java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/array2.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:41:47,234 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:41:47,236 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:41:47,252 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:41:47,252 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:41:47,253 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:41:47,255 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:41:47,257 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:41:47,258 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:41:47,259 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:41:47,260 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-25 08:41:47,285 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:41:47,298 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:41:47,299 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:41:47,300 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:41:47,300 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:41:47,301 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:41:47,301 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:41:47,301 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:41:47,301 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:41:47,363 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:41:47,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:41:47,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:41:47,388 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:41:47,389 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:41:47,390 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array2.i_3.bpl [2018-07-25 08:41:47,390 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array2.i_3.bpl' [2018-07-25 08:41:47,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:41:47,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:41:47,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:41:47,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:41:47,448 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:41:47,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/1) ... [2018-07-25 08:41:47,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/1) ... [2018-07-25 08:41:47,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:41:47,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:41:47,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:41:47,490 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:41:47,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/1) ... [2018-07-25 08:41:47,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/1) ... [2018-07-25 08:41:47,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/1) ... [2018-07-25 08:41:47,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/1) ... [2018-07-25 08:41:47,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/1) ... [2018-07-25 08:41:47,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/1) ... [2018-07-25 08:41:47,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/1) ... [2018-07-25 08:41:47,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:41:47,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:41:47,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:41:47,512 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:41:47,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/1) ... [2018-07-25 08:41:47,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:41:47,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:41:47,749 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:41:47,750 INFO L202 PluginConnector]: Adding new model array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:41:47 BoogieIcfgContainer [2018-07-25 08:41:47,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:41:47,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:41:47,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:41:47,756 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:41:47,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:41:47" (1/2) ... [2018-07-25 08:41:47,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fdbc19 and model type array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:41:47, skipping insertion in model container [2018-07-25 08:41:47,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:41:47" (2/2) ... [2018-07-25 08:41:47,761 INFO L112 eAbstractionObserver]: Analyzing ICFG array2.i_3.bpl [2018-07-25 08:41:47,771 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:41:47,780 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:41:47,828 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:41:47,829 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:41:47,830 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:41:47,830 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:41:47,830 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:41:47,830 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:41:47,830 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:41:47,831 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:41:47,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:41:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:41:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:41:47,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:47,856 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:41:47,858 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:47,863 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 08:41:47,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:47,939 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:41:47,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:41:47,944 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:41:47,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:41:47,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:41:47,963 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:41:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:47,991 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 08:41:47,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:41:47,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 08:41:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,004 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:41:48,004 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:41:48,008 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:41:48,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:41:48,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:41:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:41:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:41:48,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:41:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,047 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:41:48,047 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:41:48,047 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:41:48,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:41:48,048 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,048 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:41:48,048 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,049 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-25 08:41:48,049 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,080 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:41:48,083 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:41:48,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:41:48,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:41:48,084 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-25 08:41:48,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,102 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:41:48,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:41:48,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:41:48,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,104 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:41:48,104 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:41:48,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:41:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:41:48,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:41:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:41:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:41:48,109 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:41:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,109 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:41:48,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:41:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:41:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:41:48,110 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,111 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:41:48,111 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,111 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-25 08:41:48,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:41:48,143 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:41:48,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:41:48,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:41:48,144 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-07-25 08:41:48,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,162 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:41:48,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:41:48,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:41:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,163 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:41:48,163 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:41:48,164 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:41:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:41:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:41:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:41:48,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:41:48,168 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 08:41:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,168 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:41:48,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:41:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:41:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:41:48,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,169 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 08:41:48,170 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-07-25 08:41:48,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,212 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:41:48,213 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:41:48,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:41:48,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:41:48,214 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-07-25 08:41:48,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,234 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:41:48,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:41:48,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:41:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,235 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:41:48,235 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:41:48,236 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:41:48,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:41:48,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:41:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:41:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:41:48,241 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 08:41:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,241 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:41:48,241 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:41:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:41:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:41:48,242 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,242 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 08:41:48,243 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-07-25 08:41:48,243 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:41:48,310 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:41:48,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:41:48,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:41:48,311 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-07-25 08:41:48,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,329 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:41:48,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:41:48,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:41:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,330 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:41:48,330 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:41:48,331 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:41:48,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:41:48,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:41:48,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:41:48,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:41:48,336 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 08:41:48,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,336 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:41:48,336 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:41:48,336 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:41:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:41:48,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,337 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 08:41:48,337 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,338 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-07-25 08:41:48,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,399 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,399 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:41:48,399 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:41:48,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:41:48,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:41:48,400 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-07-25 08:41:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,429 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:41:48,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:41:48,430 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:41:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,434 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:41:48,434 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:41:48,435 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:41:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:41:48,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:41:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:41:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:41:48,447 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-25 08:41:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,448 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:41:48,448 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:41:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:41:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:41:48,450 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,450 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-25 08:41:48,450 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,450 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-07-25 08:41:48,451 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,536 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,537 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:41:48,539 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:41:48,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:41:48,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:41:48,543 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-07-25 08:41:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,571 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:41:48,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:41:48,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:41:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,573 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:41:48,573 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:41:48,573 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:41:48,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:41:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:41:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:41:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:41:48,579 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-25 08:41:48,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,579 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:41:48,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:41:48,580 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:41:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:41:48,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,580 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-25 08:41:48,581 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,581 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-07-25 08:41:48,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,641 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,641 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:41:48,641 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:41:48,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:41:48,642 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:41:48,642 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-07-25 08:41:48,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,663 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:41:48,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:41:48,664 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:41:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,664 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:41:48,665 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:41:48,665 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:41:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:41:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:41:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:41:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:41:48,671 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-25 08:41:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,671 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:41:48,671 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:41:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:41:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:41:48,672 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,672 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-25 08:41:48,673 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,673 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-07-25 08:41:48,673 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:41:48,751 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:41:48,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:41:48,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:41:48,752 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-07-25 08:41:48,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,784 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:41:48,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:41:48,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 08:41:48,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,789 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:41:48,789 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:41:48,790 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:41:48,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:41:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:41:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:41:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:41:48,805 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-25 08:41:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,806 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:41:48,806 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:41:48,806 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:41:48,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:41:48,807 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,807 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-25 08:41:48,808 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-07-25 08:41:48,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,873 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,873 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:41:48,874 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:41:48,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:41:48,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:41:48,875 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-07-25 08:41:48,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,893 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:41:48,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:41:48,894 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:41:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,895 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:41:48,895 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:41:48,895 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:41:48,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:41:48,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:41:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:41:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:41:48,901 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-25 08:41:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,902 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:41:48,902 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:41:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:41:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:41:48,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,903 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-25 08:41:48,907 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-07-25 08:41:48,907 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:41:48,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:41:48,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:41:48,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:41:48,974 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-07-25 08:41:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,021 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:41:49,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:41:49,022 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-25 08:41:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,024 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:41:49,024 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:41:49,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:41:49,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:41:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:41:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:41:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:41:49,039 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-25 08:41:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,040 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:41:49,040 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:41:49,040 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:41:49,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:41:49,041 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,043 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-25 08:41:49,044 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,044 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-07-25 08:41:49,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,128 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:41:49,129 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:41:49,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:41:49,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:41:49,133 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-07-25 08:41:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,160 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:41:49,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:41:49,161 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:41:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,161 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:41:49,162 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:41:49,162 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:41:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:41:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:41:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:41:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:41:49,168 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-25 08:41:49,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,169 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:41:49,169 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:41:49,169 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:41:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:41:49,170 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,170 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-25 08:41:49,171 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-07-25 08:41:49,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:41:49,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:41:49,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:41:49,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:41:49,256 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-07-25 08:41:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,292 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:41:49,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:41:49,293 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-25 08:41:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,294 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:41:49,294 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:41:49,295 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:41:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:41:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:41:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:41:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:41:49,313 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-25 08:41:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,316 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:41:49,316 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:41:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:41:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:41:49,317 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,317 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-25 08:41:49,318 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-07-25 08:41:49,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,403 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:41:49,404 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:41:49,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:41:49,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:41:49,408 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-07-25 08:41:49,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,445 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:41:49,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:41:49,445 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:41:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,446 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:41:49,446 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:41:49,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:41:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:41:49,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:41:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:41:49,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:41:49,465 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-25 08:41:49,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,465 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:41:49,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:41:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:41:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:41:49,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,467 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-25 08:41:49,467 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,467 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-07-25 08:41:49,467 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:41:49,523 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:41:49,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:41:49,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:41:49,524 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-07-25 08:41:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,545 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:41:49,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:41:49,546 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-25 08:41:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,547 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:41:49,547 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:41:49,548 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:41:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:41:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:41:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:41:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:41:49,555 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-25 08:41:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,560 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:41:49,560 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:41:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:41:49,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:41:49,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,561 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-25 08:41:49,562 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,562 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-07-25 08:41:49,562 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,641 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,642 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:41:49,643 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:41:49,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:41:49,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:41:49,644 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-07-25 08:41:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,675 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:41:49,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:41:49,675 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:41:49,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,676 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:41:49,676 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:41:49,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:41:49,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:41:49,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:41:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:41:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:41:49,687 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-25 08:41:49,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,688 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:41:49,688 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:41:49,688 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:41:49,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:41:49,689 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,690 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-25 08:41:49,690 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-07-25 08:41:49,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,762 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:41:49,763 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:41:49,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:41:49,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:41:49,764 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-07-25 08:41:49,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,785 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:41:49,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:41:49,785 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-25 08:41:49,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,786 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:41:49,786 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:41:49,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:41:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:41:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:41:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:41:49,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:41:49,798 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-25 08:41:49,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,800 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:41:49,800 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:41:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:41:49,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:41:49,801 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,801 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-25 08:41:49,804 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,804 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-07-25 08:41:49,805 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:41:49,882 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:41:49,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:41:49,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:41:49,883 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-07-25 08:41:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,915 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:41:49,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:41:49,916 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:41:49,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,917 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:41:49,917 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:41:49,918 