:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-23 15:16:48,577 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:48,577 INFO L353 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-07-23 15:16:48,577 INFO L414 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:48,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1250917716, now seen corresponding path program 157 times [2018-07-23 15:16:48,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:49,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:49,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-23 15:16:49,199 INFO L450 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-23 15:16:49,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-23 15:16:49,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:16:49,202 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-07-23 15:16:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:49,479 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-07-23 15:16:49,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-23 15:16:49,479 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-07-23 15:16:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:49,479 INFO L225 Difference]: With dead ends: 164 [2018-07-23 15:16:49,479 INFO L226 Difference]: Without dead ends: 162 [2018-07-23 15:16:49,480 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:16:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-23 15:16:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-23 15:16:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-23 15:16:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-23 15:16:49,483 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-07-23 15:16:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:49,483 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-23 15:16:49,483 INFO L472 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-23 15:16:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-23 15:16:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-23 15:16:49,483 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:49,483 INFO L353 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-07-23 15:16:49,484 INFO L414 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:49,484 INFO L82 PathProgramCache]: Analyzing trace with hash -123741725, now seen corresponding path program 158 times [2018-07-23 15:16:49,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:50,073 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:50,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-23 15:16:50,074 INFO L450 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-23 15:16:50,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-23 15:16:50,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-23 15:16:50,076 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-07-23 15:16:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:50,621 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-23 15:16:50,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-23 15:16:50,622 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-07-23 15:16:50,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:50,622 INFO L225 Difference]: With dead ends: 165 [2018-07-23 15:16:50,622 INFO L226 Difference]: Without dead ends: 163 [2018-07-23 15:16:50,623 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-23 15:16:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-23 15:16:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-23 15:16:50,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-23 15:16:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-23 15:16:50,626 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-07-23 15:16:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:50,626 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-23 15:16:50,626 INFO L472 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-23 15:16:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-23 15:16:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 15:16:50,627 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:50,627 INFO L353 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-07-23 15:16:50,627 INFO L414 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:50,627 INFO L82 PathProgramCache]: Analyzing trace with hash 458975628, now seen corresponding path program 159 times [2018-07-23 15:16:50,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:51,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:51,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-23 15:16:51,239 INFO L450 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-23 15:16:51,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-23 15:16:51,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-23 15:16:51,242 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-07-23 15:16:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:51,809 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-07-23 15:16:51,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-23 15:16:51,809 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-07-23 15:16:51,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:51,810 INFO L225 Difference]: With dead ends: 166 [2018-07-23 15:16:51,810 INFO L226 Difference]: Without dead ends: 164 [2018-07-23 15:16:51,811 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-23 15:16:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-23 15:16:51,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-23 15:16:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-23 15:16:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-23 15:16:51,814 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-07-23 15:16:51,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:51,814 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-23 15:16:51,815 INFO L472 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-23 15:16:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-23 15:16:51,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-23 15:16:51,815 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:51,816 INFO L353 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-07-23 15:16:51,816 INFO L414 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:51,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1343344387, now seen corresponding path program 160 times [2018-07-23 15:16:51,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:52,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:52,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-23 15:16:52,477 INFO L450 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-23 15:16:52,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-23 15:16:52,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-23 15:16:52,479 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-07-23 15:16:53,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:53,010 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-23 15:16:53,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-23 15:16:53,010 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-07-23 15:16:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:53,010 INFO L225 Difference]: With dead ends: 167 [2018-07-23 15:16:53,010 INFO L226 Difference]: Without dead ends: 165 [2018-07-23 15:16:53,012 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-23 15:16:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-23 15:16:53,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-23 15:16:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-23 15:16:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-23 15:16:53,014 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-07-23 15:16:53,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:53,014 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-23 15:16:53,014 INFO L472 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-23 15:16:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-23 15:16:53,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-23 15:16:53,015 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:53,015 INFO L353 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-07-23 15:16:53,015 INFO L414 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:53,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1305995156, now seen corresponding path program 161 times [2018-07-23 15:16:53,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:53,707 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:53,707 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-23 15:16:53,708 INFO L450 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-23 15:16:53,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-23 15:16:53,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-23 15:16:53,711 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-07-23 15:16:53,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:53,921 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-07-23 15:16:53,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-23 15:16:53,921 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-07-23 15:16:53,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:53,922 INFO L225 Difference]: With dead ends: 168 [2018-07-23 15:16:53,922 INFO L226 Difference]: Without dead ends: 166 [2018-07-23 15:16:53,922 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-23 15:16:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-23 15:16:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-23 15:16:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-23 15:16:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-23 15:16:53,926 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-07-23 15:16:53,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:53,926 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-23 15:16:53,926 INFO L472 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-23 15:16:53,926 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-23 15:16:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-23 15:16:53,927 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:53,927 INFO L353 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-07-23 15:16:53,927 INFO L414 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:53,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1831142365, now seen corresponding path program 162 times [2018-07-23 15:16:53,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:54,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:54,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-23 15:16:54,679 INFO L450 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-23 15:16:54,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-23 15:16:54,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-23 15:16:54,681 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-07-23 15:16:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:54,972 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-23 15:16:54,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-23 15:16:54,972 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-07-23 15:16:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:54,973 INFO L225 Difference]: With dead ends: 169 [2018-07-23 15:16:54,973 INFO L226 Difference]: Without dead ends: 167 [2018-07-23 15:16:54,974 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-23 15:16:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-23 15:16:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-23 15:16:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-23 15:16:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-23 15:16:54,976 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-07-23 15:16:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:54,976 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-23 15:16:54,976 INFO L472 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-23 15:16:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-23 15:16:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-23 15:16:54,976 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:54,977 INFO L353 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-07-23 15:16:54,977 INFO L414 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:54,977 INFO L82 PathProgramCache]: Analyzing trace with hash -930836660, now seen corresponding path program 163 times [2018-07-23 15:16:54,977 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:55,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:55,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-23 15:16:55,524 INFO L450 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-23 15:16:55,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-23 15:16:55,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:16:55,526 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-07-23 15:16:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:55,997 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-07-23 15:16:55,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-23 15:16:55,997 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-07-23 15:16:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:55,998 INFO L225 Difference]: With dead ends: 170 [2018-07-23 15:16:55,998 INFO L226 Difference]: Without dead ends: 168 [2018-07-23 15:16:55,999 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:16:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-23 15:16:56,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-23 15:16:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-23 15:16:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-23 15:16:56,001 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-07-23 15:16:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:56,001 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-23 15:16:56,001 INFO L472 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-23 15:16:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-23 15:16:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-23 15:16:56,002 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:56,002 INFO L353 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-07-23 15:16:56,002 INFO L414 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:56,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1208836419, now seen corresponding path program 164 times [2018-07-23 15:16:56,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:56,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:56,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-23 15:16:56,606 INFO L450 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-23 15:16:56,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-23 15:16:56,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-23 15:16:56,609 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-07-23 15:16:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:57,111 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-23 15:16:57,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-23 15:16:57,112 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-07-23 15:16:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:57,112 INFO L225 Difference]: With dead ends: 171 [2018-07-23 15:16:57,112 INFO L226 Difference]: Without dead ends: 169 [2018-07-23 15:16:57,114 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-23 15:16:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-23 15:16:57,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-23 15:16:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-23 15:16:57,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-23 15:16:57,116 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-07-23 15:16:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:57,117 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-23 15:16:57,117 INFO L472 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-23 15:16:57,117 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-23 15:16:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-23 15:16:57,117 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:57,117 INFO L353 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-07-23 15:16:57,117 INFO L414 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:57,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1180774868, now seen corresponding path program 165 times [2018-07-23 15:16:57,118 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:57,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:57,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-23 15:16:57,806 INFO L450 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-23 15:16:57,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-23 15:16:57,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:16:57,809 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-07-23 15:16:58,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:58,053 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-07-23 15:16:58,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-23 15:16:58,053 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-07-23 15:16:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:58,054 INFO L225 Difference]: With dead ends: 172 [2018-07-23 15:16:58,054 INFO L226 Difference]: Without dead ends: 170 [2018-07-23 15:16:58,055 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:16:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-23 15:16:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-23 15:16:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-23 15:16:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-23 15:16:58,058 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-07-23 15:16:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:58,059 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-23 15:16:58,059 INFO L472 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-23 15:16:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-23 15:16:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-23 15:16:58,059 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:58,059 INFO L353 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-07-23 15:16:58,060 INFO L414 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:58,060 INFO L82 PathProgramCache]: Analyzing trace with hash 2050686563, now seen corresponding path program 166 times [2018-07-23 15:16:58,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:58,820 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:58,820 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-23 15:16:58,821 INFO L450 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-23 15:16:58,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-23 15:16:58,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:16:58,823 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-07-23 15:16:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:59,501 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-23 15:16:59,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-23 15:16:59,502 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-07-23 15:16:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:59,502 INFO L225 Difference]: With dead ends: 173 [2018-07-23 15:16:59,502 INFO L226 Difference]: Without dead ends: 171 [2018-07-23 15:16:59,503 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:16:59,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-23 15:16:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-23 15:16:59,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-23 15:16:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-23 15:16:59,506 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-07-23 15:16:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:59,506 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-23 15:16:59,506 INFO L472 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-23 15:16:59,506 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-23 15:16:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-23 15:16:59,506 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:59,507 INFO L353 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-07-23 15:16:59,507 INFO L414 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:16:59,507 INFO L82 PathProgramCache]: Analyzing trace with hash -853224180, now seen corresponding path program 167 times [2018-07-23 15:16:59,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:00,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:00,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-23 15:17:00,182 INFO L450 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-23 15:17:00,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-23 15:17:00,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-23 15:17:00,185 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-07-23 15:17:00,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:00,725 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-07-23 15:17:00,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-23 15:17:00,725 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-07-23 15:17:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:00,725 INFO L225 Difference]: With dead ends: 174 [2018-07-23 15:17:00,725 INFO L226 Difference]: Without dead ends: 172 [2018-07-23 15:17:00,727 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-23 15:17:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-23 15:17:00,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-23 15:17:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-23 15:17:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-23 15:17:00,730 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-07-23 15:17:00,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:00,730 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-23 15:17:00,730 INFO L472 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-23 15:17:00,730 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-23 15:17:00,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-23 15:17:00,731 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:00,731 INFO L353 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-07-23 15:17:00,731 INFO L414 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:00,731 INFO L82 PathProgramCache]: Analyzing trace with hash -680143997, now seen corresponding path program 168 times [2018-07-23 15:17:00,732 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:01,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:01,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-23 15:17:01,421 INFO L450 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-23 15:17:01,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-23 15:17:01,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-23 15:17:01,424 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-07-23 15:17:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:01,748 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-23 15:17:01,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-23 15:17:01,748 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-07-23 15:17:01,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:01,749 INFO L225 Difference]: With dead ends: 175 [2018-07-23 15:17:01,749 INFO L226 Difference]: Without dead ends: 173 [2018-07-23 15:17:01,750 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-23 15:17:01,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-23 15:17:01,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-23 15:17:01,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-23 15:17:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-23 15:17:01,752 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-07-23 15:17:01,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:01,753 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-23 15:17:01,753 INFO L472 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-23 15:17:01,753 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-23 15:17:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-23 15:17:01,753 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:01,753 INFO L353 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-07-23 15:17:01,753 INFO L414 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:01,754 INFO L82 PathProgramCache]: Analyzing trace with hash 390374380, now seen corresponding path program 169 times [2018-07-23 15:17:01,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:02,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:02,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-23 15:17:02,450 INFO L450 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-23 15:17:02,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-23 15:17:02,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:17:02,453 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-07-23 15:17:03,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:03,201 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-07-23 