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:41:49,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:41:49,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:41:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:41:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:41:49,924 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-25 08:41:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,925 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:41:49,925 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:41:49,925 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:41:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:41:49,926 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,926 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-25 08:41:49,926 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-07-25 08:41:49,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:50,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:50,032 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:41:50,032 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:41:50,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:41:50,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:41:50,033 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-07-25 08:41:50,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:50,063 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:41:50,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:41:50,064 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-25 08:41:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:50,065 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:41:50,065 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:41:50,066 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:41:50,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:41:50,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:41:50,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:41:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:41:50,073 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-25 08:41:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:50,074 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:41:50,074 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:41:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:41:50,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:41:50,075 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:50,075 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-25 08:41:50,076 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:50,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-07-25 08:41:50,077 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:50,155 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:50,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:41:50,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:41:50,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:41:50,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:41:50,157 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-07-25 08:41:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:50,180 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:41:50,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:41:50,180 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:41:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:50,181 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:41:50,181 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:41:50,182 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:41:50,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:41:50,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:41:50,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:41:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:41:50,195 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-25 08:41:50,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:50,195 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:41:50,195 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:41:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:41:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:41:50,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:50,200 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-25 08:41:50,200 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:50,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-07-25 08:41:50,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:50,288 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:50,289 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:41:50,289 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:41:50,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:41:50,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:41:50,290 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-07-25 08:41:50,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:50,307 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:41:50,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:41:50,309 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-25 08:41:50,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:50,310 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:41:50,310 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:41:50,311 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:41:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:41:50,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:41:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:41:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:41:50,316 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-25 08:41:50,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:50,316 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:41:50,316 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:41:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:41:50,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:41:50,317 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:50,317 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-25 08:41:50,318 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:50,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-07-25 08:41:50,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:50,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:50,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:41:50,416 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:41:50,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:41:50,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:41:50,417 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-07-25 08:41:50,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:50,434 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:41:50,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:41:50,435 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:41:50,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:50,436 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:41:50,436 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:41:50,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:41:50,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:41:50,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:41:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:41:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:41:50,441 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-25 08:41:50,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:50,442 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:41:50,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:41:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:41:50,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:41:50,442 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:50,443 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-25 08:41:50,443 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:50,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-07-25 08:41:50,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:50,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:50,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:41:50,586 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:41:50,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:41:50,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:41:50,588 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-07-25 08:41:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:50,612 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:41:50,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:41:50,612 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-25 08:41:50,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:50,614 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:41:50,614 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:41:50,615 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:41:50,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:41:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:41:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:41:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:41:50,625 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-25 08:41:50,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:50,625 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:41:50,626 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:41:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:41:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:41:50,626 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:50,630 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-25 08:41:50,630 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:50,630 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-07-25 08:41:50,631 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:50,736 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:50,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:41:50,737 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:41:50,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:41:50,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:41:50,738 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-07-25 08:41:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:50,769 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:41:50,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:41:50,769 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:41:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:50,770 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:41:50,770 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:41:50,771 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:41:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:41:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:41:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:41:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:41:50,777 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-25 08:41:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:50,777 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:41:50,777 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:41:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:41:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:41:50,778 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:50,778 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-25 08:41:50,778 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:50,779 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-07-25 08:41:50,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:50,901 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:50,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:41:50,901 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:41:50,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:41:50,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:41:50,902 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-07-25 08:41:50,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:50,928 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:41:50,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:41:50,929 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-25 08:41:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:50,930 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:41:50,930 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:41:50,931 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:41:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:41:50,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:41:50,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:41:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:41:50,937 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-25 08:41:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:50,937 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:41:50,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:41:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:41:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:41:50,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:50,944 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-25 08:41:50,944 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:50,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-07-25 08:41:50,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:51,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:51,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:41:51,063 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:41:51,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:41:51,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:41:51,065 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-07-25 08:41:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:51,090 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:41:51,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:41:51,091 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:41:51,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:51,092 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:41:51,092 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:41:51,093 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:41:51,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:41:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:41:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:41:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:41:51,098 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-25 08:41:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:51,098 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:41:51,099 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:41:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:41:51,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:41:51,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:51,099 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-25 08:41:51,100 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:51,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-07-25 08:41:51,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:51,230 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:51,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:41:51,231 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:41:51,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:41:51,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:41:51,232 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-07-25 08:41:51,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:51,264 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:41:51,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:41:51,265 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-25 08:41:51,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:51,266 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:41:51,266 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:41:51,269 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:41:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:41:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:41:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:41:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:41:51,273 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-25 08:41:51,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:51,273 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:41:51,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:41:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:41:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:41:51,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:51,274 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-25 08:41:51,274 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:51,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-07-25 08:41:51,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:51,411 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:51,411 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:41:51,411 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:41:51,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:41:51,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:41:51,413 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-07-25 08:41:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:51,436 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:41:51,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:41:51,436 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:41:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:51,437 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:41:51,437 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:41:51,438 INFO L574 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 [2018-07-25 08:41:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:41:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:41:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:41:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:41:51,441 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-25 08:41:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:51,441 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:41:51,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:41:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:41:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:41:51,442 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:51,442 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-25 08:41:51,443 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:51,443 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-07-25 08:41:51,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:51,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:51,584 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:41:51,584 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:41:51,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:41:51,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:41:51,585 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-07-25 08:41:51,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:51,603 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:41:51,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:41:51,604 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-25 08:41:51,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:51,605 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:41:51,605 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:41:51,606 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:41:51,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:41:51,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:41:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:41:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:41:51,609 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-25 08:41:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:51,610 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:41:51,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:41:51,610 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:41:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:41:51,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:51,611 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-25 08:41:51,611 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:51,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-07-25 08:41:51,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:51,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:51,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:41:51,794 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:41:51,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:41:51,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:41:51,795 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-07-25 08:41:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:51,820 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:41:51,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:41:51,820 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:41:51,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:51,821 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:41:51,821 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:41:51,822 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:41:51,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:41:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:41:51,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:41:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:41:51,826 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-25 08:41:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:51,826 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:41:51,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:41:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:41:51,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:41:51,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:51,827 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-25 08:41:51,827 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-07-25 08:41:51,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:51,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:51,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:41:51,959 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:41:51,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:41:51,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:41:51,961 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-07-25 08:41:51,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:51,982 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:41:51,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:41:51,982 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-25 08:41:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:51,983 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:41:51,983 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:41:51,984 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:41:51,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:41:51,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:41:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:41:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:41:51,987 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-25 08:41:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:51,988 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:41:51,988 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:41:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:41:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:41:51,988 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:51,989 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-25 08:41:51,989 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:51,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-07-25 08:41:51,989 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:52,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:52,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:41:52,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:41:52,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:41:52,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:41:52,127 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-07-25 08:41:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:52,147 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:41:52,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:41:52,147 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:41:52,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:52,148 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:41:52,148 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:41:52,149 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:41:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:41:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:41:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:41:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:41:52,155 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-25 08:41:52,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:52,156 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:41:52,156 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:41:52,156 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:41:52,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:41:52,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:52,157 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-25 08:41:52,157 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:52,157 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-07-25 08:41:52,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:52,300 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:52,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:41:52,300 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:41:52,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:41:52,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:41:52,302 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-07-25 08:41:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:52,341 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:41:52,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:41:52,341 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-25 08:41:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:52,342 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:41:52,342 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:41:52,343 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:41:52,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:41:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:41:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:41:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:41:52,347 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-25 08:41:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:52,347 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:41:52,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:41:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:41:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:41:52,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:52,348 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-25 08:41:52,348 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:52,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-07-25 08:41:52,348 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:52,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:52,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:41:52,522 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:41:52,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:41:52,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:41:52,523 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-07-25 08:41:52,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:52,548 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:41:52,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:41:52,548 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:41:52,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:52,549 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:41:52,549 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:41:52,550 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:41:52,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:41:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:41:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:41:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:41:52,554 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-25 08:41:52,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:52,554 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:41:52,554 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:41:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:41:52,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:41:52,555 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:52,555 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-25 08:41:52,556 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:52,556 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-07-25 08:41:52,556 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:52,735 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:52,735 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:41:52,735 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:41:52,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:41:52,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:41:52,737 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-07-25 08:41:52,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:52,759 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:41:52,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:41:52,759 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-25 08:41:52,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:52,760 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:41:52,760 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:41:52,761 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:41:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:41:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:41:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:41:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:41:52,764 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-25 08:41:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:52,764 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:41:52,764 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:41:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:41:52,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:41:52,765 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:52,765 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-25 08:41:52,766 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:52,766 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-07-25 08:41:52,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:52,938 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:52,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:41:52,939 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:41:52,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:41:52,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:41:52,940 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-07-25 08:41:52,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:52,970 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:41:52,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:41:52,970 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:41:52,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:52,971 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:41:52,971 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:41:52,972 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:41:52,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:41:52,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:41:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:41:52,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:41:52,976 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-25 08:41:52,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:52,976 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:41:52,976 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:41:52,976 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:41:52,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:41:52,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:52,977 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-25 08:41:52,977 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:52,977 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-07-25 08:41:52,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:53,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:53,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:41:53,145 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:41:53,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:41:53,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:41:53,147 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-07-25 08:41:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:53,168 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:41:53,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:41:53,169 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-25 08:41:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:53,169 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:41:53,170 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:41:53,171 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:41:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:41:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:41:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:41:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:41:53,174 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-25 08:41:53,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:53,174 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:41:53,174 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:41:53,174 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:41:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:41:53,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:53,175 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-25 08:41:53,175 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:53,176 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-07-25 08:41:53,176 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:53,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:53,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:41:53,344 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:41:53,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:41:53,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:41:53,346 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-07-25 08:41:53,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:53,377 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:41:53,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:41:53,377 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:41:53,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:53,378 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:41:53,378 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:41:53,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:41:53,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:41:53,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:41:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:41:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:41:53,382 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-25 08:41:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:53,383 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:41:53,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:41:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:41:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:41:53,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:53,384 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-25 08:41:53,384 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:53,384 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-07-25 08:41:53,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:53,545 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:53,545 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:41:53,545 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:41:53,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:41:53,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:41:53,547 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-07-25 08:41:53,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:53,574 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:41:53,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:41:53,574 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-25 08:41:53,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:53,575 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:41:53,575 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:41:53,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:41:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:41:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:41:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:41:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:41:53,580 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-25 08:41:53,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:53,580 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:41:53,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:41:53,581 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:41:53,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:41:53,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:53,581 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-25 08:41:53,582 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:53,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-07-25 08:41:53,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:53,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:53,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:41:53,749 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:41:53,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:41:53,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:41:53,750 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-07-25 08:41:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:53,776 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:41:53,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:41:53,777 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:41:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:53,777 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:41:53,778 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:41:53,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:41:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:41:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:41:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:41:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:41:53,782 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-25 08:41:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:53,783 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:41:53,783 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:41:53,783 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:41:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:41:53,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:53,784 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-25 08:41:53,784 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-07-25 08:41:53,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:53,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:53,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:41:53,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:41:53,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:41:53,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:41:53,975 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-07-25 08:41:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:54,004 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:41:54,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:41:54,004 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-25 08:41:54,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:54,005 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:41:54,005 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:41:54,006 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:41:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:41:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:41:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:41:54,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:41:54,011 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-25 08:41:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:54,011 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:41:54,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:41:54,011 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:41:54,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:41:54,012 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:54,012 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-25 08:41:54,013 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:54,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-07-25 08:41:54,013 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:54,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:54,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:41:54,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:41:54,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:41:54,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:41:54,245 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-07-25 08:41:54,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:54,288 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:41:54,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:41:54,288 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:41:54,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:54,289 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:41:54,289 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:41:54,290 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:41:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:41:54,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:41:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:41:54,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:41:54,294 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-25 08:41:54,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:54,294 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:41:54,295 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:41:54,295 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:41:54,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:41:54,296 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:54,296 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-25 08:41:54,296 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:54,296 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-07-25 08:41:54,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:54,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:54,471 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:54,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:41:54,472 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:41:54,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:41:54,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:41:54,474 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-07-25 08:41:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:54,512 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:41:54,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:41:54,512 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-25 08:41:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:54,513 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:41:54,513 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:41:54,516 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:41:54,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:41:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:41:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:41:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:41:54,522 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-25 08:41:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:54,522 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:41:54,522 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:41:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:41:54,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:41:54,523 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:54,523 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-25 08:41:54,524 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:54,524 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-07-25 08:41:54,524 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:54,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:54,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:41:54,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:41:54,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:41:54,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:41:54,704 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-07-25 08:41:54,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:54,735 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:41:54,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:41:54,735 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:41:54,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:54,736 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:41:54,736 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:41:54,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:41:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:41:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:41:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:41:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:41:54,742 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-25 08:41:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:54,743 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:41:54,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:41:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:41:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:41:54,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:54,744 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-25 08:41:54,744 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:54,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-07-25 08:41:54,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:54,931 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:54,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:41:54,932 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:41:54,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:41:54,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:41:54,933 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-07-25 08:41:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:54,975 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:41:54,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:41:54,975 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-25 08:41:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:54,977 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:41:54,977 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:41:54,978 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:41:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:41:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:41:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:41:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:41:54,982 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-25 08:41:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:54,983 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:41:54,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:41:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:41:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:41:54,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:54,985 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-25 08:41:54,985 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:54,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-07-25 08:41:54,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:55,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:55,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:41:55,178 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:41:55,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:41:55,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:41:55,179 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-07-25 08:41:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:55,223 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:41:55,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:41:55,223 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:41:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:55,224 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:41:55,225 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:41:55,225 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:41:55,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:41:55,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:41:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:41:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:41:55,229 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-25 08:41:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:55,230 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:41:55,230 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:41:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:41:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:41:55,231 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:55,231 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-25 08:41:55,232 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:55,232 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-07-25 08:41:55,232 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:55,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:55,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:41:55,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:41:55,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:41:55,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:41:55,434 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-07-25 08:41:55,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:55,474 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:41:55,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:41:55,474 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-25 08:41:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:55,475 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:41:55,476 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:41:55,476 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:41:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:41:55,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:41:55,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:41:55,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:41:55,481 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-25 08:41:55,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:55,482 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:41:55,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:41:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:41:55,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:41:55,483 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:55,483 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-25 08:41:55,483 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:55,483 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-07-25 08:41:55,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:55,697 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:55,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:41:55,698 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:41:55,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:41:55,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:41:55,699 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-07-25 08:41:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:55,742 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:41:55,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:41:55,742 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:41:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:55,743 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:41:55,743 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:41:55,744 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:41:55,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:41:55,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:41:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:41:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:41:55,750 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-25 08:41:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:55,750 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:41:55,751 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:41:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:41:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:41:55,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:55,752 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-25 08:41:55,752 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:55,752 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-07-25 08:41:55,752 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:55,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:55,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:41:55,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:41:55,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:41:55,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:41:55,962 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-07-25 08:41:56,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:56,008 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:41:56,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:41:56,008 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-25 08:41:56,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:56,009 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:41:56,009 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:41:56,010 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:41:56,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:41:56,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:41:56,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:41:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:41:56,014 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-25 08:41:56,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:56,014 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:41:56,015 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:41:56,015 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:41:56,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:41:56,016 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:56,016 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-25 08:41:56,016 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:56,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-07-25 08:41:56,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:56,229 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:56,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:41:56,229 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:41:56,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:41:56,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:41:56,231 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-07-25 08:41:56,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:56,275 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:41:56,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:41:56,275 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:41:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:56,276 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:41:56,276 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:41:56,277 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:41:56,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:41:56,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:41:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:41:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:41:56,282 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-25 08:41:56,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:56,282 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:41:56,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:41:56,282 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:41:56,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:41:56,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:56,284 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-25 08:41:56,284 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:56,284 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-07-25 08:41:56,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:56,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:56,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:41:56,531 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:41:56,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:41:56,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:41:56,533 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-07-25 08:41:56,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:56,577 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:41:56,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:41:56,578 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-25 08:41:56,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:56,579 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:41:56,579 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:41:56,580 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:41:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:41:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:41:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:41:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:41:56,585 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-25 08:41:56,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:56,586 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:41:56,586 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:41:56,586 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:41:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:41:56,587 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:56,587 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-25 08:41:56,588 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-07-25 08:41:56,588 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:56,855 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:56,855 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:41:56,855 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:41:56,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:41:56,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:41:56,857 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-07-25 08:41:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:56,891 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:41:56,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:41:56,891 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:41:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:56,892 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:41:56,892 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:41:56,893 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:41:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:41:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:41:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:41:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:41:56,897 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-25 08:41:56,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:56,898 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:41:56,898 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:41:56,898 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:41:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:41:56,899 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:56,899 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-25 08:41:56,899 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:56,899 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-07-25 08:41:56,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:57,094 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:57,094 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:41:57,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:41:57,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:41:57,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:41:57,096 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-07-25 08:41:57,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:57,151 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:41:57,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:41:57,151 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-25 08:41:57,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:57,152 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:41:57,152 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:41:57,153 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:41:57,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:41:57,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:41:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:41:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:41:57,157 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-25 08:41:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:57,158 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:41:57,158 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:41:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:41:57,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:41:57,159 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:57,159 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-25 08:41:57,159 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:57,159 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-07-25 08:41:57,160 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:57,360 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:57,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:41:57,360 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:41:57,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:41:57,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:41:57,362 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-07-25 08:41:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:57,421 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:41:57,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:41:57,422 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:41:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:57,423 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:41:57,423 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:41:57,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:41:57,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:41:57,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:41:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:41:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:41:57,428 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-25 08:41:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:57,428 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:41:57,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:41:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:41:57,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:41:57,430 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:57,430 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-25 08:41:57,430 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:57,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-07-25 08:41:57,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:57,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:57,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:41:57,658 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:41:57,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:41:57,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:41:57,659 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-07-25 08:41:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:57,723 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:41:57,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:41:57,724 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-25 08:41:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:57,725 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:41:57,726 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:41:57,727 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:41:57,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:41:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:41:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:41:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:41:57,731 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-25 08:41:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:57,731 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:41:57,731 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:41:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:41:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:41:57,732 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:57,733 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-25 08:41:57,733 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:57,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-07-25 08:41:57,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:57,963 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:57,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:41:57,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:41:57,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:41:57,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:41:57,966 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-07-25 08:41:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:58,034 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:41:58,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:41:58,034 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:41:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:58,035 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:41:58,035 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:41:58,037 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:41:58,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:41:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:41:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:41:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:41:58,041 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-25 08:41:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:58,042 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:41:58,042 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:41:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:41:58,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:41:58,043 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:58,043 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-25 08:41:58,043 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:58,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-07-25 08:41:58,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:58,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:58,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:41:58,297 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:41:58,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:41:58,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:41:58,302 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-07-25 08:41:58,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:58,345 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:41:58,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:41:58,346 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-25 08:41:58,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:58,347 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:41:58,347 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:41:58,348 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:41:58,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:41:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:41:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:41:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:41:58,352 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-25 08:41:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:58,352 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:41:58,353 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:41:58,353 