15:17:03,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-23 15:17:03,202 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-07-23 15:17:03,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:03,202 INFO L225 Difference]: With dead ends: 176 [2018-07-23 15:17:03,202 INFO L226 Difference]: Without dead ends: 174 [2018-07-23 15:17:03,204 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:17:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-23 15:17:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-23 15:17:03,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-23 15:17:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-23 15:17:03,206 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-07-23 15:17:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:03,206 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-23 15:17:03,206 INFO L472 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-23 15:17:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-23 15:17:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-23 15:17:03,207 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:03,207 INFO L353 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-07-23 15:17:03,207 INFO L414 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:03,207 INFO L82 PathProgramCache]: Analyzing trace with hash -783294301, now seen corresponding path program 170 times [2018-07-23 15:17:03,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:03,934 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:03,935 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-23 15:17:03,935 INFO L450 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-23 15:17:03,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-23 15:17:03,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:17:03,938 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-07-23 15:17:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:04,188 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-23 15:17:04,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-23 15:17:04,188 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-07-23 15:17:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:04,189 INFO L225 Difference]: With dead ends: 177 [2018-07-23 15:17:04,189 INFO L226 Difference]: Without dead ends: 175 [2018-07-23 15:17:04,190 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:17:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-23 15:17:04,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-23 15:17:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-23 15:17:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-23 15:17:04,194 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-07-23 15:17:04,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:04,194 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-23 15:17:04,194 INFO L472 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-23 15:17:04,194 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-23 15:17:04,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-23 15:17:04,195 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:04,195 INFO L353 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-07-23 15:17:04,195 INFO L414 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:04,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1487682252, now seen corresponding path program 171 times [2018-07-23 15:17:04,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:04,902 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:04,902 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-23 15:17:04,902 INFO L450 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-23 15:17:04,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-23 15:17:04,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:17:04,906 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-07-23 15:17:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:05,635 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-07-23 15:17:05,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-23 15:17:05,635 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-07-23 15:17:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:05,635 INFO L225 Difference]: With dead ends: 178 [2018-07-23 15:17:05,636 INFO L226 Difference]: Without dead ends: 176 [2018-07-23 15:17:05,637 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:17:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-23 15:17:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-23 15:17:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-23 15:17:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-23 15:17:05,640 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-07-23 15:17:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:05,641 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-23 15:17:05,641 INFO L472 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-23 15:17:05,641 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-23 15:17:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-23 15:17:05,642 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:05,642 INFO L353 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-07-23 15:17:05,642 INFO L414 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:05,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1126488637, now seen corresponding path program 172 times [2018-07-23 15:17:05,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:06,709 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:06,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-23 15:17:06,709 INFO L450 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-23 15:17:06,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-23 15:17:06,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-23 15:17:06,712 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-07-23 15:17:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:07,077 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-23 15:17:07,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-23 15:17:07,078 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-07-23 15:17:07,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:07,078 INFO L225 Difference]: With dead ends: 179 [2018-07-23 15:17:07,078 INFO L226 Difference]: Without dead ends: 177 [2018-07-23 15:17:07,080 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-23 15:17:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-23 15:17:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-23 15:17:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-23 15:17:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-23 15:17:07,082 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-07-23 15:17:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:07,083 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-23 15:17:07,083 INFO L472 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-23 15:17:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-23 15:17:07,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-23 15:17:07,084 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:07,084 INFO L353 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-07-23 15:17:07,084 INFO L414 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:07,084 INFO L82 PathProgramCache]: Analyzing trace with hash -561407572, now seen corresponding path program 173 times [2018-07-23 15:17:07,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:07,824 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:07,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-23 15:17:07,824 INFO L450 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-23 15:17:07,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-23 15:17:07,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-23 15:17:07,829 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-07-23 15:17:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:08,463 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-07-23 15:17:08,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-23 15:17:08,463 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-07-23 15:17:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:08,463 INFO L225 Difference]: With dead ends: 180 [2018-07-23 15:17:08,463 INFO L226 Difference]: Without dead ends: 178 [2018-07-23 15:17:08,465 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-23 15:17:08,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-23 15:17:08,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-23 15:17:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-23 15:17:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-23 15:17:08,467 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-07-23 15:17:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:08,467 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-23 15:17:08,467 INFO L472 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-23 15:17:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-23 15:17:08,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-23 15:17:08,468 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:08,468 INFO L353 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-07-23 15:17:08,468 INFO L414 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash -223763741, now seen corresponding path program 174 times [2018-07-23 15:17:08,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:09,235 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:09,235 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-23 15:17:09,235 INFO L450 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-23 15:17:09,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-23 15:17:09,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:17:09,237 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-07-23 15:17:09,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:09,792 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-23 15:17:09,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-23 15:17:09,792 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-07-23 15:17:09,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:09,792 INFO L225 Difference]: With dead ends: 181 [2018-07-23 15:17:09,792 INFO L226 Difference]: Without dead ends: 179 [2018-07-23 15:17:09,793 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:17:09,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-23 15:17:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-23 15:17:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-23 15:17:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-23 15:17:09,795 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-07-23 15:17:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:09,796 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-23 15:17:09,796 INFO L472 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-23 15:17:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-23 15:17:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-23 15:17:09,796 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:09,796 INFO L353 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-07-23 15:17:09,796 INFO L414 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:09,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1653260428, now seen corresponding path program 175 times [2018-07-23 15:17:09,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:10,544 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:10,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-23 15:17:10,544 INFO L450 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-23 15:17:10,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-23 15:17:10,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:17:10,548 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-07-23 15:17:11,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:11,186 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-07-23 15:17:11,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-23 15:17:11,186 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-07-23 15:17:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:11,186 INFO L225 Difference]: With dead ends: 182 [2018-07-23 15:17:11,186 INFO L226 Difference]: Without dead ends: 180 [2018-07-23 15:17:11,188 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:17:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-23 15:17:11,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-23 15:17:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-23 15:17:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-23 15:17:11,191 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-07-23 15:17:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:11,191 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-23 15:17:11,191 INFO L472 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-23 15:17:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-23 15:17:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-23 15:17:11,191 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:11,191 INFO L353 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-07-23 15:17:11,192 INFO L414 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:11,192 INFO L82 PathProgramCache]: Analyzing trace with hash -288532477, now seen corresponding path program 176 times [2018-07-23 15:17:11,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:11,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:11,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-23 15:17:11,961 INFO L450 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-23 15:17:11,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-23 15:17:11,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-23 15:17:11,965 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-07-23 15:17:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:12,529 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-23 15:17:12,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-23 15:17:12,529 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-07-23 15:17:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:12,530 INFO L225 Difference]: With dead ends: 183 [2018-07-23 15:17:12,530 INFO L226 Difference]: Without dead ends: 181 [2018-07-23 15:17:12,531 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-23 15:17:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-23 15:17:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-23 15:17:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-23 15:17:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-23 15:17:12,534 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-07-23 15:17:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:12,534 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-23 15:17:12,534 INFO L472 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-23 15:17:12,534 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-23 15:17:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-23 15:17:12,535 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:12,535 INFO L353 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-07-23 15:17:12,535 INFO L414 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:12,535 INFO L82 PathProgramCache]: Analyzing trace with hash -354570388, now seen corresponding path program 177 times [2018-07-23 15:17:12,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:13,348 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:13,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-23 15:17:13,348 INFO L450 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-23 15:17:13,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-23 15:17:13,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:17:13,352 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-07-23 15:17:14,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:14,185 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-07-23 15:17:14,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-23 15:17:14,185 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-07-23 15:17:14,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:14,185 INFO L225 Difference]: With dead ends: 184 [2018-07-23 15:17:14,185 INFO L226 Difference]: Without dead ends: 182 [2018-07-23 15:17:14,187 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:17:14,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-23 15:17:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-23 15:17:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-23 15:17:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-23 15:17:14,190 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-07-23 15:17:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:14,190 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-23 15:17:14,190 INFO L472 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-23 15:17:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-23 15:17:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-23 15:17:14,191 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:14,191 INFO L353 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-07-23 15:17:14,191 INFO L414 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:14,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1893221667, now seen corresponding path program 178 times [2018-07-23 15:17:14,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:14,993 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:14,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-23 15:17:14,993 INFO L450 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-23 15:17:14,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-23 15:17:14,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-23 15:17:14,995 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-07-23 15:17:15,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:15,328 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-23 15:17:15,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-23 15:17:15,328 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-07-23 15:17:15,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:15,329 INFO L225 Difference]: With dead ends: 185 [2018-07-23 15:17:15,329 INFO L226 Difference]: Without dead ends: 183 [2018-07-23 15:17:15,330 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-23 15:17:15,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-23 15:17:15,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-23 15:17:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-23 15:17:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-23 15:17:15,332 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-07-23 15:17:15,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:15,332 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-23 15:17:15,333 INFO L472 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-23 15:17:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-23 15:17:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-23 15:17:15,333 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:15,333 INFO L353 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-07-23 15:17:15,333 INFO L414 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:15,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1439668660, now seen corresponding path program 179 times [2018-07-23 15:17:15,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:16,098 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:16,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-23 15:17:16,098 INFO L450 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-23 15:17:16,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-23 15:17:16,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-23 15:17:16,102 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-07-23 15:17:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:17,063 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-07-23 15:17:17,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-23 15:17:17,064 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-07-23 15:17:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:17,064 INFO L225 Difference]: With dead ends: 186 [2018-07-23 15:17:17,064 INFO L226 Difference]: Without dead ends: 184 [2018-07-23 15:17:17,066 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-23 15:17:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-23 15:17:17,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-23 15:17:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-23 15:17:17,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-23 15:17:17,069 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-07-23 15:17:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:17,070 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-23 15:17:17,070 INFO L472 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-23 15:17:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-23 15:17:17,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-23 15:17:17,071 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:17,071 INFO L353 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-07-23 15:17:17,071 INFO L414 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:17,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1680053693, now seen corresponding path program 180 times [2018-07-23 15:17:17,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:17,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:17,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-23 15:17:17,864 INFO L450 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-23 15:17:17,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-23 15:17:17,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-23 15:17:17,867 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-07-23 15:17:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:18,164 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-23 15:17:18,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-23 15:17:18,164 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-07-23 15:17:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:18,164 INFO L225 Difference]: With dead ends: 187 [2018-07-23 15:17:18,165 INFO L226 Difference]: Without dead ends: 185 [2018-07-23 15:17:18,166 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-23 15:17:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-23 15:17:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-23 15:17:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-23 15:17:18,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-23 15:17:18,170 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-07-23 15:17:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:18,170 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-23 15:17:18,170 INFO L472 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-23 15:17:18,170 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-23 15:17:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-23 15:17:18,171 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:18,171 INFO L353 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-07-23 15:17:18,171 INFO L414 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:18,171 INFO L82 PathProgramCache]: Analyzing trace with hash -542055124, now seen corresponding path program 181 times [2018-07-23 15:17:18,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:18,937 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:18,937 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-23 15:17:18,937 INFO L450 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-23 15:17:18,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-23 15:17:18,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:17:18,941 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-07-23 15:17:19,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:19,761 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-07-23 15:17:19,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-23 15:17:19,761 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-07-23 15:17:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:19,762 INFO L225 Difference]: With dead ends: 188 [2018-07-23 15:17:19,762 INFO L226 Difference]: Without dead ends: 186 [2018-07-23 15:17:19,764 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:17:19,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-23 15:17:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-23 15:17:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-23 15:17:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-23 15:17:19,767 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-07-23 15:17:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:19,767 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-23 15:17:19,767 INFO L472 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-23 15:17:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-23 