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:41:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:41:58,354 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:58,354 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-25 08:41:58,354 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:58,355 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-07-25 08:41:58,355 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:58,608 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:58,608 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:41:58,608 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:41:58,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:41:58,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:41:58,610 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-07-25 08:41:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:58,665 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:41:58,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:41:58,665 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:41:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:58,666 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:41:58,667 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:41:58,668 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:41:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:41:58,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:41:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:41:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:41:58,673 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-25 08:41:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:58,673 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:41:58,673 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:41:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:41:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:41:58,674 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:58,675 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-25 08:41:58,675 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:58,675 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-07-25 08:41:58,675 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:58,950 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:58,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:41:58,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:41:58,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:41:58,952 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:41:58,952 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-07-25 08:41:59,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:59,020 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:41:59,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:41:59,020 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-25 08:41:59,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:59,021 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:41:59,021 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:41:59,023 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:41:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:41:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:41:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:41:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:41:59,027 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-25 08:41:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:59,028 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:41:59,028 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:41:59,028 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:41:59,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:41:59,029 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:59,029 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-25 08:41:59,029 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:59,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-07-25 08:41:59,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:59,347 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:59,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:41:59,348 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:41:59,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:41:59,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:41:59,350 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-07-25 08:41:59,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:59,407 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:41:59,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:41:59,407 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:41:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:59,408 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:41:59,409 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:41:59,410 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:41:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:41:59,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:41:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:41:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:41:59,415 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-25 08:41:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:59,416 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:41:59,416 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:41:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:41:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:41:59,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:59,417 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-25 08:41:59,418 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:59,418 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-07-25 08:41:59,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:59,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:59,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:41:59,743 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:41:59,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:41:59,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:41:59,745 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-07-25 08:41:59,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:59,814 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:41:59,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:41:59,815 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-25 08:41:59,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:59,816 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:41:59,816 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:41:59,817 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:41:59,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:41:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:41:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:41:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:41:59,822 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-25 08:41:59,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:59,822 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:41:59,822 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:41:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:41:59,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:41:59,823 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:59,824 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-25 08:41:59,824 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:59,824 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-07-25 08:41:59,824 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:00,055 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:00,055 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:42:00,055 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:42:00,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:42:00,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:42:00,057 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-07-25 08:42:00,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:00,135 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:42:00,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:42:00,135 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:42:00,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:00,136 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:42:00,136 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:42:00,137 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:42:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:42:00,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:42:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:42:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:42:00,142 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-25 08:42:00,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:00,142 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:42:00,143 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:42:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:42:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:42:00,144 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:00,144 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-25 08:42:00,144 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:00,145 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-07-25 08:42:00,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:00,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:00,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:42:00,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:42:00,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:42:00,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:42:00,389 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-07-25 08:42:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:00,469 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:42:00,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:42:00,469 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-25 08:42:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:00,470 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:42:00,470 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:42:00,472 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:42:00,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:42:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:42:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:42:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:42:00,477 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-25 08:42:00,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:00,477 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:42:00,477 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:42:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:42:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:42:00,478 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:00,479 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-25 08:42:00,479 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:00,479 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-07-25 08:42:00,479 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:00,711 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:00,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:42:00,712 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:42:00,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:42:00,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:42:00,714 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-07-25 08:42:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:00,762 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:42:00,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:42:00,763 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:42:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:00,764 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:42:00,764 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:42:00,765 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:42:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:42:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:42:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:42:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:42:00,771 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-25 08:42:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:00,771 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:42:00,771 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:42:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:42:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:42:00,773 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:00,773 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-25 08:42:00,774 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:00,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-07-25 08:42:00,774 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:01,017 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:01,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:42:01,018 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:42:01,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:42:01,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:42:01,019 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-07-25 08:42:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:01,094 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:42:01,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:42:01,094 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-25 08:42:01,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:01,095 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:42:01,095 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:42:01,096 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:42:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:42:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:42:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:42:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:42:01,101 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-25 08:42:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:01,101 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:42:01,101 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:42:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:42:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:42:01,103 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:01,103 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-25 08:42:01,103 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:01,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-07-25 08:42:01,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:01,356 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:01,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:42:01,356 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:42:01,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:42:01,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:42:01,358 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-07-25 08:42:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:01,450 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:42:01,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:42:01,450 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:42:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:01,451 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:42:01,451 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:42:01,452 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:42:01,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:42:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:42:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:42:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:42:01,457 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-25 08:42:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:01,457 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:42:01,457 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:42:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:42:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:42:01,458 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:01,459 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-25 08:42:01,459 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:01,459 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-07-25 08:42:01,459 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:01,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:01,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:42:01,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:42:01,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:42:01,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:42:01,729 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-07-25 08:42:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:01,826 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:42:01,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:42:01,826 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-25 08:42:01,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:01,828 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:42:01,828 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:42:01,829 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:42:01,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:42:01,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:42:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:42:01,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:42:01,834 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-25 08:42:01,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:01,834 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:42:01,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:42:01,834 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:42:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:42:01,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:01,836 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-25 08:42:01,836 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:01,836 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-07-25 08:42:01,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:02,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:02,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:42:02,147 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:42:02,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:42:02,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:42:02,148 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-07-25 08:42:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:02,236 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:42:02,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:42:02,236 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:42:02,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:02,238 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:42:02,238 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:42:02,238 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:42:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:42:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:42:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:42:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:42:02,243 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-25 08:42:02,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:02,244 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:42:02,244 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:42:02,244 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:42:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:42:02,245 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:02,245 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-25 08:42:02,246 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:02,246 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-07-25 08:42:02,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:02,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:02,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:42:02,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:42:02,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:42:02,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:42:02,516 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-07-25 08:42:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:02,586 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:42:02,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:42:02,587 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-25 08:42:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:02,588 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:42:02,588 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:42:02,589 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:42:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:42:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:42:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:42:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:42:02,594 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-25 08:42:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:02,595 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:42:02,595 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:42:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:42:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:42:02,598 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:02,598 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-25 08:42:02,598 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:02,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-07-25 08:42:02,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:02,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:02,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:42:02,871 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:42:02,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:42:02,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:42:02,873 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-07-25 08:42:02,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:02,991 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:42:02,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:42:02,991 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:42:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:02,992 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:42:02,992 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:42:02,993 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:42:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:42:02,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:42:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:42:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:42:02,999 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-25 08:42:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:02,999 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:42:02,999 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:42:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:42:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:42:03,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:03,001 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-25 08:42:03,001 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:03,002 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-07-25 08:42:03,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:03,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:03,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:42:03,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:42:03,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:42:03,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:42:03,311 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-07-25 08:42:03,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:03,432 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:42:03,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:42:03,433 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-25 08:42:03,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:03,434 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:42:03,434 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:42:03,435 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:42:03,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:42:03,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:42:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:42:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:42:03,440 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-25 08:42:03,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:03,440 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:42:03,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:42:03,441 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:42:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:42:03,442 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:03,442 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-25 08:42:03,442 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:03,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-07-25 08:42:03,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:03,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:03,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:42:03,742 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:42:03,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:42:03,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:42:03,744 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-07-25 08:42:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:03,846 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:42:03,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:42:03,847 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:42:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:03,848 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:42:03,848 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:42:03,849 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:42:03,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:42:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:42:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:42:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:42:03,853 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-25 08:42:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:03,854 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:42:03,854 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:42:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:42:03,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:42:03,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:03,856 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-25 08:42:03,856 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:03,856 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-07-25 08:42:03,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:04,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:04,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:42:04,149 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:42:04,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:42:04,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:42:04,150 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-07-25 08:42:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:04,226 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:42:04,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:42:04,227 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-25 08:42:04,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:04,228 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:42:04,228 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:42:04,229 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:42:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:42:04,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:42:04,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:42:04,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:42:04,236 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-25 08:42:04,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:04,236 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:42:04,236 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:42:04,236 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:42:04,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:42:04,237 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:04,238 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-25 08:42:04,238 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:04,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-07-25 08:42:04,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:04,565 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:04,566 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:42:04,566 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:42:04,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:42:04,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:42:04,568 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-07-25 08:42:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:04,670 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:42:04,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:42:04,670 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:42:04,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:04,671 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:42:04,672 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:42:04,673 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:42:04,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:42:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:42:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:42:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:42:04,678 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-25 08:42:04,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:04,678 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:42:04,678 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:42:04,678 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:42:04,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:42:04,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:04,680 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-25 08:42:04,680 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:04,681 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-07-25 08:42:04,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:05,098 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:05,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:42:05,099 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:42:05,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:42:05,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:42:05,100 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-07-25 08:42:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:05,225 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:42:05,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:42:05,226 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-25 08:42:05,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:05,227 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:42:05,227 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:42:05,228 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:42:05,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:42:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:42:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:42:05,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:42:05,233 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-25 08:42:05,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:05,234 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:42:05,234 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:42:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:42:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:42:05,236 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:05,236 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-25 08:42:05,236 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:05,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-07-25 08:42:05,237 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:05,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:05,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:42:05,524 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:42:05,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:42:05,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:42:05,526 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-07-25 08:42:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:05,595 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:42:05,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:42:05,595 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:42:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:05,597 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:42:05,597 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:42:05,598 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:42:05,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:42:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:42:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:42:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:42:05,603 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-25 08:42:05,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:05,603 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:42:05,604 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:42:05,604 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:42:05,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:42:05,605 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:05,605 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-25 08:42:05,606 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:05,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-07-25 08:42:05,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:05,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:05,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:42:05,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:42:05,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:42:05,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:42:05,897 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-07-25 08:42:06,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:06,017 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:42:06,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:42:06,017 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-25 