15:17:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-23 15:17:19,768 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:19,768 INFO L353 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-07-23 15:17:19,769 INFO L414 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:19,769 INFO L82 PathProgramCache]: Analyzing trace with hash 376162147, now seen corresponding path program 182 times [2018-07-23 15:17:19,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:20,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:20,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-23 15:17:20,672 INFO L450 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-23 15:17:20,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-23 15:17:20,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:17:20,675 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-07-23 15:17:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:21,366 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-23 15:17:21,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-23 15:17:21,366 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-07-23 15:17:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:21,367 INFO L225 Difference]: With dead ends: 189 [2018-07-23 15:17:21,367 INFO L226 Difference]: Without dead ends: 187 [2018-07-23 15:17:21,368 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:17:21,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-23 15:17:21,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-23 15:17:21,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-23 15:17:21,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-23 15:17:21,371 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-07-23 15:17:21,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:21,371 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-23 15:17:21,371 INFO L472 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-23 15:17:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-23 15:17:21,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-23 15:17:21,371 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:21,372 INFO L353 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-07-23 15:17:21,372 INFO L414 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:21,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1223873524, now seen corresponding path program 183 times [2018-07-23 15:17:21,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:22,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:22,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-23 15:17:22,067 INFO L450 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-23 15:17:22,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-23 15:17:22,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:17:22,070 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-07-23 15:17:22,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:22,272 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-07-23 15:17:22,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-23 15:17:22,272 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-07-23 15:17:22,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:22,273 INFO L225 Difference]: With dead ends: 190 [2018-07-23 15:17:22,273 INFO L226 Difference]: Without dead ends: 188 [2018-07-23 15:17:22,274 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:17:22,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-23 15:17:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-23 15:17:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-23 15:17:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-23 15:17:22,276 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-07-23 15:17:22,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:22,276 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-23 15:17:22,276 INFO L472 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-23 15:17:22,276 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-23 15:17:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-23 15:17:22,277 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:22,277 INFO L353 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-07-23 15:17:22,277 INFO L414 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:22,277 INFO L82 PathProgramCache]: Analyzing trace with hash 714628227, now seen corresponding path program 184 times [2018-07-23 15:17:22,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:23,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:23,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-23 15:17:23,102 INFO L450 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-23 15:17:23,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-23 15:17:23,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-23 15:17:23,106 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-07-23 15:17:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:24,010 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-23 15:17:24,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-23 15:17:24,010 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-07-23 15:17:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:24,010 INFO L225 Difference]: With dead ends: 191 [2018-07-23 15:17:24,011 INFO L226 Difference]: Without dead ends: 189 [2018-07-23 15:17:24,012 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-23 15:17:24,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-23 15:17:24,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-23 15:17:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-23 15:17:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-23 15:17:24,015 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-07-23 15:17:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:24,015 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-23 15:17:24,015 INFO L472 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-23 15:17:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-23 15:17:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-23 15:17:24,016 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:24,016 INFO L353 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-07-23 15:17:24,016 INFO L414 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:24,016 INFO L82 PathProgramCache]: Analyzing trace with hash 678640364, now seen corresponding path program 185 times [2018-07-23 15:17:24,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:24,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:24,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-23 15:17:24,900 INFO L450 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-23 15:17:24,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-23 15:17:24,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-23 15:17:24,902 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-07-23 15:17:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:25,616 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-07-23 15:17:25,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-23 15:17:25,616 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-07-23 15:17:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:25,616 INFO L225 Difference]: With dead ends: 192 [2018-07-23 15:17:25,616 INFO L226 Difference]: Without dead ends: 190 [2018-07-23 15:17:25,617 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-23 15:17:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-23 15:17:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-23 15:17:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-23 15:17:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-23 15:17:25,619 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-07-23 15:17:25,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:25,619 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-23 15:17:25,619 INFO L472 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-23 15:17:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-23 15:17:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-23 15:17:25,620 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:25,620 INFO L353 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-07-23 15:17:25,620 INFO L414 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:25,620 INFO L82 PathProgramCache]: Analyzing trace with hash -436983389, now seen corresponding path program 186 times [2018-07-23 15:17:25,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:26,357 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:26,357 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-23 15:17:26,357 INFO L450 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-23 15:17:26,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-23 15:17:26,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-23 15:17:26,360 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-07-23 15:17:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:26,648 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-23 15:17:26,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-23 15:17:26,648 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-07-23 15:17:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:26,648 INFO L225 Difference]: With dead ends: 193 [2018-07-23 15:17:26,648 INFO L226 Difference]: Without dead ends: 191 [2018-07-23 15:17:26,650 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-23 15:17:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-23 15:17:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-23 15:17:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-23 15:17:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-23 15:17:26,652 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-07-23 15:17:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:26,652 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-23 15:17:26,652 INFO L472 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-23 15:17:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-23 15:17:26,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-23 15:17:26,652 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:26,653 INFO L353 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-07-23 15:17:26,653 INFO L414 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:26,653 INFO L82 PathProgramCache]: Analyzing trace with hash -661581364, now seen corresponding path program 187 times [2018-07-23 15:17:26,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:27,388 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:27,388 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-23 15:17:27,388 INFO L450 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-23 15:17:27,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-23 15:17:27,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:17:27,391 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-07-23 15:17:27,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:27,743 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-07-23 15:17:27,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-23 15:17:27,743 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-07-23 15:17:27,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:27,744 INFO L225 Difference]: With dead ends: 194 [2018-07-23 15:17:27,744 INFO L226 Difference]: Without dead ends: 192 [2018-07-23 15:17:27,745 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:17:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-23 15:17:27,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-23 15:17:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-23 15:17:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-23 15:17:27,748 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-07-23 15:17:27,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:27,748 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-23 15:17:27,748 INFO L472 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-23 15:17:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-23 15:17:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-23 15:17:27,749 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:27,749 INFO L353 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-07-23 15:17:27,749 INFO L414 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash 965816003, now seen corresponding path program 188 times [2018-07-23 15:17:27,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:28,540 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:28,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-23 15:17:28,540 INFO L450 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-23 15:17:28,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-23 15:17:28,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-23 15:17:28,543 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-07-23 15:17:29,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:29,318 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-23 15:17:29,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-23 15:17:29,319 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-07-23 15:17:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:29,319 INFO L225 Difference]: With dead ends: 195 [2018-07-23 15:17:29,319 INFO L226 Difference]: Without dead ends: 193 [2018-07-23 15:17:29,321 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-23 15:17:29,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-23 15:17:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-23 15:17:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-23 15:17:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-23 15:17:29,325 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-07-23 15:17:29,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:29,325 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-23 15:17:29,325 INFO L472 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-23 15:17:29,325 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-23 15:17:29,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-23 15:17:29,326 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:29,326 INFO L353 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-07-23 15:17:29,326 INFO L414 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:29,327 INFO L82 PathProgramCache]: Analyzing trace with hash -124473172, now seen corresponding path program 189 times [2018-07-23 15:17:29,327 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:30,224 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:30,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-23 15:17:30,224 INFO L450 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-23 15:17:30,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-23 15:17:30,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:17:30,227 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-07-23 15:17:31,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:31,036 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-07-23 15:17:31,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-23 15:17:31,037 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-07-23 15:17:31,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:31,037 INFO L225 Difference]: With dead ends: 196 [2018-07-23 15:17:31,037 INFO L226 Difference]: Without dead ends: 194 [2018-07-23 15:17:31,039 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:17:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-23 15:17:31,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-23 15:17:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-23 15:17:31,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-23 15:17:31,043 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-07-23 15:17:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:31,043 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-23 15:17:31,043 INFO L472 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-23 15:17:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-23 15:17:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-23 15:17:31,044 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:31,044 INFO L353 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-07-23 15:17:31,044 INFO L414 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:31,045 INFO L82 PathProgramCache]: Analyzing trace with hash 436300771, now seen corresponding path program 190 times [2018-07-23 15:17:31,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:31,799 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:31,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-23 15:17:31,800 INFO L450 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-23 15:17:31,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-23 15:17:31,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-23 15:17:31,803 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-07-23 15:17:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:32,238 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-23 15:17:32,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-23 15:17:32,239 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-07-23 15:17:32,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:32,239 INFO L225 Difference]: With dead ends: 197 [2018-07-23 15:17:32,239 INFO L226 Difference]: Without dead ends: 195 [2018-07-23 15:17:32,241 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-23 15:17:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-23 15:17:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-23 15:17:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-23 15:17:32,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-23 15:17:32,243 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-07-23 15:17:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:32,243 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-23 15:17:32,243 INFO L472 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-23 15:17:32,243 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-23 15:17:32,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-23 15:17:32,244 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:32,244 INFO L353 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-07-23 15:17:32,244 INFO L414 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:32,244 INFO L82 PathProgramCache]: Analyzing trace with hash 640423820, now seen corresponding path program 191 times [2018-07-23 15:17:32,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:33,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:33,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-23 15:17:33,091 INFO L450 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-23 15:17:33,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-23 15:17:33,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:17:33,096 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-07-23 15:17:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:33,427 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-07-23 15:17:33,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-23 15:17:33,427 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-07-23 15:17:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:33,427 INFO L225 Difference]: With dead ends: 198 [2018-07-23 15:17:33,427 INFO L226 Difference]: Without dead ends: 196 [2018-07-23 15:17:33,430 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:17:33,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-23 15:17:33,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-23 15:17:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-23 15:17:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-23 15:17:33,433 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-07-23 15:17:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:33,434 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-23 15:17:33,434 INFO L472 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-23 15:17:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-23 15:17:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-23 15:17:33,434 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:33,435 INFO L353 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-07-23 15:17:33,435 INFO L414 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:33,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1621696253, now seen corresponding path program 192 times [2018-07-23 15:17:33,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:34,325 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:34,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-23 15:17:34,325 INFO L450 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-23 15:17:34,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-23 15:17:34,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-23 15:17:34,328 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-07-23 15:17:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:34,720 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-23 15:17:34,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-23 15:17:34,720 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-07-23 15:17:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:34,721 INFO L225 Difference]: With dead ends: 199 [2018-07-23 15:17:34,721 INFO L226 Difference]: Without dead ends: 197 [2018-07-23 15:17:34,722 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-23 15:17:34,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-23 15:17:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-23 15:17:34,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-23 15:17:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-23 15:17:34,724 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-07-23 15:17:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:34,725 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-23 15:17:34,725 INFO L472 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-23 15:17:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-23 15:17:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-23 15:17:34,725 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:34,725 INFO L353 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-07-23 15:17:34,725 INFO L414 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:34,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1267025516, now seen corresponding path program 193 times [2018-07-23 15:17:34,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:35,591 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:35,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-23 15:17:35,591 INFO L450 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-23 15:17:35,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-23 15:17:35,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:17:35,595 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-07-23 15:17:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:36,632 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-07-23 15:17:36,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-23 15:17:36,632 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-07-23 15:17:36,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:36,632 INFO L225 Difference]: With dead ends: 200 [2018-07-23 15:17:36,633 INFO L226 Difference]: Without dead ends: 198 [2018-07-23 15:17:36,635 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:17:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-23 15:17:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-23 15:17:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-23 15:17:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-23 15:17:36,638 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-07-23 15:17:36,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:36,638 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-23 15:17:36,638 INFO L472 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-23 15:17:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-23 15:17:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-23 15:17:36,639 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:36,639 INFO L353 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-07-23 15:17:36,639 INFO L414 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash 623087139, now seen corresponding path program 194 times [2018-07-23 15:17:36,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:37,641 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:37,641 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-23 15:17:37,641 INFO L450 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-23 15:17:37,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-23 15:17:37,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:17:37,645 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-07-23 15:17:38,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:38,914 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-23 15:17:38,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-23 15:17:38,914 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-07-23 15:17:38,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:38,915 INFO L225 Difference]: With dead ends: 201 [2018-07-23 15:17:38,915 INFO L226 Difference]: Without dead ends: 199 [2018-07-23 15:17:38,917 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:17:38,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-23 15:17:38,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-23 15:17:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-23 15:17:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-23 15:17:38,919 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-07-23 15:17:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:38,919 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-23 15:17:38,919 INFO L472 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-23 15:17:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-23 15:17:38,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-23 15:17:38,920 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:38,920 INFO L353 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-07-23 15:17:38,920 INFO L414 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:38,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2135833932, now seen corresponding path program 195 times [2018-07-23 15:17:38,920 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:39,914 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:39,914 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-23 15:17:39,914 INFO L450 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-23 15:17:39,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-23 15:17:39,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:17:39,917 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-07-23 15:17:41,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:41,150 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-07-23 15:17:41,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-23 15:17:41,150 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-07-23 15:17:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:41,151 INFO L225 Difference]: With dead ends: 202 [2018-07-23 15:17:41,151 INFO L226 Difference]: Without dead ends: 200 [2018-07-23 15:17:41,152 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:17:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-23 15:17:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-23 15:17:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-23 15:17:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-23 15:17:41,154 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-07-23 15:17:41,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:41,154 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-23 15:17:41,154 INFO L472 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-23 15:17:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-23 15:17:41,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-23 15:17:41,155 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:41,155 INFO L353 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-07-23 15:17:41,155 INFO L414 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:41,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1786344259, now seen corresponding path program 196 times [2018-07-23 15:17:41,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:42,085 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:42,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-23 15:17:42,085 INFO L450 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-23 15:17:42,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-23 15:17:42,089 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-23 15:17:42,089 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-07-23 15:17:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:43,381 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-23 15:17:43,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-23 15:17:43,381 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-07-23 15:17:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:43,382 INFO L225 Difference]: With dead ends: 203 [2018-07-23 15:17:43,382 INFO L226 Difference]: Without dead ends: 201 [2018-07-23 15:17:43,384 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-23 15:17:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-23 15:17:43,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-23 15:17:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-23 15:17:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-23 15:17:43,387 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-07-23 15:17:43,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:43,388 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-23 15:17:43,388 INFO L472 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-23 15:17:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-23 15:17:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-23 15:17:43,389 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:43,389 INFO L353 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-07-23 15:17:43,389 INFO L414 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:43,389 INFO L82 PathProgramCache]: Analyzing trace with hash -457901012, now seen corresponding path program 197 times [2018-07-23 15:17:43,389 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:44,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:44,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-23 15:17:44,475 INFO L450 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-23 15:17:44,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-23 15:17:44,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:17:44,479 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-07-23 15:17:45,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:45,625 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-07-23 15:17:45,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-23 15:17:45,625 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-07-23 15:17:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:45,626 INFO L225 Difference]: With dead ends: 204 [2018-07-23 15:17:45,626 INFO L226 Difference]: Without dead ends: 202 [2018-07-23 15:17:45,628 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:17:45,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-23 15:17:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-23 15:17:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-23 15:17:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-23 15:17:45,630 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-07-23 15:17:45,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:45,631 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-23 15:17:45,631 INFO L472 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-23 15:17:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-23 15:17:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-23 15:17:45,631 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:45,631 INFO L353 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-07-23 15:17:45,632 INFO L414 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1310027677, now seen corresponding path program 198 times [2018-07-23 15:17:45,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:46,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:46,658 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-23 15:17:46,658 INFO L450 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-23 15:17:46,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-23 15:17:46,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-23 15:17:46,660 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-07-23 15:17:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:47,321 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-23 15:17:47,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-23 15:17:47,321 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-07-23 15:17:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:47,322 INFO L225 Difference]: With dead ends: 205 [2018-07-23 15:17:47,322 INFO L226 Difference]: Without dead ends: 203 [2018-07-23 15:17:47,323 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-23 15:17:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-23 15:17:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-23 15:17:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-23 15:17:47,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-23 15:17:47,325 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-07-23 15:17:47,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:47,325 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-23 15:17:47,325 INFO L472 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-23 15:17:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-23 15:17:47,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-23 15:17:47,326 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:47,326 INFO L353 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-07-23 15:17:47,326 INFO L414 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:47,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1956150516, now seen corresponding path program 199 times [2018-07-23 15:17:47,326 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:48,175 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:48,176 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-23 15:17:48,176 INFO L450 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-23 15:17:48,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-23 15:17:48,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-23 15:17:48,181 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-07-23 15:17:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:49,119 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-07-23 15:17:49,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-23 15:17:49,119 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-07-23 15:17:49,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:49,119 INFO L225 Difference]: With dead ends: 206 [2018-07-23 15:17:49,119 INFO L226 Difference]: Without dead ends: 204 [2018-07-23 15:17:49,121 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-23 15:17:49,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-23 15:17:49,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-23 15:17:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-23 15:17:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-23 15:17:49,124 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-07-23 15:17:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:49,124 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-23 15:17:49,124 INFO L472 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-23 15:17:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-23 15:17:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-23 15:17:49,125 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:49,125 INFO L353 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-07-23 15:17:49,125 INFO L414 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:49,125 INFO L82 PathProgramCache]: Analyzing trace with hash -511122045, now seen corresponding path program 200 times [2018-07-23 15:17:49,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:50,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:50,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-23 15:17:50,117 INFO L450 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-23 15:17:50,120 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-23 15:17:50,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-23 15:17:50,121 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-07-23 15:17:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:51,052 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-23 15:17:51,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-23 15:17:51,052 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-07-23 15:17:51,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:51,052 INFO L225 Difference]: With dead ends: 207 [2018-07-23 15:17:51,053 INFO L226 Difference]: Without dead ends: 205 [2018-07-23 15:17:51,055 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-23 15:17:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-23 15:17:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-23 15:17:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-23 15:17:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-23 15:17:51,057 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-07-23 15:17:51,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:51,057 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-23 15:17:51,058 INFO L472 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-23 15:17:51,058 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-23 15:17:51,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-23 15:17:51,058 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:51,058 INFO L353 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-07-23 15:17:51,058 INFO L414 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1335087596, now seen corresponding path program 201 times [2018-07-23 15:17:51,059 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:52,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:52,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-23 15:17:52,146 INFO L450 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-23 15:17:52,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-23 15:17:52,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:17:52,148 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-07-23 15:17:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:53,046 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-07-23 15:17:53,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-23 15:17:53,047 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-07-23 15:17:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:53,047 INFO L225 Difference]: With dead ends: 208 [2018-07-23 15:17:53,047 INFO L226 Difference]: Without dead ends: 206 [2018-07-23 15:17:53,048 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:17:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-23 15:17:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-23 15:17:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-23 15:17:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-23 15:17:53,051 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-07-23 15:17:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:53,051 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-23 15:17:53,051 INFO L472 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-23 15:17:53,051 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-23 15:17:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-23 15:17:53,052 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:53,052 INFO L353 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-07-23 15:17:53,052 INFO L414 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:53,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1561955677, now seen corresponding path program 202 times [2018-07-23 15:17:53,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:54,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:54,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-23 15:17:54,066 INFO L450 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-23 15:17:54,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-23 15:17:54,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:17:54,070 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-07-23 15:17:55,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:55,188 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-23 15:17:55,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-23 15:17:55,189 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-07-23 15:17:55,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:55,189 INFO L225 Difference]: With dead ends: 209 [2018-07-23 15:17:55,189 INFO L226 Difference]: Without dead ends: 207 [2018-07-23 15:17:55,191 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:17:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-23 15:17:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-23 15:17:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-23 15:17:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-23 15:17:55,194 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-07-23 15:17:55,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:55,194 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-23 15:17:55,194 INFO L472 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-23 15:17:55,194 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-23 15:17:55,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-23 15:17:55,195 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:55,195 INFO L353 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-07-23 15:17:55,195 INFO L414 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:55,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1175983924, now seen corresponding path program 203 times [2018-07-23 15:17:55,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:56,229 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:56,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-23 15:17:56,229 INFO L450 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-23 15:17:56,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-23 15:17:56,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:17:56,234 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-07-23 15:17:57,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:57,451 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-07-23 15:17:57,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-23 15:17:57,451 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-07-23 15:17:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:57,451 INFO L225 Difference]: With dead ends: 210 [2018-07-23 15:17:57,452 INFO L226 Difference]: Without dead ends: 208 [2018-07-23 15:17:57,453 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:17:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-23 15:17:57,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-23 15:17:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-23 15:17:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-23 15:17:57,457 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-07-23 15:17:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:57,457 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-23 15:17:57,457 INFO L472 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-23 15:17:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-23 15:17:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-23 15:17:57,458 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:57,458 INFO L353 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-07-23 15:17:57,458 INFO L414 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:57,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2095761469, now seen corresponding path program 204 times [2018-07-23 15:17:57,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:58,525 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:58,525 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-23 15:17:58,526 INFO L450 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-23 15:17:58,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-23 15:17:58,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-23 15:17:58,528 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-07-23 15:17:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:59,932 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-23 15:17:59,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-23 15:17:59,932 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-07-23 15:17:59,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:59,933 INFO L225 Difference]: With dead ends: 211 [2018-07-23 15:17:59,933 INFO L226 Difference]: Without dead ends: 209 [2018-07-23 15:17:59,934 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-23 15:17:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-23 15:17:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-23 15:17:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-23 15:17:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-23 15:17:59,937 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-07-23 15:17:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:59,937 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-23 15:17:59,937 INFO L472 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-23 15:17:59,937 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-23 15:17:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-23 15:17:59,937 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:59,938 INFO L353 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-07-23 15:17:59,938 INFO L414 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:17:59,938 INFO L82 PathProgramCache]: Analyzing trace with hash -544094292, now seen corresponding path program 205 times [2018-07-23 15:17:59,938 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:00,992 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:00,992 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-23 15:18:00,993 INFO L450 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-23 15:18:00,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-23 15:18:00,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:18:00,998 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-07-23 15:18:02,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:02,623 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-07-23 15:18:02,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-23 15:18:02,623 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-07-23 15:18:02,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:02,623 INFO L225 Difference]: With dead ends: 212 [2018-07-23 15:18:02,624 INFO L226 Difference]: Without dead ends: 210 [2018-07-23 15:18:02,626 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:18:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-23 15:18:02,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-23 15:18:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-23 15:18:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-23 15:18:02,628 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-07-23 15:18:02,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:02,629 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-23 15:18:02,629 INFO L472 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-23 15:18:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-23 15:18:02,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-23 15:18:02,629 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:02,629 INFO L353 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-07-23 15:18:02,629 INFO L414 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:02,630 INFO L82 PathProgramCache]: Analyzing trace with hash 312947939, now seen corresponding path program 206 times [2018-07-23 15:18:02,630 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:03,691 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:03,691 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-23 15:18:03,692 INFO L450 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-23 15:18:03,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-23 15:18:03,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:18:03,696 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-07-23 15:18:05,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:05,221 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-23 15:18:05,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-23 15:18:05,222 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-07-23 15:18:05,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:05,222 INFO L225 Difference]: With dead ends: 213 [2018-07-23 15:18:05,222 INFO L226 Difference]: Without dead ends: 211 [2018-07-23 15:18:05,224 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:18:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-23 15:18:05,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-23 15:18:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-23 15:18:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-23 15:18:05,226 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-07-23 15:18:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:05,226 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-23 15:18:05,226 INFO L472 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-23 15:18:05,226 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-23 15:18:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-23 15:18:05,227 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:05,227 INFO L353 