08:42:06,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:06,019 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:42:06,019 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:42:06,021 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:42:06,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:42:06,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:42:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:42:06,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:42:06,027 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-25 08:42:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:06,027 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:42:06,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:42:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:42:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:42:06,029 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:06,029 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-25 08:42:06,030 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:06,030 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-07-25 08:42:06,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:06,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:06,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:42:06,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:42:06,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:42:06,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:42:06,345 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-07-25 08:42:06,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:06,463 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:42:06,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:42:06,463 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:42:06,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:06,464 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:42:06,465 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:42:06,466 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:42:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:42:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:42:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:42:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:42:06,474 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-25 08:42:06,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:06,475 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:42:06,475 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:42:06,475 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:42:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:42:06,476 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:06,477 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-25 08:42:06,477 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:06,477 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-07-25 08:42:06,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:06,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:06,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:42:06,791 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:42:06,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:42:06,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:42:06,793 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-07-25 08:42:06,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:06,866 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:42:06,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:42:06,866 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-25 08:42:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:06,867 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:42:06,867 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:42:06,868 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:42:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:42:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:42:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:42:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:42:06,874 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-25 08:42:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:06,874 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:42:06,874 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:42:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:42:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:42:06,876 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:06,876 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-25 08:42:06,876 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:06,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-07-25 08:42:06,876 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:07,181 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:07,181 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:42:07,182 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:42:07,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:42:07,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:42:07,184 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-07-25 08:42:07,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:07,319 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:42:07,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:42:07,319 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:42:07,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:07,321 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:42:07,321 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:42:07,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:42:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:42:07,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:42:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:42:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:42:07,327 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-25 08:42:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:07,328 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:42:07,328 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:42:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:42:07,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:42:07,329 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:07,329 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-25 08:42:07,330 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:07,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-07-25 08:42:07,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:07,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:07,670 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:07,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:42:07,671 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:42:07,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:42:07,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:42:07,672 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-07-25 08:42:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:07,805 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:42:07,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:42:07,806 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-25 08:42:07,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:07,807 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:42:07,807 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:42:07,808 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:42:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:42:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:42:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:42:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:42:07,813 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-25 08:42:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:07,813 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:42:07,813 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:42:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:42:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:42:07,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:07,815 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-25 08:42:07,815 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:07,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-07-25 08:42:07,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:08,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:08,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:42:08,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:42:08,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:42:08,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:42:08,148 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-07-25 08:42:08,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:08,335 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:42:08,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:42:08,335 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:42:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:08,336 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:42:08,337 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:42:08,338 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:42:08,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:42:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:42:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:42:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:42:08,344 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-25 08:42:08,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:08,344 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:42:08,344 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:42:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:42:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:42:08,346 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:08,346 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-25 08:42:08,347 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:08,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-07-25 08:42:08,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:08,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:08,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:42:08,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:42:08,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:42:08,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:42:08,698 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-07-25 08:42:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:08,892 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:42:08,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:42:08,893 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-25 08:42:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:08,894 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:42:08,894 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:42:08,895 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:42:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:42:08,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:42:08,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:42:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:42:08,902 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-25 08:42:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:08,902 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:42:08,902 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:42:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:42:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:42:08,904 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:08,904 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-25 08:42:08,905 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-07-25 08:42:08,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:09,268 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:09,268 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:42:09,269 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:42:09,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:42:09,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:42:09,271 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-07-25 08:42:09,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:09,473 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:42:09,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:42:09,473 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:42:09,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:09,475 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:42:09,475 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:42:09,476 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:42:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:42:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:42:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:42:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:42:09,482 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-25 08:42:09,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:09,482 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:42:09,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:42:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:42:09,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:42:09,484 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:09,484 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-25 08:42:09,484 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:09,485 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-07-25 08:42:09,485 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:09,827 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:09,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:42:09,827 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:42:09,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:42:09,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:42:09,830 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-07-25 08:42:09,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:09,995 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:42:09,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:42:09,995 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-25 08:42:09,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:09,996 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:42:09,996 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:42:09,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:42:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:42:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:42:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:42:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:42:10,004 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-25 08:42:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:10,005 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:42:10,005 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:42:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:42:10,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:42:10,007 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:10,007 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-25 08:42:10,008 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:10,008 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-07-25 08:42:10,008 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:10,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:10,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:42:10,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:42:10,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:42:10,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:42:10,369 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-07-25 08:42:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:10,534 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:42:10,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:42:10,534 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:42:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:10,536 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:42:10,536 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:42:10,538 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:42:10,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:42:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:42:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:42:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:42:10,544 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-25 08:42:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:10,545 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:42:10,545 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:42:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:42:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:42:10,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:10,548 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-25 08:42:10,549 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:10,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-07-25 08:42:10,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:11,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:11,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:42:11,057 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:42:11,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:42:11,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:42:11,061 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-07-25 08:42:11,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:11,158 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:42:11,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:42:11,159 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-25 08:42:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:11,160 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:42:11,160 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:42:11,162 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:42:11,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:42:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:42:11,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:42:11,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:42:11,169 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-25 08:42:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:11,169 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:42:11,169 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:42:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:42:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:42:11,176 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:11,176 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-25 08:42:11,177 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:11,177 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-07-25 08:42:11,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:11,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:11,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:42:11,588 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:42:11,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:42:11,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:42:11,590 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-07-25 08:42:11,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:11,752 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:42:11,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:42:11,752 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:42:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:11,753 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:42:11,754 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:42:11,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:42:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:42:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:42:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:42:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:42:11,760 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-25 08:42:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:11,760 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:42:11,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:42:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:42:11,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:42:11,762 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:11,762 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-25 08:42:11,762 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:11,763 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-07-25 08:42:11,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:12,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:12,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:42:12,106 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:42:12,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:42:12,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:42:12,107 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-07-25 08:42:12,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:12,255 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:42:12,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:42:12,255 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-25 08:42:12,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:12,257 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:42:12,257 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:42:12,258 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:42:12,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:42:12,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:42:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:42:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:42:12,264 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-25 08:42:12,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:12,268 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:42:12,268 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:42:12,268 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:42:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:42:12,271 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:12,271 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-25 08:42:12,272 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:12,272 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-07-25 08:42:12,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:12,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:12,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:42:12,635 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:42:12,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:42:12,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:42:12,636 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-07-25 08:42:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:12,772 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:42:12,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:42:12,773 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:42:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:12,774 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:42:12,774 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:42:12,775 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:42:12,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:42:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:42:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:42:12,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:42:12,788 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-25 08:42:12,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:12,790 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:42:12,790 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:42:12,790 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:42:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:42:12,792 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:12,792 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-25 08:42:12,792 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:12,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-07-25 08:42:12,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:13,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:13,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:42:13,155 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:42:13,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:42:13,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:42:13,157 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-07-25 08:42:13,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:13,352 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:42:13,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:42:13,353 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-25 08:42:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:13,355 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:42:13,355 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:42:13,356 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:42:13,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:42:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:42:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:42:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:42:13,363 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-25 08:42:13,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:13,363 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:42:13,363 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:42:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:42:13,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:42:13,364 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:13,365 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-25 08:42:13,365 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:13,365 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-07-25 08:42:13,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:13,808 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:13,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:42:13,809 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:42:13,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:42:13,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:42:13,811 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-07-25 08:42:14,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:14,040 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:42:14,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:42:14,041 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:42:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:14,042 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:42:14,042 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:42:14,043 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:42:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:42:14,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:42:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:42:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:42:14,050 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-25 08:42:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:14,050 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:42:14,050 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:42:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:42:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:42:14,051 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:14,051 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-25 08:42:14,052 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:14,052 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-07-25 08:42:14,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:14,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:14,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:42:14,454 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:42:14,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:42:14,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:42:14,455 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-07-25 08:42:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:14,573 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:42:14,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:42:14,574 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-25 08:42:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:14,575 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:42:14,575 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:42:14,575 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:42:14,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:42:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:42:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:42:14,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:42:14,581 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-25 08:42:14,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:14,581 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:42:14,581 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:42:14,581 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:42:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:42:14,582 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:14,582 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-25 08:42:14,583 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:14,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-07-25 08:42:14,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:14,930 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:14,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:42:14,931 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:42:14,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:42:14,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:42:14,932 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-07-25 08:42:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:15,095 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:42:15,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:42:15,095 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:42:15,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:15,096 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:42:15,096 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:42:15,097 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:42:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:42:15,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:42:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:42:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:42:15,102 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-25 08:42:15,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:15,103 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:42:15,103 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:42:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:42:15,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:42:15,104 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:15,104 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-25 08:42:15,104 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:15,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-07-25 08:42:15,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:15,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:15,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:42:15,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:42:15,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:42:15,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:42:15,475 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-07-25 08:42:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:15,690 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:42:15,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:42:15,691 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-25 08:42:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:15,692 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:42:15,692 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:42:15,693 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:42:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:42:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:42:15,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:42:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:42:15,698 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-25 08:42:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:15,699 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:42:15,699 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:42:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:42:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:42:15,700 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:15,700 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-25 08:42:15,700 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-07-25 08:42:15,701 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:16,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:16,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:42:16,047 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:42:16,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:42:16,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:42:16,048 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-07-25 08:42:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:16,288 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:42:16,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:42:16,288 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:42:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:16,290 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:42:16,290 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:42:16,291 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:42:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:42:16,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:42:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:42:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:42:16,295 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-25 08:42:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:16,296 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:42:16,296 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:42:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:42:16,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:42:16,297 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:16,297 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-25 08:42:16,299 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:16,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-07-25 08:42:16,299 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:16,658 