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-07-23 15:18:05,227 INFO L414 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:05,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1111453324, now seen corresponding path program 207 times [2018-07-23 15:18:05,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:06,232 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:06,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-23 15:18:06,232 INFO L450 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-23 15:18:06,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-23 15:18:06,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:18:06,236 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-07-23 15:18:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:07,412 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-07-23 15:18:07,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-23 15:18:07,412 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-07-23 15:18:07,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:07,413 INFO L225 Difference]: With dead ends: 214 [2018-07-23 15:18:07,413 INFO L226 Difference]: Without dead ends: 212 [2018-07-23 15:18:07,414 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:18:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-23 15:18:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-23 15:18:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-23 15:18:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-23 15:18:07,417 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-07-23 15:18:07,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:07,418 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-23 15:18:07,418 INFO L472 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-23 15:18:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-23 15:18:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-23 15:18:07,419 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:07,419 INFO L353 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-07-23 15:18:07,419 INFO L414 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:07,419 INFO L82 PathProgramCache]: Analyzing trace with hash 95316483, now seen corresponding path program 208 times [2018-07-23 15:18:07,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:08,668 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:08,668 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-23 15:18:08,668 INFO L450 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-23 15:18:08,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-23 15:18:08,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-23 15:18:08,673 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-07-23 15:18:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:09,483 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-23 15:18:09,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-23 15:18:09,483 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-07-23 15:18:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:09,484 INFO L225 Difference]: With dead ends: 215 [2018-07-23 15:18:09,484 INFO L226 Difference]: Without dead ends: 213 [2018-07-23 15:18:09,486 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-23 15:18:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-23 15:18:09,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-23 15:18:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-23 15:18:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-23 15:18:09,489 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-07-23 15:18:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:09,489 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-23 15:18:09,489 INFO L472 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-23 15:18:09,489 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-23 15:18:09,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-23 15:18:09,490 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:09,490 INFO L353 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-07-23 15:18:09,490 INFO L414 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:09,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1340154516, now seen corresponding path program 209 times [2018-07-23 15:18:09,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:10,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:10,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-23 15:18:10,622 INFO L450 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-23 15:18:10,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-23 15:18:10,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:18:10,628 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-07-23 15:18:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:11,260 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-07-23 15:18:11,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-23 15:18:11,260 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-07-23 15:18:11,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:11,261 INFO L225 Difference]: With dead ends: 216 [2018-07-23 15:18:11,261 INFO L226 Difference]: Without dead ends: 214 [2018-07-23 15:18:11,262 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:18:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-23 15:18:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-23 15:18:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-23 15:18:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-23 15:18:11,265 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-07-23 15:18:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:11,265 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-23 15:18:11,265 INFO L472 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-23 15:18:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-23 15:18:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-23 15:18:11,266 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:11,266 INFO L353 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-07-23 15:18:11,266 INFO L414 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:11,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1404884771, now seen corresponding path program 210 times [2018-07-23 15:18:11,266 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:12,220 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:12,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-23 15:18:12,221 INFO L450 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-23 15:18:12,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-23 15:18:12,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:18:12,224 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-07-23 15:18:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:13,078 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-23 15:18:13,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-23 15:18:13,079 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-07-23 15:18:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:13,079 INFO L225 Difference]: With dead ends: 217 [2018-07-23 15:18:13,079 INFO L226 Difference]: Without dead ends: 215 [2018-07-23 15:18:13,081 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:18:13,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-23 15:18:13,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-23 15:18:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-23 15:18:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-23 15:18:13,083 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-07-23 15:18:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:13,083 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-23 15:18:13,083 INFO L472 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-23 15:18:13,083 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-23 15:18:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-23 15:18:13,084 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:13,084 INFO L353 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-07-23 15:18:13,084 INFO L414 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:13,084 INFO L82 PathProgramCache]: Analyzing trace with hash 601756748, now seen corresponding path program 211 times [2018-07-23 15:18:13,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:14,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:14,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-23 15:18:14,033 INFO L450 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-23 15:18:14,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-23 15:18:14,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:18:14,038 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-07-23 15:18:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:15,354 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-07-23 15:18:15,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-23 15:18:15,354 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-07-23 15:18:15,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:15,354 INFO L225 Difference]: With dead ends: 218 [2018-07-23 15:18:15,354 INFO L226 Difference]: Without dead ends: 216 [2018-07-23 15:18:15,356 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:18:15,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-23 15:18:15,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-23 15:18:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-23 15:18:15,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-23 15:18:15,359 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-07-23 15:18:15,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:15,359 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-23 15:18:15,359 INFO L472 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-23 15:18:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-23 15:18:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-23 15:18:15,359 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:15,359 INFO L353 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-07-23 15:18:15,360 INFO L414 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:15,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1474591811, now seen corresponding path program 212 times [2018-07-23 15:18:15,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:16,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:16,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-23 15:18:16,374 INFO L450 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-23 15:18:16,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-23 15:18:16,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-23 15:18:16,376 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-07-23 15:18:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:17,484 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-23 15:18:17,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-23 15:18:17,484 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-07-23 15:18:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:17,485 INFO L225 Difference]: With dead ends: 219 [2018-07-23 15:18:17,485 INFO L226 Difference]: Without dead ends: 217 [2018-07-23 15:18:17,486 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-23 15:18:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-23 15:18:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-23 15:18:17,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-23 15:18:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-23 15:18:17,488 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-07-23 15:18:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:17,489 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-23 15:18:17,489 INFO L472 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-23 15:18:17,489 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-23 15:18:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-23 15:18:17,489 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:17,489 INFO L353 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-07-23 15:18:17,490 INFO L414 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:17,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1532292308, now seen corresponding path program 213 times [2018-07-23 15:18:17,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:18,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:18,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-23 15:18:18,606 INFO L450 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-23 15:18:18,610 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-23 15:18:18,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-23 15:18:18,612 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-07-23 15:18:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:19,101 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-07-23 15:18:19,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-23 15:18:19,102 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-07-23 15:18:19,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:19,102 INFO L225 Difference]: With dead ends: 220 [2018-07-23 15:18:19,102 INFO L226 Difference]: Without dead ends: 218 [2018-07-23 15:18:19,105 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-23 15:18:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-23 15:18:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-23 15:18:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-23 15:18:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-23 15:18:19,107 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-07-23 15:18:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:19,108 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-23 15:18:19,108 INFO L472 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-23 15:18:19,108 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-23 15:18:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-23 15:18:19,108 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:19,108 INFO L353 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-07-23 15:18:19,108 INFO L414 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:19,109 INFO L82 PathProgramCache]: Analyzing trace with hash -256419485, now seen corresponding path program 214 times [2018-07-23 15:18:19,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:20,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:20,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-23 15:18:20,179 INFO L450 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-23 15:18:20,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-23 15:18:20,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-23 15:18:20,184 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-07-23 15:18:20,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:20,895 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-23 15:18:20,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-23 15:18:20,895 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-07-23 15:18:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:20,896 INFO L225 Difference]: With dead ends: 221 [2018-07-23 15:18:20,896 INFO L226 Difference]: Without dead ends: 219 [2018-07-23 15:18:20,898 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-23 15:18:20,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-23 15:18:20,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-23 15:18:20,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-23 15:18:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-23 15:18:20,900 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-07-23 15:18:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:20,900 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-23 15:18:20,900 INFO L472 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-23 15:18:20,900 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-23 15:18:20,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-23 15:18:20,901 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:20,901 INFO L353 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-07-23 15:18:20,901 INFO L414 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:20,901 INFO L82 PathProgramCache]: Analyzing trace with hash 640932364, now seen corresponding path program 215 times [2018-07-23 15:18:20,901 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:21,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:21,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-23 15:18:21,926 INFO L450 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-23 15:18:21,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-23 15:18:21,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-23 15:18:21,928 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-07-23 15:18:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:23,239 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-07-23 15:18:23,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-23 15:18:23,239 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-07-23 15:18:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:23,239 INFO L225 Difference]: With dead ends: 222 [2018-07-23 15:18:23,239 INFO L226 Difference]: Without dead ends: 220 [2018-07-23 15:18:23,241 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-23 15:18:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-23 15:18:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-23 15:18:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-23 15:18:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-23 15:18:23,243 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-07-23 15:18:23,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:23,243 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-23 15:18:23,243 INFO L472 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-23 15:18:23,243 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-23 15:18:23,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-23 15:18:23,244 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:23,244 INFO L353 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-07-23 15:18:23,244 INFO L414 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:23,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1605931389, now seen corresponding path program 216 times [2018-07-23 15:18:23,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:24,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:24,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-23 15:18:24,241 INFO L450 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-23 15:18:24,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-23 15:18:24,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-23 15:18:24,245 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-07-23 15:18:25,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:25,485 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-23 15:18:25,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-23 15:18:25,485 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-07-23 15:18:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:25,486 INFO L225 Difference]: With dead ends: 223 [2018-07-23 15:18:25,486 INFO L226 Difference]: Without dead ends: 221 [2018-07-23 15:18:25,488 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-23 15:18:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-23 15:18:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-23 15:18:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-23 15:18:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-23 15:18:25,492 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-07-23 15:18:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:25,492 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-23 15:18:25,492 INFO L472 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-23 15:18:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-23 15:18:25,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-23 15:18:25,493 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:25,493 INFO L353 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-07-23 15:18:25,494 INFO L414 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:25,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1755736300, now seen corresponding path program 217 times [2018-07-23 15:18:25,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:26,704 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:26,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-23 15:18:26,704 INFO L450 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-23 15:18:26,708 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-23 15:18:26,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-23 15:18:26,710 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-07-23 15:18:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:27,585 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-07-23 15:18:27,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-23 15:18:27,586 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-07-23 15:18:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:27,586 INFO L225 Difference]: With dead ends: 224 [2018-07-23 15:18:27,586 INFO L226 Difference]: Without dead ends: 222 [2018-07-23 15:18:27,588 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-23 15:18:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-23 15:18:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-23 15:18:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-23 15:18:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-23 15:18:27,590 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-07-23 15:18:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:27,591 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-23 15:18:27,591 INFO L472 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-23 15:18:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-23 15:18:27,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-23 15:18:27,591 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:27,591 INFO L353 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-07-23 15:18:27,591 INFO L414 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:27,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1406747741, now seen corresponding path program 218 times [2018-07-23 15:18:27,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:28,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:28,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-23 15:18:28,802 INFO L450 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-23 15:18:28,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-23 15:18:28,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-23 15:18:28,807 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-07-23 15:18:30,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:30,228 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-23 15:18:30,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-23 15:18:30,228 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-07-23 15:18:30,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:30,229 INFO L225 Difference]: With dead ends: 225 [2018-07-23 15:18:30,229 INFO L226 Difference]: Without dead ends: 223 [2018-07-23 15:18:30,231 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-23 15:18:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-23 15:18:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-23 15:18:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-23 15:18:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-23 15:18:30,233 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-07-23 15:18:30,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:30,233 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-23 15:18:30,233 INFO L472 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-23 15:18:30,233 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-23 15:18:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-23 15:18:30,234 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:30,234 INFO L353 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-07-23 15:18:30,234 INFO L414 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:30,234 INFO L82 PathProgramCache]: Analyzing trace with hash -659505204, now seen corresponding path program 219 times [2018-07-23 15:18:30,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:31,282 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:31,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-23 15:18:31,283 INFO L450 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-23 15:18:31,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-23 15:18:31,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-23 15:18:31,287 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-07-23 15:18:31,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:31,822 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-07-23 15:18:31,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-23 15:18:31,822 