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:16,658 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:42:16,659 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:42:16,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:42:16,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:42:16,660 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-07-25 08:42:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:16,842 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:42:16,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:42:16,843 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-25 08:42:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:16,844 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:42:16,844 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:42:16,845 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:42:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:42:16,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:42:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:42:16,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:42:16,850 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-25 08:42:16,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:16,850 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:42:16,850 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:42:16,850 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:42:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:42:16,851 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:16,851 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-25 08:42:16,851 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:16,852 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-07-25 08:42:16,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:17,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:17,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:42:17,271 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:42:17,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:42:17,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:42:17,273 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-07-25 08:42:17,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:17,479 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:42:17,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:42:17,479 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:42:17,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:17,481 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:42:17,481 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:42:17,482 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:42:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:42:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:42:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:42:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:42:17,487 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-25 08:42:17,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:17,487 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:42:17,487 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:42:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:42:17,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:42:17,488 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:17,488 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-25 08:42:17,489 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:17,489 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-07-25 08:42:17,489 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:17,956 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:17,956 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:42:17,956 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:42:17,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:42:17,957 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:42:17,957 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-07-25 08:42:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:18,103 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:42:18,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:42:18,103 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-25 08:42:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:18,104 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:42:18,104 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:42:18,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:42:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:42:18,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:42:18,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:42:18,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:42:18,110 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-25 08:42:18,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:18,110 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:42:18,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:42:18,111 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:42:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:42:18,112 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:18,112 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-25 08:42:18,112 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:18,112 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-07-25 08:42:18,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:18,504 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:18,504 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:42:18,504 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:42:18,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:42:18,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:42:18,506 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-07-25 08:42:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:18,655 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:42:18,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:42:18,655 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:42:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:18,656 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:42:18,656 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:42:18,657 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:42:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:42:18,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:42:18,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:42:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:42:18,662 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-25 08:42:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:18,662 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:42:18,662 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:42:18,663 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:42:18,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:42:18,664 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:18,664 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-25 08:42:18,664 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:18,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-07-25 08:42:18,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:19,006 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:19,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:42:19,007 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:42:19,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:42:19,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:42:19,008 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-07-25 08:42:19,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:19,075 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:42:19,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:42:19,076 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-25 08:42:19,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:19,077 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:42:19,077 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:42:19,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:42:19,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:42:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:42:19,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:42:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:42:19,083 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-25 08:42:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:19,083 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:42:19,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:42:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:42:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:42:19,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:19,085 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-25 08:42:19,085 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:19,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-07-25 08:42:19,085 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:19,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:19,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:42:19,431 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:42:19,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:42:19,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:42:19,432 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-07-25 08:42:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:19,562 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:42:19,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:42:19,562 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:42:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:19,563 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:42:19,563 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:42:19,564 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:42:19,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:42:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:42:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:42:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:42:19,569 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-25 08:42:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:19,569 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:42:19,569 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:42:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:42:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:42:19,570 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:19,571 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-25 08:42:19,571 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:19,571 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-07-25 08:42:19,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:19,923 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:19,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:42:19,924 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:42:19,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:42:19,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:42:19,925 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-07-25 08:42:20,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:20,149 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:42:20,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:42:20,150 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-25 08:42:20,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:20,150 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:42:20,150 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:42:20,151 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:42:20,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:42:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:42:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:42:20,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:42:20,155 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-07-25 08:42:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:20,156 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:42:20,156 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:42:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:42:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:42:20,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:20,157 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-07-25 08:42:20,157 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:20,158 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-07-25 08:42:20,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:20,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:20,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:42:20,483 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:42:20,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:42:20,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:42:20,484 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-07-25 08:42:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:20,555 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:42:20,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:42:20,556 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:42:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:20,557 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:42:20,557 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:42:20,557 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:42:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:42:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:42:20,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:42:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:42:20,562 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-07-25 08:42:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:20,562 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:42:20,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:42:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:42:20,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:42:20,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:20,563 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-07-25 08:42:20,564 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:20,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-07-25 08:42:20,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:20,935 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:20,935 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:42:20,936 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:42:20,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:42:20,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:42:20,938 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-07-25 08:42:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:21,117 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:42:21,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:42:21,117 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-25 08:42:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:21,118 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:42:21,118 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:42:21,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:42:21,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:42:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:42:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:42:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:42:21,122 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-07-25 08:42:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:21,122 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:42:21,122 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:42:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:42:21,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:42:21,123 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:21,123 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-07-25 08:42:21,123 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:21,123 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-07-25 08:42:21,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:21,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:21,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:42:21,421 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:42:21,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:42:21,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:42:21,423 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-07-25 08:42:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:21,556 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:42:21,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:42:21,556 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:42:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:21,557 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:42:21,557 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:42:21,558 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:42:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:42:21,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:42:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:42:21,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:42:21,563 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-07-25 08:42:21,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:21,563 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:42:21,563 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:42:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:42:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:42:21,564 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:21,564 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-07-25 08:42:21,564 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:21,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-07-25 08:42:21,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:21,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:21,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:42:21,889 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:42:21,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:42:21,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:42:21,891 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-07-25 08:42:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:22,042 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:42:22,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:42:22,042 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-25 08:42:22,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:22,043 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:42:22,043 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:42:22,043 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:42:22,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:42:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:42:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:42:22,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:42:22,047 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-07-25 08:42:22,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:22,048 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:42:22,048 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:42:22,048 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:42:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:42:22,049 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:22,049 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-07-25 08:42:22,049 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:22,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-07-25 08:42:22,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:22,359 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:22,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:42:22,359 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:42:22,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:42:22,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:42:22,361 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-07-25 08:42:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:22,555 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:42:22,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:42:22,555 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:42:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:22,556 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:42:22,556 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:42:22,557 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:42:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:42:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:42:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:42:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:42:22,561 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-07-25 08:42:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:22,562 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:42:22,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:42:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:42:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:42:22,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:22,563 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-07-25 08:42:22,563 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:22,563 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-07-25 08:42:22,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:22,966 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:22,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:42:22,967 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:42:22,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:42:22,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:42:22,969 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-07-25 08:42:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:23,156 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:42:23,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:42:23,156 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-25 08:42:23,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:23,157 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:42:23,157 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:42:23,158 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:42:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:42:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:42:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:42:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:42:23,166 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-07-25 08:42:23,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:23,166 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:42:23,166 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:42:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:42:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:42:23,168 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:23,168 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-07-25 08:42:23,168 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:23,168 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-07-25 08:42:23,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:23,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:23,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:42:23,549 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:42:23,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:42:23,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:42:23,550 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-07-25 08:42:23,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:23,685 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:42:23,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:42:23,685 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:42:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:23,686 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:42:23,686 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:42:23,686 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:42:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:42:23,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:42:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:42:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:42:23,690 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-07-25 08:42:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:23,690 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:42:23,691 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:42:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:42:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:42:23,692 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:23,692 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-07-25 08:42:23,692 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:23,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-07-25 08:42:23,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:24,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:24,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:42:24,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:42:24,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:42:24,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:42:24,038 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-07-25 08:42:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:24,160 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:42:24,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:42:24,160 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-25 08:42:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:24,161 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:42:24,161 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:42:24,162 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:42:24,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:42:24,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:42:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:42:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:42:24,166 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-07-25 08:42:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:24,167 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:42:24,167 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:42:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:42:24,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:42:24,168 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:24,168 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-07-25 08:42:24,168 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:24,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-07-25 08:42:24,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:24,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:24,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:42:24,500 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:42:24,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:42:24,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:42:24,502 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-07-25 08:42:24,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:24,631 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:42:24,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:42:24,631 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:42:24,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:24,632 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:42:24,632 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:42:24,633 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:42:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:42:24,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:42:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:42:24,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:42:24,636 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-07-25 08:42:24,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:24,636 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:42:24,636 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:42:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:42:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:42:24,637 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:24,637 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-07-25 08:42:24,637 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:24,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-07-25 08:42:24,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:24,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:24,965 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:42:24,965 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:42:24,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:42:24,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:42:24,966 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-07-25 08:42:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:25,127 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:42:25,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:42:25,127 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-25 08:42:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:25,127 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:42:25,128 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:42:25,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:42:25,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:42:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:42:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:42:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:42:25,133 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-07-25 08:42:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:25,133 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:42:25,133 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:42:25,133 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:42:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:42:25,134 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:25,134 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-07-25 08:42:25,134 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:25,135 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-07-25 08:42:25,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:25,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:25,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:42:25,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:42:25,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:42:25,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:42:25,517 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-07-25 08:42:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:25,780 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:42:25,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:42:25,780 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 08:42:25,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:25,781 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:42:25,781 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:42:25,782 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:42:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:42:25,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:42:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:42:25,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:42:25,785 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-07-25 08:42:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:25,786 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:42:25,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:42:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:42:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:42:25,786 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:25,787 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-07-25 08:42:25,787 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:25,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-07-25 08:42:25,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:26,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:26,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:42:26,130 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:42:26,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:42:26,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:42:26,132 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-07-25 08:42:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:26,379 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:42:26,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:42:26,379 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-25 08:42:26,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:26,380 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:42:26,380 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:42:26,380 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:42:26,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:42:26,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:42:26,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:42:26,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:42:26,384 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-07-25 08:42:26,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:26,385 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:42:26,385 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:42:26,385 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:42:26,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:42:26,386 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:26,386 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-07-25 08:42:26,386 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:26,387 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-07-25 08:42:26,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:26,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:26,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:42:26,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:42:26,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:42:26,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:42:26,721 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-07-25 08:42:26,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:26,902 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:42:26,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:42:26,902 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 08:42:26,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:26,903 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:42:26,903 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:42:26,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:42:26,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:42:26,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:42:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:42:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:42:26,909 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-07-25 08:42:26,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:26,909 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:42:26,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:42:26,909 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:42:26,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:42:26,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:26,910 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-07-25 08:42:26,911 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:26,911 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-07-25 08:42:26,911 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:27,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:27,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:42:27,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:42:27,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:42:27,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:42:27,271 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-07-25 08:42:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:27,483 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:42:27,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:42:27,483 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-07-25 08:42:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:27,483 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:42:27,483 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:42:27,484 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:42:27,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:42:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:42:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:42:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:42:27,487 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-07-25 08:42:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:27,487 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:42:27,487 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:42:27,487 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:42:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:42:27,488 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:27,488 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-07-25 08:42:27,488 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:27,488 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-07-25 08:42:27,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:27,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:27,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:42:27,838 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:42:27,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:42:27,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:42:27,840 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-07-25 08:42:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:27,989 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:42:27,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:42:27,989 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 08:42:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:27,990 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:42:27,990 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:42:27,991 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:42:27,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:42:27,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:42:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:42:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 08:42:27,994 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-07-25 08:42:27,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:27,994 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 08:42:27,994 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:42:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 08:42:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:42:27,995 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:27,995 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-07-25 08:42:27,995 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:27,995 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-07-25 08:42:27,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:28,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:28,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:42:28,513 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:42:28,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:42:28,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:42:28,514 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 121 states. [2018-07-25 08:42:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:28,689 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:42:28,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:42:28,689 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 240 [2018-07-25 08:42:28,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:28,690 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:42:28,690 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:42:28,691 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:42:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:42:28,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:42:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:42:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 08:42:28,694 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-07-25 08:42:28,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:28,695 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 08:42:28,695 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:42:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 08:42:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:42:28,696 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:28,696 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-07-25 08:42:28,696 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:28,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1239446717, now seen corresponding path program 119 times [2018-07-25 08:42:28,697 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:29,080 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:29,080 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:42:29,080 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:42:29,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:42:29,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:42:29,082 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 122 states. [2018-07-25 08:42:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:29,316 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:42:29,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:42:29,316 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 08:42:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:29,317 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:42:29,317 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:42:29,318 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:42:29,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:42:29,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:42:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:42:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 08:42:29,322 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-07-25 08:42:29,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:29,322 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 08:42:29,322 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:42:29,322 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 08:42:29,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:42:29,323 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:29,323 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-07-25 08:42:29,323 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:29,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1402406135, now seen corresponding path program 120 times [2018-07-25 08:42:29,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:29,733 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:29,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:42:29,733 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:42:29,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:42:29,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:42:29,735 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 123 states. [2018-07-25 08:42:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:30,005 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:42:30,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:42:30,005 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 244 [2018-07-25 08:42:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:30,006 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:42:30,006 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:42:30,007 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:42:30,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:42:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:42:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:42:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 08:42:30,012 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-07-25 08:42:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:30,012 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 08:42:30,012 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:42:30,012 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 08:42:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:42:30,013 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:30,013 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-07-25 08:42:30,014 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:30,014 INFO L82 PathProgramCache]: Analyzing trace with hash -907383119, now seen corresponding path program 121 times [2018-07-25 08:42:30,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:30,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:30,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:42:30,405 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:42:30,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:42:30,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:42:30,407 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 124 states. [2018-07-25 08:42:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:30,556 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:42:30,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:42:30,556 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 08:42:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:30,556 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:42:30,556 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:42:30,557 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:42:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:42:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:42:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:42:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 08:42:30,562 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-07-25 08:42:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:30,562 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 08:42:30,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:42:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 08:42:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:42:30,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:30,563 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-07-25 08:42:30,564 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:30,564 INFO L82 PathProgramCache]: Analyzing trace with hash -116764181, now seen corresponding path program 122 times [2018-07-25 08:42:30,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:30,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:30,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:42:30,983 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:42:30,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:42:30,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:42:30,985 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 125 states. [2018-07-25 08:42:31,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,209 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 08:42:31,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:42:31,210 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 248 [2018-07-25 08:42:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,210 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:42:31,211 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:42:31,212 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:42:31,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:42:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 08:42:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:42:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 08:42:31,217 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-07-25 08:42:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,217 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 08:42:31,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:42:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 08:42:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:42:31,218 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,218 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-07-25 08:42:31,218 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,219 INFO L82 PathProgramCache]: Analyzing trace with hash -541176155, now seen corresponding path program 123 times [2018-07-25 08:42:31,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:31,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:31,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:42:31,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:42:31,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:42:31,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:42:31,703 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 126 states. [2018-07-25 08:42:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,835 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 08:42:31,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:42:31,835 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 08:42:31,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,836 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:42:31,836 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:42:31,837 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:42:31,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:42:31,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:42:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:42:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 08:42:31,841 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-07-25 08:42:31,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,841 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 08:42:31,841 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:42:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 08:42:31,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:42:31,842 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,842 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-07-25 08:42:31,843 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,843 INFO L82 PathProgramCache]: Analyzing trace with hash -379190049, now seen corresponding path program 124 times [2018-07-25 08:42:31,843 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:32,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:42:32,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:42:32,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:42:32,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:42:32,241 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 127 states. [2018-07-25 08:42:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:32,547 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 08:42:32,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:42:32,547 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 252 [2018-07-25 08:42:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:32,548 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:42:32,548 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:42:32,548 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:42:32,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:42:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 08:42:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:42:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 08:42:32,551 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-07-25 08:42:32,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:32,552 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 08:42:32,552 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:42:32,552 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 08:42:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:42:32,553 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:32,553 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-07-25 08:42:32,553 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:32,553 INFO L82 PathProgramCache]: Analyzing trace with hash 670635161, now seen corresponding path program 125 times [2018-07-25 08:42:32,553 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:32,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:42:32,943 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:42:32,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:42:32,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:42:32,945 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 128 states. [2018-07-25 08:42:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,118 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 08:42:33,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:42:33,118 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 08:42:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,118 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:42:33,118 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:42:33,120 INFO L574 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 [2018-07-25 08:42:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:42:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:42:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:42:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-25 08:42:33,124 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-07-25 08:42:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,125 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-25 08:42:33,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:42:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-25 08:42:33,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:42:33,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,126 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-07-25 08:42:33,126 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,126 INFO L82 PathProgramCache]: Analyzing trace with hash 235347411, now seen corresponding path program 126 times [2018-07-25 08:42:33,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:33,544 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:33,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:42:33,545 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:42:33,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:42:33,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:42:33,546 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 129 states. [2018-07-25 08:42:33,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,858 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 08:42:33,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:42:33,858 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 256 [2018-07-25 08:42:33,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,859 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:42:33,859 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:42:33,860 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:42:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:42:33,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 08:42:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:42:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-07-25 08:42:33,864 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-07-25 08:42:33,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,865 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-07-25 08:42:33,865 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:42:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-07-25 08:42:33,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:42:33,866 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,866 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-07-25 08:42:33,866 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1464352627, now seen corresponding path program 127 times [2018-07-25 08:42:33,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:34,317 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:34,317 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:42:34,318 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:42:34,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:42:34,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:42:34,321 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 130 states. [2018-07-25 08:42:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:34,441 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 08:42:34,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:42:34,441 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 08:42:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:34,442 INFO L225 Difference]: With dead ends: 263 [2018-07-25 08:42:34,442 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 08:42:34,443 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:42:34,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 08:42:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 08:42:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:42:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-07-25 08:42:34,450 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-07-25 08:42:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:34,450 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-07-25 08:42:34,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:42:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-07-25 08:42:34,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:42:34,452 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:34,452 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-07-25 08:42:34,453 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:34,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1506450631, now seen corresponding path program 128 times [2018-07-25 08:42:34,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:34,993 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:34,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:42:34,993 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:42:34,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:42:34,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:42:34,995 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 131 states. [2018-07-25 08:42:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:35,265 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 08:42:35,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:42:35,265 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 260 [2018-07-25 08:42:35,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:35,266 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:42:35,266 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:42:35,267 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:42:35,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:42:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-25 08:42:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:42:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-07-25 08:42:35,270 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-07-25 08:42:35,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:35,271 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-07-25 08:42:35,271 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:42:35,271 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-07-25 08:42:35,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:42:35,272 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:35,272 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-07-25 08:42:35,273 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:35,273 INFO L82 PathProgramCache]: Analyzing trace with hash 295129729, now seen corresponding path program 129 times [2018-07-25 08:42:35,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:35,691 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:35,691 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:42:35,691 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:42:35,692 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:42:35,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:42:35,693 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 132 states. [2018-07-25 08:42:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:36,013 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 08:42:36,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:42:36,013 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 08:42:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:36,014 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:42:36,014 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:42:36,015 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:42:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:42:36,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:42:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:42:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-07-25 08:42:36,020 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-07-25 08:42:36,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:36,020 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-07-25 08:42:36,020 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:42:36,020 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-07-25 08:42:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:42:36,021 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:36,021 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-07-25 08:42:36,022 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:36,022 INFO L82 PathProgramCache]: Analyzing trace with hash 151880123, now seen corresponding path program 130 times [2018-07-25 08:42:36,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:36,490 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:36,490 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:42:36,491 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:42:36,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:42:36,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:42:36,493 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 133 states. [2018-07-25 08:42:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:36,676 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 08:42:36,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:42:36,676 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 264 [2018-07-25 08:42:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:36,676 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:42:36,676 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:42:36,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:42:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:42:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-25 08:42:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:42:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-07-25 08:42:36,682 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-07-25 08:42:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:36,682 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-07-25 08:42:36,682 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:42:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-07-25 08:42:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:42:36,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:36,683 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-07-25 08:42:36,684 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:36,684 INFO L82 PathProgramCache]: Analyzing trace with hash -72037771, now seen corresponding path program 131 times [2018-07-25 08:42:36,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:37,116 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:37,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:42:37,116 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:42:37,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:42:37,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:42:37,118 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 134 states. [2018-07-25 08:42:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:37,430 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 08:42:37,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:42:37,430 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 08:42:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:37,431 INFO L225 Difference]: With dead ends: 271 [2018-07-25 08:42:37,431 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:42:37,432 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:42:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:42:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 08:42:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:42:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-07-25 08:42:37,436 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-07-25 08:42:37,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:37,436 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-07-25 08:42:37,436 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:42:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-07-25 08:42:37,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:42:37,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:37,438 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-07-25 08:42:37,438 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:37,438 INFO L82 PathProgramCache]: Analyzing trace with hash -508769105, now seen corresponding path program 132 times [2018-07-25 08:42:37,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:37,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:37,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:42:37,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:42:37,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:42:37,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:42:37,927 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 135 states. [2018-07-25 08:42:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:38,340 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 08:42:38,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:42:38,340 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 268 [2018-07-25 08:42:38,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:38,341 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:42:38,341 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:42:38,342 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:42:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:42:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 08:42:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:42:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-07-25 08:42:38,346 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-07-25 08:42:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:38,347 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-07-25 08:42:38,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:42:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-07-25 08:42:38,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:42:38,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:38,348 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-07-25 08:42:38,348 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:38,348 INFO L82 PathProgramCache]: Analyzing trace with hash 699213929, now seen corresponding path program 133 times [2018-07-25 08:42:38,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:39,116 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:39,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:42:39,116 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:42:39,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:42:39,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:42:39,118 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 136 states. [2018-07-25 08:42:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:39,364 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 08:42:39,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:42:39,364 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 08:42:39,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:39,365 INFO L225 Difference]: With dead ends: 275 [2018-07-25 08:42:39,365 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:42:39,365 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:42:39,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:42:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:42:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:42:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-07-25 08:42:39,370 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-07-25 08:42:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:39,370 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-07-25 08:42:39,370 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:42:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-07-25 08:42:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:42:39,371 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:39,371 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-07-25 08:42:39,372 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:39,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1929739683, now seen corresponding path program 134 times [2018-07-25 08:42:39,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:39,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:39,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:42:39,840 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:42:39,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:42:39,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:42:39,841 