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-07-23 15:18:31,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:31,823 INFO L225 Difference]: With dead ends: 226 [2018-07-23 15:18:31,823 INFO L226 Difference]: Without dead ends: 224 [2018-07-23 15:18:31,825 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-23 15:18:31,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-23 15:18:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-23 15:18:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-23 15:18:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-23 15:18:31,829 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-07-23 15:18:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:31,829 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-23 15:18:31,829 INFO L472 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-23 15:18:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-23 15:18:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-23 15:18:31,830 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:31,830 INFO L353 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-07-23 15:18:31,830 INFO L414 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:31,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1030176963, now seen corresponding path program 220 times [2018-07-23 15:18:31,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:33,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:33,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-23 15:18:33,031 INFO L450 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-23 15:18:33,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-23 15:18:33,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-23 15:18:33,035 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-07-23 15:18:34,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:34,123 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-23 15:18:34,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-23 15:18:34,123 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-07-23 15:18:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:34,123 INFO L225 Difference]: With dead ends: 227 [2018-07-23 15:18:34,123 INFO L226 Difference]: Without dead ends: 225 [2018-07-23 15:18:34,125 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-23 15:18:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-23 15:18:34,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-23 15:18:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-23 15:18:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-23 15:18:34,127 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-07-23 15:18:34,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:34,128 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-23 15:18:34,128 INFO L472 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-23 15:18:34,128 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-23 15:18:34,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-23 15:18:34,128 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:34,128 INFO L353 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-07-23 15:18:34,129 INFO L414 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:34,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1870716588, now seen corresponding path program 221 times [2018-07-23 15:18:34,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:35,350 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:35,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-23 15:18:35,350 INFO L450 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-23 15:18:35,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-23 15:18:35,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-23 15:18:35,356 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-07-23 15:18:36,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:36,959 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-07-23 15:18:36,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-23 15:18:36,960 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-07-23 15:18:36,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:36,960 INFO L225 Difference]: With dead ends: 228 [2018-07-23 15:18:36,960 INFO L226 Difference]: Without dead ends: 226 [2018-07-23 15:18:36,963 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-23 15:18:36,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-23 15:18:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-23 15:18:36,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-23 15:18:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-23 15:18:36,967 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-07-23 15:18:36,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:36,967 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-23 15:18:36,967 INFO L472 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-23 15:18:36,967 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-23 15:18:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-23 15:18:36,968 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:36,968 INFO L353 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-07-23 15:18:36,968 INFO L414 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:36,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2137326109, now seen corresponding path program 222 times [2018-07-23 15:18:36,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:38,164 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:38,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:38,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-23 15:18:38,165 INFO L450 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-23 15:18:38,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-23 15:18:38,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-23 15:18:38,170 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-07-23 15:18:39,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:39,037 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-23 15:18:39,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-23 15:18:39,037 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-07-23 15:18:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:39,037 INFO L225 Difference]: With dead ends: 229 [2018-07-23 15:18:39,037 INFO L226 Difference]: Without dead ends: 227 [2018-07-23 15:18:39,039 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-23 15:18:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-23 15:18:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-23 15:18:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-23 15:18:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-23 15:18:39,042 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-07-23 15:18:39,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:39,042 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-23 15:18:39,042 INFO L472 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-23 15:18:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-23 15:18:39,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-23 15:18:39,043 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:39,043 INFO L353 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-07-23 15:18:39,043 INFO L414 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:39,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1832598132, now seen corresponding path program 223 times [2018-07-23 15:18:39,043 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:40,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:40,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-23 15:18:40,192 INFO L450 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-23 15:18:40,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-23 15:18:40,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-23 15:18:40,198 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-07-23 15:18:42,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:42,308 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-07-23 15:18:42,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-23 15:18:42,309 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-07-23 15:18:42,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:42,309 INFO L225 Difference]: With dead ends: 230 [2018-07-23 15:18:42,309 INFO L226 Difference]: Without dead ends: 228 [2018-07-23 15:18:42,311 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-23 15:18:42,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-23 15:18:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-23 15:18:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-23 15:18:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-23 15:18:42,314 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-07-23 15:18:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:42,314 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-23 15:18:42,314 INFO L472 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-23 15:18:42,314 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-23 15:18:42,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-23 15:18:42,314 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:42,315 INFO L353 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-07-23 15:18:42,315 INFO L414 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash -975965437, now seen corresponding path program 224 times [2018-07-23 15:18:42,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:43,590 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:43,590 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-23 15:18:43,590 INFO L450 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-23 15:18:43,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-23 15:18:43,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-23 15:18:43,596 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-07-23 15:18:44,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:44,051 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-23 15:18:44,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-23 15:18:44,051 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-07-23 15:18:44,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:44,051 INFO L225 Difference]: With dead ends: 231 [2018-07-23 15:18:44,052 INFO L226 Difference]: Without dead ends: 229 [2018-07-23 15:18:44,053 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-23 15:18:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-23 15:18:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-23 15:18:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-23 15:18:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-23 15:18:44,056 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-07-23 15:18:44,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:44,056 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-23 15:18:44,056 INFO L472 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-23 15:18:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-23 15:18:44,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-23 15:18:44,057 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:44,057 INFO L353 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-07-23 15:18:44,057 INFO L414 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:44,057 INFO L82 PathProgramCache]: Analyzing trace with hash -190155668, now seen corresponding path program 225 times [2018-07-23 15:18:44,057 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:45,320 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:45,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-23 15:18:45,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-23 15:18:45,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-23 15:18:45,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-23 15:18:45,325 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-07-23 15:18:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:47,403 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-07-23 15:18:47,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-23 15:18:47,403 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-07-23 15:18:47,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:47,403 INFO L225 Difference]: With dead ends: 232 [2018-07-23 15:18:47,404 INFO L226 Difference]: Without dead ends: 230 [2018-07-23 15:18:47,405 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-23 15:18:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-23 15:18:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-23 15:18:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-23 15:18:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-23 15:18:47,408 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-07-23 15:18:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:47,408 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-23 15:18:47,408 INFO L472 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-23 15:18:47,408 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-23 15:18:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-23 15:18:47,409 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:47,409 INFO L353 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-07-23 15:18:47,409 INFO L414 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:47,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1599856605, now seen corresponding path program 226 times [2018-07-23 15:18:47,409 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:48,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:48,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-23 15:18:48,707 INFO L450 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-23 15:18:48,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-23 15:18:48,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-23 15:18:48,713 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-07-23 15:18:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:50,104 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-23 15:18:50,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-23 15:18:50,105 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-07-23 15:18:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:50,105 INFO L225 Difference]: With dead ends: 233 [2018-07-23 15:18:50,105 INFO L226 Difference]: Without dead ends: 231 [2018-07-23 15:18:50,108 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-23 15:18:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-23 15:18:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-23 15:18:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-23 15:18:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-23 15:18:50,110 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-07-23 15:18:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:50,111 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-23 15:18:50,111 INFO L472 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-23 15:18:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-23 15:18:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-23 15:18:50,111 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:50,112 INFO L353 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-07-23 15:18:50,112 INFO L414 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:50,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1944054604, now seen corresponding path program 227 times [2018-07-23 15:18:50,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:51,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:51,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-23 15:18:51,451 INFO L450 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-23 15:18:51,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-23 15:18:51,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-23 15:18:51,454 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-07-23 15:18:53,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:53,186 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-07-23 15:18:53,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-23 15:18:53,186 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-07-23 15:18:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:53,187 INFO L225 Difference]: With dead ends: 234 [2018-07-23 15:18:53,187 INFO L226 Difference]: Without dead ends: 232 [2018-07-23 15:18:53,188 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-23 15:18:53,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-23 15:18:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-23 15:18:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-23 15:18:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-23 15:18:53,191 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-07-23 15:18:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:53,192 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-23 15:18:53,192 INFO L472 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-23 15:18:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-23 15:18:53,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-23 15:18:53,192 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:53,192 INFO L353 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-07-23 15:18:53,192 INFO L414 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:53,193 INFO L82 PathProgramCache]: Analyzing trace with hash 136152387, now seen corresponding path program 228 times [2018-07-23 15:18:53,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:54,470 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:54,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230] total 230 [2018-07-23 15:18:54,471 INFO L450 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-07-23 15:18:54,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-07-23 15:18:54,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-23 15:18:54,476 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-07-23 15:18:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:55,035 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-23 15:18:55,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-23 15:18:55,035 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-07-23 15:18:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:55,036 INFO L225 Difference]: With dead ends: 235 [2018-07-23 15:18:55,036 INFO L226 Difference]: Without dead ends: 233 [2018-07-23 15:18:55,038 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-23 15:18:55,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-23 15:18:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-23 15:18:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-23 15:18:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-23 15:18:55,041 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-07-23 15:18:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:55,041 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-23 15:18:55,041 INFO L472 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-07-23 15:18:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-23 15:18:55,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-23 15:18:55,042 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:55,042 INFO L353 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-07-23 15:18:55,042 INFO L414 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:55,042 INFO L82 PathProgramCache]: Analyzing trace with hash -74241492, now seen corresponding path program 229 times [2018-07-23 15:18:55,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:56,444 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:56,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-23 15:18:56,444 INFO L450 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-23 15:18:56,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-23 15:18:56,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-23 15:18:56,447 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-07-23 15:18:58,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:58,600 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-07-23 15:18:58,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-23 15:18:58,600 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-07-23 15:18:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:58,601 INFO L225 Difference]: With dead ends: 236 [2018-07-23 15:18:58,601 INFO L226 Difference]: Without dead ends: 234 [2018-07-23 15:18:58,602 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-23 15:18:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-23 15:18:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-23 15:18:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-23 15:18:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-23 15:18:58,605 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-07-23 15:18:58,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:58,605 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-23 15:18:58,605 INFO L472 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-23 15:18:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-23 15:18:58,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-23 15:18:58,606 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:58,606 INFO L353 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-07-23 15:18:58,606 INFO L414 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:18:58,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1993482851, now seen corresponding path program 230 times [2018-07-23 15:18:58,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:59,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:59,963 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232] total 232 [2018-07-23 15:18:59,963 INFO L450 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-07-23 15:18:59,967 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-07-23 15:18:59,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-23 15:18:59,969 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-07-23 15:19:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:01,368 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-23 15:19:01,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-23 15:19:01,368 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-07-23 15:19:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:01,368 INFO L225 Difference]: With dead ends: 237 [2018-07-23 15:19:01,369 INFO L226 Difference]: Without dead ends: 235 [2018-07-23 15:19:01,371 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-23 15:19:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-23 15:19:01,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-23 15:19:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-23 15:19:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-23 15:19:01,374 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-07-23 15:19:01,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:01,375 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-23 15:19:01,375 INFO L472 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-07-23 15:19:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-23 15:19:01,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-23 15:19:01,375 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:01,375 INFO L353 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-07-23 15:19:01,375 INFO L414 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:01,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1668428044, now seen corresponding path program 231 times [2018-07-23 15:19:01,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:02,754 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:02,755 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233] total 233 [2018-07-23 15:19:02,755 INFO L450 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-07-23 15:19:02,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-07-23 15:19:02,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-23 15:19:02,761 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-07-23 15:19:03,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:03,965 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-07-23 15:19:03,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-23 15:19:03,965 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-07-23 15:19:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:03,965 INFO L225 Difference]: With dead ends: 238 [2018-07-23 15:19:03,966 INFO L226 Difference]: Without dead ends: 236 [2018-07-23 15:19:03,968 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-23 15:19:03,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-23 15:19:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-23 15:19:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-23 15:19:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-23 15:19:04,016 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-07-23 15:19:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:04,016 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-23 15:19:04,016 INFO L472 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-07-23 15:19:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-23 15:19:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-23 15:19:04,017 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:04,017 INFO L353 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-07-23 15:19:04,017 INFO L414 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:04,017 INFO L82 PathProgramCache]: Analyzing trace with hash 181663619, now seen corresponding path program 232 times [2018-07-23 15:19:04,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:05,409 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:05,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234] total 234 [2018-07-23 15:19:05,409 INFO L450 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-07-23 15:19:05,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-07-23 15:19:05,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-23 15:19:05,415 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-07-23 15:19:07,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:07,368 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-23 15:19:07,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-07-23 15:19:07,368 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-07-23 15:19:07,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:07,368 INFO L225 Difference]: With dead ends: 239 [2018-07-23 15:19:07,369 INFO L226 Difference]: Without dead ends: 237 [2018-07-23 15:19:07,371 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-23 15:19:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-23 15:19:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-23 15:19:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-23 15:19:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-23 15:19:07,373 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-07-23 15:19:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:07,373 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-23 15:19:07,373 INFO L472 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-07-23 15:19:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-23 15:19:07,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-23 15:19:07,374 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:07,374 INFO L353 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-07-23 15:19:07,374 INFO L414 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:07,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1336606700, now seen corresponding path program 233 times [2018-07-23 15:19:07,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:08,696 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:08,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-23 15:19:08,697 INFO L450 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-23 15:19:08,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-23 15:19:08,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-23 15:19:08,703 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-07-23 15:19:09,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:09,931 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-07-23 15:19:09,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-23 15:19:09,931 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-07-23 15:19:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:09,932 INFO L225 Difference]: With dead ends: 240 [2018-07-23 15:19:09,932 INFO L226 Difference]: Without dead ends: 238 [2018-07-23 15:19:09,935 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-23 15:19:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-23 15:19:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-23 15:19:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-23 15:19:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-23 15:19:09,937 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-07-23 15:19:09,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:09,937 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-23 15:19:09,938 INFO L472 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-23 15:19:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-23 15:19:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-23 15:19:09,938 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:09,938 INFO L353 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-07-23 15:19:09,938 INFO L414 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:09,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1514863453, now seen corresponding path program 234 times [2018-07-23 15:19:09,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:11,354 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:11,354 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236] total 236 [2018-07-23 15:19:11,354 INFO L450 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-07-23 15:19:11,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-07-23 15:19:11,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-23 15:19:11,362 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-07-23 15:19:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:13,253 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-23 15:19:13,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-23 15:19:13,253 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-07-23 15:19:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:13,253 INFO L225 Difference]: With dead ends: 241 [2018-07-23 15:19:13,254 INFO L226 Difference]: Without dead ends: 239 [2018-07-23 15:19:13,257 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-23 15:19:13,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-23 15:19:13,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-23 15:19:13,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-23 15:19:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-23 15:19:13,260 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-07-23 15:19:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:13,260 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-23 15:19:13,260 INFO L472 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-07-23 15:19:13,260 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-23 15:19:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-23 15:19:13,261 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:13,261 INFO L353 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-07-23 15:19:13,261 INFO L414 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:13,261 INFO L82 PathProgramCache]: Analyzing trace with hash 283875020, now seen corresponding path program 235 times [2018-07-23 15:19:13,261 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:14,813 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:14,813 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237] total 237 [2018-07-23 15:19:14,813 INFO L450 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-07-23 15:19:14,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-07-23 15:19:14,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-23 15:19:14,821 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. [2018-07-23 15:19:16,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:16,845 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-07-23 15:19:16,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-07-23 15:19:16,846 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 238 [2018-07-23 15:19:16,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:16,846 INFO L225 Difference]: With dead ends: 242 [2018-07-23 15:19:16,846 INFO L226 Difference]: Without dead ends: 240 [2018-07-23 15:19:16,849 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-23 15:19:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-23 15:19:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-23 15:19:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-23 15:19:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-23 15:19:16,852 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-07-23 15:19:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:16,853 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-23 15:19:16,853 INFO L472 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-07-23 15:19:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-23 15:19:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-23 15:19:16,853 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:16,854 INFO L353 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-07-23 15:19:16,854 INFO L414 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:16,854 INFO L82 PathProgramCache]: Analyzing trace with hash 210192835, now seen corresponding path program 236 times [2018-07-23 15:19:16,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:18,427 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:18,427 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238] total 238 [2018-07-23 15:19:18,427 INFO L450 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-07-23 15:19:18,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-07-23 15:19:18,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-23 15:19:18,435 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 239 states. [2018-07-23 15:19:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:19,785 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-23 15:19:19,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-07-23 15:19:19,785 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 239 [2018-07-23 15:19:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:19,786 INFO L225 Difference]: With dead ends: 243 [2018-07-23 15:19:19,786 INFO L226 Difference]: Without dead ends: 241 [2018-07-23 15:19:19,788 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-23 15:19:19,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-23 15:19:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-23 15:19:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-23 15:19:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-23 15:19:19,791 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-07-23 15:19:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:19,791 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-23 15:19:19,791 INFO L472 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-07-23 15:19:19,791 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-23 15:19:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-23 15:19:19,792 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:19,792 INFO L353 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-07-23 15:19:19,792 INFO L414 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:19,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2073954900, now seen corresponding path program 237 times [2018-07-23 15:19:19,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:21,347 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:21,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239] total 239 [2018-07-23 15:19:21,347 INFO L450 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-07-23 15:19:21,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-07-23 15:19:21,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-23 15:19:21,350 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 240 states. [2018-07-23 15:19:22,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:22,511 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-07-23 15:19:22,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-07-23 15:19:22,511 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 240 [2018-07-23 15:19:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:22,511 INFO L225 Difference]: With dead ends: 244 [2018-07-23 15:19:22,512 INFO L226 Difference]: Without dead ends: 242 [2018-07-23 15:19:22,513 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-23 15:19:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-23 15:19:22,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-23 15:19:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-23 15:19:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-23 15:19:22,515 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-07-23 15:19:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:22,515 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-23 15:19:22,515 INFO L472 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-07-23 15:19:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-23 15:19:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-23 15:19:22,516 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:22,516 INFO L353 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-07-23 15:19:22,516 INFO L414 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:22,516 INFO L82 PathProgramCache]: Analyzing trace with hash 131909347, now seen corresponding path program 238 times [2018-07-23 15:19:22,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:23,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:23,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240] total 240 [2018-07-23 15:19:23,872 INFO L450 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-07-23 15:19:23,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-07-23 15:19:23,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-23 15:19:23,878 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 241 states. [2018-07-23 15:19:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:25,818 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-23 15:19:25,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-07-23 15:19:25,818 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 241 [2018-07-23 15:19:25,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:25,819 INFO L225 Difference]: With dead ends: 245 [2018-07-23 15:19:25,819 INFO L226 Difference]: Without dead ends: 243 [2018-07-23 15:19:25,823 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-23 15:19:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-23 15:19:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-23 15:19:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-23 15:19:25,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-23 15:19:25,827 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-07-23 15:19:25,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:25,827 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-23 15:19:25,827 INFO L472 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-07-23 15:19:25,827 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-23 15:19:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-23 15:19:25,828 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:25,828 INFO L353 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-07-23 15:19:25,828 INFO L414 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash -205775732, now seen corresponding path program 239 times [2018-07-23 15:19:25,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:27,312 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:27,313 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241] total 241 [2018-07-23 15:19:27,313 INFO L450 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-07-23 15:19:27,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-07-23 15:19:27,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-23 15:19:27,316 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 242 states. [2018-07-23 15:19:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:29,186 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-07-23 15:19:29,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-07-23 15:19:29,186 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 242 [2018-07-23 15:19:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:29,187 INFO L225 Difference]: With dead ends: 246 [2018-07-23 15:19:29,187 INFO L226 Difference]: Without dead ends: 244 [2018-07-23 15:19:29,188 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-23 15:19:29,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-23 15:19:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-23 15:19:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-23 15:19:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-23 15:19:29,191 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-07-23 15:19:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:29,191 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-23 15:19:29,191 INFO L472 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-07-23 15:19:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-23 15:19:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-23 15:19:29,192 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:29,192 INFO L353 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-07-23 15:19:29,192 INFO L414 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2084078589, now seen corresponding path program 240 times [2018-07-23 15:19:29,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:30,768 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:30,768 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242] total 242 [2018-07-23 15:19:30,768 INFO L450 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-07-23 15:19:30,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-07-23 15:19:30,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-23 15:19:30,776 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 243 states. [2018-07-23 15:19:31,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:31,489 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-23 15:19:31,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-07-23 15:19:31,490 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 243 [2018-07-23 15:19:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:31,490 INFO L225 Difference]: With dead ends: 247 [2018-07-23 15:19:31,491 INFO L226 Difference]: Without dead ends: 245 [2018-07-23 15:19:31,493 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-23 15:19:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-23 15:19:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-23 15:19:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-23 15:19:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-23 15:19:31,496 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-07-23 15:19:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:31,497 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-23 15:19:31,497 INFO L472 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-07-23 15:19:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-23 15:19:31,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-23 15:19:31,497 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:31,497 INFO L353 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-07-23 15:19:31,498 INFO L414 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:31,498 INFO L82 PathProgramCache]: Analyzing trace with hash -181925012, now seen corresponding path program 241 times [2018-07-23 15:19:31,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:33,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:33,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243] total 243 [2018-07-23 15:19:33,011 INFO L450 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-07-23 15:19:33,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-07-23 15:19:33,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-23 15:19:33,015 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 244 states. [2018-07-23 15:19:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:35,191 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-07-23 15:19:35,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-07-23 15:19:35,191 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 244 [2018-07-23 15:19:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:35,191 INFO L225 Difference]: With dead ends: 248 [2018-07-23 15:19:35,192 INFO L226 Difference]: Without dead ends: 246 [2018-07-23 15:19:35,193 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-23 15:19:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-23 15:19:35,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-23 15:19:35,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-23 15:19:35,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-23 15:19:35,197 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-07-23 15:19:35,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:35,197 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-23 15:19:35,197 INFO L472 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-07-23 15:19:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-23 15:19:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-23 15:19:35,198 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:35,198 INFO L353 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-07-23 15:19:35,198 INFO L414 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:35,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1344706269, now seen corresponding path program 242 times [2018-07-23 15:19:35,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:36,789 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:36,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244] total 244 [2018-07-23 15:19:36,790 INFO L450 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-07-23 15:19:36,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-07-23 15:19:36,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-23 15:19:36,798 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 245 states. [2018-07-23 15:19:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:39,141 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-23 15:19:39,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-07-23 15:19:39,141 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 245 [2018-07-23 15:19:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:39,142 INFO L225 Difference]: With dead ends: 249 [2018-07-23 15:19:39,142 INFO L226 Difference]: Without dead ends: 247 [2018-07-23 15:19:39,145 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-23 15:19:39,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-23 15:19:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-23 15:19:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-23 15:19:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-23 15:19:39,147 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-07-23 15:19:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:39,147 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-23 15:19:39,147 INFO L472 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-07-23 15:19:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-23 15:19:39,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-23 15:19:39,148 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:39,148 INFO L353 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-07-23 15:19:39,148 INFO L414 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:39,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1263780428, now seen corresponding path program 243 times [2018-07-23 15:19:39,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:40,679 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:40,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245] total 245 [2018-07-23 15:19:40,680 INFO L450 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-07-23 15:19:40,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-07-23 15:19:40,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-23 15:19:40,683 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 246 states. [2018-07-23 15:19:42,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:42,976 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-07-23 15:19:42,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-07-23 15:19:42,976 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 246 [2018-07-23 15:19:42,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:42,977 INFO L225 Difference]: With dead ends: 250 [2018-07-23 15:19:42,977 INFO L226 Difference]: Without dead ends: 248 [2018-07-23 15:19:42,978 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-23 15:19:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-23 15:19:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-23 15:19:42,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-23 15:19:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-23 15:19:42,981 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-07-23 15:19:42,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:42,981 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-23 15:19:42,981 INFO L472 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-07-23 15:19:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-23 15:19:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-23 15:19:42,982 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:42,982 INFO L353 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-07-23 15:19:42,982 INFO L414 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:42,982 INFO L82 PathProgramCache]: Analyzing trace with hash 522489411, now seen corresponding path program 244 times [2018-07-23 15:19:42,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:44,560 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:44,560 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246] total 246 [2018-07-23 15:19:44,561 INFO L450 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-07-23 15:19:44,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-07-23 15:19:44,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-23 15:19:44,568 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 247 states. [2018-07-23 15:19:46,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:46,550 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-23 15:19:46,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-07-23 15:19:46,550 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 247 [2018-07-23 15:19:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:46,551 INFO L225 Difference]: With dead ends: 251 [2018-07-23 15:19:46,551 INFO L226 Difference]: Without dead ends: 249 [2018-07-23 15:19:46,554 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-23 15:19:46,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-23 15:19:46,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-23 15:19:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-23 15:19:46,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-23 15:19:46,557 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-07-23 15:19:46,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:46,558 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-23 15:19:46,558 INFO L472 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-07-23 15:19:46,558 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-23 15:19:46,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-23 15:19:46,558 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:46,558 INFO L353 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-07-23 15:19:46,559 INFO L414 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:46,559 INFO L82 PathProgramCache]: Analyzing trace with hash -982695636, now seen corresponding path program 245 times [2018-07-23 15:19:46,559 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:48,161 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:48,161 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247] total 247 [2018-07-23 15:19:48,161 INFO L450 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-07-23 15:19:48,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-07-23 15:19:48,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-23 15:19:48,165 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 248 states. [2018-07-23 15:19:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:49,203 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-07-23 15:19:49,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-07-23 15:19:49,204 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 248 [2018-07-23 15:19:49,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:49,204 INFO L225 Difference]: With dead ends: 252 [2018-07-23 15:19:49,204 INFO L226 Difference]: Without dead ends: 250 [2018-07-23 15:19:49,205 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-23 15:19:49,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-23 15:19:49,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-23 15:19:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-23 15:19:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-23 15:19:49,208 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-07-23 15:19:49,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:49,208 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-23 15:19:49,208 INFO L472 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-07-23 15:19:49,208 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-23 15:19:49,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-23 15:19:49,209 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:49,209 INFO L353 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-07-23 15:19:49,209 INFO L414 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:49,209 INFO L82 PathProgramCache]: Analyzing trace with hash -398791837, now seen corresponding path program 246 times [2018-07-23 15:19:49,209 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:50,840 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:50,841 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248] total 248 [2018-07-23 15:19:50,841 INFO L450 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-07-23 15:19:50,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-07-23 15:19:50,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-23 15:19:50,849 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 249 states. [2018-07-23 15:19:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:52,532 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-23 15:19:52,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-07-23 15:19:52,532 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 249 [2018-07-23 15:19:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:52,533 INFO L225 Difference]: With dead ends: 253 [2018-07-23 15:19:52,533 INFO L226 Difference]: Without dead ends: 251 [2018-07-23 15:19:52,536 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-23 15:19:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-23 15:19:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-23 15:19:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-23 15:19:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-23 15:19:52,539 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 249 [2018-07-23 15:19:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:52,539 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-23 15:19:52,539 INFO L472 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-07-23 15:19:52,539 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-23 15:19:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-23 15:19:52,540 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:52,540 INFO L353 BasicCegarLoop]: trace histogram [247, 1, 1, 1] [2018-07-23 15:19:52,540 INFO L414 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:52,540 INFO L82 PathProgramCache]: Analyzing trace with hash 522356748, now seen corresponding path program 247 times [2018-07-23 15:19:52,540 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:54,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:54,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [249] total 249 [2018-07-23 15:19:54,149 INFO L450 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-07-23 15:19:54,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-07-23 15:19:54,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31125, Invalid=31125, Unknown=0, NotChecked=0, Total=62250 [2018-07-23 15:19:54,153 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 250 states. [2018-07-23 15:19:54,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:54,828 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-07-23 15:19:54,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2018-07-23 15:19:54,828 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 250 [2018-07-23 15:19:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:54,828 INFO L225 Difference]: With dead ends: 254 [2018-07-23 15:19:54,829 INFO L226 Difference]: Without dead ends: 252 [2018-07-23 15:19:54,830 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=31125, Invalid=31125, Unknown=0, NotChecked=0, Total=62250 [2018-07-23 15:19:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-23 15:19:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-23 15:19:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-23 15:19:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-23 15:19:54,833 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 250 [2018-07-23 15:19:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:54,833 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-23 15:19:54,833 INFO L472 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-07-23 15:19:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-23 15:19:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-23 15:19:54,834 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:54,834 INFO L353 BasicCegarLoop]: trace histogram [248, 1, 1, 1] [2018-07-23 15:19:54,834 INFO L414 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:54,834 INFO L82 PathProgramCache]: Analyzing trace with hash -986808189, now seen corresponding path program 248 times [2018-07-23 15:19:54,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:56,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:56,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [250] total 250 [2018-07-23 15:19:56,251 INFO L450 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-07-23 15:19:56,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-07-23 15:19:56,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31375, Invalid=31375, Unknown=0, NotChecked=0, Total=62750 [2018-07-23 15:19:56,258 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 251 states. [2018-07-23 15:19:57,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:57,992 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-23 15:19:57,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-07-23 15:19:57,993 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 251 [2018-07-23 15:19:57,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:57,993 INFO L225 Difference]: With dead ends: 255 [2018-07-23 15:19:57,993 INFO L226 Difference]: Without dead ends: 253 [2018-07-23 15:19:57,996 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31375, Invalid=31375, Unknown=0, NotChecked=0, Total=62750 [2018-07-23 15:19:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-23 15:19:57,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-23 15:19:57,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-23 15:19:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-23 15:19:57,998 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 251 [2018-07-23 15:19:57,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:57,999 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-23 15:19:57,999 INFO L472 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-07-23 15:19:57,999 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-23 15:19:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-23 15:19:57,999 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:57,999 INFO L353 BasicCegarLoop]: trace histogram [249, 1, 1, 1] [2018-07-23 15:19:58,000 INFO L414 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:19:58,000 INFO L82 PathProgramCache]: Analyzing trace with hash -526280980, now seen corresponding path program 249 times [2018-07-23 15:19:58,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:59,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:59,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251] total 251 [2018-07-23 15:19:59,447 INFO L450 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-07-23 15:19:59,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-07-23 15:19:59,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31626, Invalid=31626, Unknown=0, NotChecked=0, Total=63252 [2018-07-23 15:19:59,452 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 252 states. [2018-07-23 15:20:00,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:00,102 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-07-23 15:20:00,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-07-23 15:20:00,103 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 252 [2018-07-23 15:20:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:00,103 INFO L225 Difference]: With dead ends: 256 [2018-07-23 15:20:00,103 INFO L226 Difference]: Without dead ends: 254 [2018-07-23 15:20:00,105 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31626, Invalid=31626, Unknown=0, NotChecked=0, Total=63252 [2018-07-23 15:20:00,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-23 15:20:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-23 15:20:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-23 15:20:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-23 15:20:00,107 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 252 [2018-07-23 15:20:00,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:00,107 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-23 15:20:00,107 INFO L472 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-07-23 15:20:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-23 15:20:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-23 15:20:00,108 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:00,108 INFO L353 BasicCegarLoop]: trace histogram [250, 1, 1, 1] [2018-07-23 15:20:00,108 INFO L414 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:00,108 INFO L82 PathProgramCache]: Analyzing trace with hash 865160611, now seen corresponding path program 250 times [2018-07-23 15:20:00,108 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:01,603 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:01,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [252] total 252 [2018-07-23 15:20:01,604 INFO L450 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-07-23 15:20:01,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-07-23 15:20:01,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31878, Invalid=31878, Unknown=0, NotChecked=0, Total=63756 [2018-07-23 15:20:01,612 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 253 states. [2018-07-23 15:20:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:03,889 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-23 15:20:03,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-07-23 15:20:03,889 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 253 [2018-07-23 15:20:03,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:03,890 INFO L225 Difference]: With dead ends: 257 [2018-07-23 15:20:03,890 INFO L226 Difference]: Without dead ends: 255 [2018-07-23 15:20:03,892 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31878, Invalid=31878, Unknown=0, NotChecked=0, Total=63756 [2018-07-23 15:20:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-23 15:20:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-23 15:20:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-23 15:20:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-23 15:20:03,895 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 253 [2018-07-23 15:20:03,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:03,895 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-23 15:20:03,895 INFO L472 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-07-23 15:20:03,895 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-23 15:20:03,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-23 15:20:03,896 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:03,896 INFO L353 BasicCegarLoop]: trace histogram [251, 1, 1, 1] [2018-07-23 15:20:03,896 INFO L414 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:03,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1050176972, now seen corresponding path program 251 times [2018-07-23 15:20:03,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:20:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:20:05,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:20:05,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [253] total 253 [2018-07-23 15:20:05,337 INFO L450 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-07-23 15:20:05,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-07-23 15:20:05,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32131, Invalid=32131, Unknown=0, NotChecked=0, Total=64262 [2018-07-23 15:20:05,341 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 254 states. [2018-07-23 15:20:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:20:06,130 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-07-23 15:20:06,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2018-07-23 15:20:06,130 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 254 [2018-07-23 15:20:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:20:06,131 INFO L225 Difference]: With dead ends: 258 [2018-07-23 15:20:06,131 INFO L226 Difference]: Without dead ends: 256 [2018-07-23 15:20:06,133 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=32131, Invalid=32131, Unknown=0, NotChecked=0, Total=64262 [2018-07-23 15:20:06,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-23 15:20:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-23 15:20:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-23 15:20:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-07-23 15:20:06,135 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 254 [2018-07-23 15:20:06,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:20:06,136 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-07-23 15:20:06,136 INFO L472 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-07-23 15:20:06,136 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-07-23 15:20:06,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-23 15:20:06,137 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:20:06,137 INFO L353 BasicCegarLoop]: trace histogram [252, 1, 1, 1] [2018-07-23 15:20:06,137 INFO L414 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:20:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1804250429, now seen corresponding path program 252 times [2018-07-23 15:20:06,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:20:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-23 15:20:06,193 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,193 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,193 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,194 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,194 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,194 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,194 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,195 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,195 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,195 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,195 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,196 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,196 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,196 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,196 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,197 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,197 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,197 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,197 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,197 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,198 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,198 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,198 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,198 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,199 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,199 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,199 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,199 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,200 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,200 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,200 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,200 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,200 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,201 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,201 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,201 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,201 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,201 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,202 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,202 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,202 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,202 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,203 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,203 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,203 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,204 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,204 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,204 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,204 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,204 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,205 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,205 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,205 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,205 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,206 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,206 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,206 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,206 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,207 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,207 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,207 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,207 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,207 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,208 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,208 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,208 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,208 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,209 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,209 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,209 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,209 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,209 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,210 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,210 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,210 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,210 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,210 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,211 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2018-07-23 15:20:06,221 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 15:20:06,227 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 15:20:06,227 INFO L202 PluginConnector]: Adding new model const1.i_3.bplTransformedIcfg_BEv2_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:20:06 BoogieIcfgContainer [2018-07-23 15:20:06,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:20:06,228 INFO L168 Benchmark]: Toolchain (without parser) took 258937.54 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -945.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-23 15:20:06,231 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:20:06,231 INFO L168 Benchmark]: Boogie Preprocessor took 49.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:20:06,231 INFO L168 Benchmark]: RCFGBuilder took 222.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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. [2018-07-23 15:20:06,232 INFO L168 Benchmark]: TraceAbstraction took 258661.11 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: -955.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-23 15:20:06,234 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 222.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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 258661.11 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: -955.5 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: 37]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 256 with TraceHistMax 252, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 254 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 258.5s OverallTime, 253 OverallIterations, 252 TraceHistogramMax, 112.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 757 SDtfs, 0 SDslu, 16520 SDs, 0 SdLazy, 48649 SolverSat, 481 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32130 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 31878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 128.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=252, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 252 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 136.7s InterpolantComputationTime, 32382 NumberOfCodeBlocks, 32382 NumberOfCodeBlocksAsserted, 252 NumberOfCheckSat, 32130 ConstructedInterpolants, 0 QuantifiedInterpolants, 16226154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 252 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2667126 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/const1.i_3.bplTransformedIcfg_BEv2_6.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-20-06-242.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/const1.i_3.bplTransformedIcfg_BEv2_6.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-20-06-242.csv Completed graceful shutdown