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 137 states. [2018-07-25 08:42:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:39,986 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 08:42:39,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:42:39,987 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 272 [2018-07-25 08:42:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:39,987 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:42:39,987 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:42:39,989 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:42:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:42:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-25 08:42:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:42:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-07-25 08:42:39,993 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-07-25 08:42:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:39,994 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-07-25 08:42:39,994 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:42:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-07-25 08:42:39,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:42:39,995 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:39,995 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-07-25 08:42:39,995 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:39,996 INFO L82 PathProgramCache]: Analyzing trace with hash -945984419, now seen corresponding path program 135 times [2018-07-25 08:42:39,996 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:40,569 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:40,570 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:42:40,570 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:42:40,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:42:40,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:42:40,572 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 138 states. [2018-07-25 08:42:40,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:40,940 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 08:42:40,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:42:40,940 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 08:42:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:40,941 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:42:40,941 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:42:40,942 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:42:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:42:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:42:40,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:42:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-07-25 08:42:40,945 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-07-25 08:42:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:40,945 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-07-25 08:42:40,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:42:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-07-25 08:42:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:42:40,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:40,946 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-07-25 08:42:40,946 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:40,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1442092183, now seen corresponding path program 136 times [2018-07-25 08:42:40,946 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:41,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:41,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:42:41,421 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:42:41,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:42:41,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:42:41,423 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 139 states. [2018-07-25 08:42:41,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:41,822 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 08:42:41,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:42:41,822 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 276 [2018-07-25 08:42:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:41,823 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:42:41,823 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:42:41,824 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:42:41,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:42:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-25 08:42:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:42:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-07-25 08:42:41,828 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-07-25 08:42:41,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:41,828 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-07-25 08:42:41,829 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:42:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-07-25 08:42:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:42:41,830 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:41,830 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-07-25 08:42:41,830 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:41,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1423796655, now seen corresponding path program 137 times [2018-07-25 08:42:41,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:42,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:42,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:42:42,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:42:42,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:42:42,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:42:42,410 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 140 states. [2018-07-25 08:42:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:42,784 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 08:42:42,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:42:42,784 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 08:42:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:42,785 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:42:42,785 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:42:42,786 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:42:42,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:42:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 08:42:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:42:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-07-25 08:42:42,791 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-07-25 08:42:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:42,791 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-07-25 08:42:42,791 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:42:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-07-25 08:42:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:42:42,793 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:42,793 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-07-25 08:42:42,793 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:42,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1826034059, now seen corresponding path program 138 times [2018-07-25 08:42:42,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:43,400 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:43,400 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:42:43,400 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:42:43,401 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:42:43,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:42:43,402 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 141 states. [2018-07-25 08:42:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:43,794 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 08:42:43,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:42:43,794 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 280 [2018-07-25 08:42:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:43,795 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:42:43,795 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:42:43,796 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:42:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:42:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 08:42:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:42:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-07-25 08:42:43,800 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-07-25 08:42:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:43,800 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-07-25 08:42:43,801 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:42:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-07-25 08:42:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:42:43,802 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:43,802 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-07-25 08:42:43,802 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:43,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1822841275, now seen corresponding path program 139 times [2018-07-25 08:42:43,802 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:44,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:44,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:42:44,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:42:44,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:42:44,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:42:44,293 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 142 states. [2018-07-25 08:42:44,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:44,702 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 08:42:44,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:42:44,702 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 08:42:44,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:44,702 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:42:44,702 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 08:42:44,703 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:42:44,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 08:42:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 08:42:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:42:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-07-25 08:42:44,706 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-07-25 08:42:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:44,706 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-07-25 08:42:44,706 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:42:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-07-25 08:42:44,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:42:44,707 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:44,707 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-07-25 08:42:44,707 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:44,708 INFO L82 PathProgramCache]: Analyzing trace with hash 596243583, now seen corresponding path program 140 times [2018-07-25 08:42:44,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:45,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:45,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:42:45,200 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:42:45,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:42:45,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:42:45,202 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 143 states. [2018-07-25 08:42:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:45,641 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 08:42:45,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:42:45,642 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 284 [2018-07-25 08:42:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:45,642 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:42:45,643 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:42:45,644 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:42:45,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:42:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-25 08:42:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:42:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-07-25 08:42:45,649 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-07-25 08:42:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:45,649 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-07-25 08:42:45,649 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:42:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-07-25 08:42:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:42:45,650 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:45,650 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-07-25 08:42:45,651 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:45,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1759484985, now seen corresponding path program 141 times [2018-07-25 08:42:45,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:46,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:46,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:42:46,263 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:42:46,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:42:46,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:42:46,264 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 144 states. [2018-07-25 08:42:46,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:46,691 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 08:42:46,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:42:46,691 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 08:42:46,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:46,692 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:42:46,692 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:42:46,693 INFO L574 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 [2018-07-25 08:42:46,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:42:46,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:42:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:42:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-07-25 08:42:46,697 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-07-25 08:42:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:46,697 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-07-25 08:42:46,698 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:42:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-07-25 08:42:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:42:46,699 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:46,699 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-07-25 08:42:46,699 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:46,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1351991949, now seen corresponding path program 142 times [2018-07-25 08:42:46,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:47,527 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:47,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:42:47,527 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:42:47,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:42:47,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:42:47,530 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 145 states. [2018-07-25 08:42:48,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:48,070 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 08:42:48,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:42:48,070 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 288 [2018-07-25 08:42:48,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:48,070 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:42:48,071 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:42:48,072 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:42:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:42:48,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-25 08:42:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:42:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-07-25 08:42:48,075 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-07-25 08:42:48,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:48,075 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-07-25 08:42:48,075 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:42:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-07-25 08:42:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:42:48,076 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:48,076 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-07-25 08:42:48,076 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:48,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2110879789, now seen corresponding path program 143 times [2018-07-25 08:42:48,077 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:48,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:48,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:42:48,594 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:42:48,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:42:48,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:42:48,596 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 146 states. [2018-07-25 08:42:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:48,905 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 08:42:48,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:42:48,905 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 08:42:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:48,905 INFO L225 Difference]: With dead ends: 295 [2018-07-25 08:42:48,906 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:42:48,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:42:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:42:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 08:42:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:42:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-07-25 08:42:48,912 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-07-25 08:42:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:48,912 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-07-25 08:42:48,912 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:42:48,912 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-07-25 08:42:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:42:48,913 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:48,913 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-07-25 08:42:48,914 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:48,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965607, now seen corresponding path program 144 times [2018-07-25 08:42:48,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:49,569 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:49,569 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:42:49,569 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:42:49,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:42:49,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:42:49,572 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 147 states. [2018-07-25 08:42:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:49,750 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 08:42:49,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:42:49,750 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 292 [2018-07-25 08:42:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:49,751 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:42:49,751 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:42:49,752 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:42:49,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:42:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 08:42:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:42:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-07-25 08:42:49,756 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-07-25 08:42:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:49,756 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-07-25 08:42:49,756 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:42:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-07-25 08:42:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:42:49,757 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:49,757 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-07-25 08:42:49,757 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:49,758 INFO L82 PathProgramCache]: Analyzing trace with hash -842253791, now seen corresponding path program 145 times [2018-07-25 08:42:49,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:50,329 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:50,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:42:50,329 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:42:50,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:42:50,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:42:50,330 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 148 states. [2018-07-25 08:42:50,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:50,783 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 08:42:50,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:42:50,783 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 08:42:50,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:50,784 INFO L225 Difference]: With dead ends: 299 [2018-07-25 08:42:50,784 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 08:42:50,785 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:42:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 08:42:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 08:42:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:42:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-07-25 08:42:50,788 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-07-25 08:42:50,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:50,788 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-07-25 08:42:50,788 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:42:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-07-25 08:42:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:42:50,789 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:50,789 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-07-25 08:42:50,789 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:50,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1951989413, now seen corresponding path program 146 times [2018-07-25 08:42:50,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:51,328 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:51,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:42:51,328 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:42:51,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:42:51,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:42:51,330 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 149 states. [2018-07-25 08:42:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:51,912 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 08:42:51,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:42:51,912 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 296 [2018-07-25 08:42:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:51,913 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:42:51,913 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:42:51,914 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:42:51,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:42:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-25 08:42:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:42:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-07-25 08:42:51,919 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-07-25 08:42:51,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:51,919 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-07-25 08:42:51,919 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:42:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-07-25 08:42:51,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:42:51,921 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:51,921 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-07-25 08:42:51,921 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:51,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1038934549, now seen corresponding path program 147 times [2018-07-25 08:42:51,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:52,547 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:52,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:42:52,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:42:52,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:42:52,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:42:52,550 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 150 states. [2018-07-25 08:42:53,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:53,123 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 08:42:53,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:42:53,123 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 08:42:53,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:53,123 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:42:53,123 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:42:53,124 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:42:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:42:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:42:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:42:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-07-25 08:42:53,128 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-07-25 08:42:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:53,129 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-07-25 08:42:53,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:42:53,129 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-07-25 08:42:53,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:42:53,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:53,130 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-07-25 08:42:53,130 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:53,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1983741007, now seen corresponding path program 148 times [2018-07-25 08:42:53,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:53,773 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:53,773 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:42:53,774 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:42:53,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:42:53,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:42:53,777 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 151 states. [2018-07-25 08:42:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:54,011 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 08:42:54,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:42:54,012 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 300 [2018-07-25 08:42:54,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:54,012 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:42:54,012 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:42:54,014 INFO L574 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 [2018-07-25 08:42:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:42:54,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-25 08:42:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:42:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-07-25 08:42:54,019 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-07-25 08:42:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:54,019 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-07-25 08:42:54,019 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:42:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-07-25 08:42:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:42:54,020 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:54,020 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-07-25 08:42:54,021 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:54,021 INFO L82 PathProgramCache]: Analyzing trace with hash -590319607, now seen corresponding path program 149 times [2018-07-25 08:42:54,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:54,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:54,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:42:54,758 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:42:54,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:42:54,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:42:54,760 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 152 states. [2018-07-25 08:42:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:55,425 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 08:42:55,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:42:55,426 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 08:42:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:55,427 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:42:55,427 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:42:55,428 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:42:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:42:55,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 08:42:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:42:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-07-25 08:42:55,431 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-07-25 08:42:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:55,431 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-07-25 08:42:55,431 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:42:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-07-25 08:42:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:42:55,432 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:55,432 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-07-25 08:42:55,432 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:55,432 INFO L82 PathProgramCache]: Analyzing trace with hash -361407165, now seen corresponding path program 150 times [2018-07-25 08:42:55,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:55,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:55,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:42:55,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:42:55,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:42:55,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:42:55,989 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 153 states. [2018-07-25 08:42:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:56,571 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 08:42:56,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:42:56,572 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 304 [2018-07-25 08:42:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:56,572 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:42:56,572 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:42:56,573 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:42:56,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:42:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 08:42:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:42:56,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-07-25 08:42:56,576 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-07-25 08:42:56,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:56,577 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-07-25 08:42:56,577 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:42:56,577 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-07-25 08:42:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:42:56,578 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:56,578 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-07-25 08:42:56,578 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:56,579 INFO L82 PathProgramCache]: Analyzing trace with hash 580117501, now seen corresponding path program 151 times [2018-07-25 08:42:56,579 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:57,213 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:57,213 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:42:57,213 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:42:57,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:42:57,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:42:57,216 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 154 states. [2018-07-25 08:42:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:57,695 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 08:42:57,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:42:57,695 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 08:42:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:57,696 INFO L225 Difference]: With dead ends: 311 [2018-07-25 08:42:57,696 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 08:42:57,697 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:42:57,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 08:42:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 08:42:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:42:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-07-25 08:42:57,702 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-07-25 08:42:57,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:57,702 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-07-25 08:42:57,703 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:42:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-07-25 08:42:57,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:42:57,704 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:57,704 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-07-25 08:42:57,704 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:57,704 INFO L82 PathProgramCache]: Analyzing trace with hash -852777929, now seen corresponding path program 152 times [2018-07-25 08:42:57,704 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:58,403 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:58,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:42:58,403 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:42:58,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:42:58,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:42:58,404 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 155 states. [2018-07-25 08:42:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:58,976 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 08:42:58,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:42:58,976 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 308 [2018-07-25 08:42:58,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:58,977 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:42:58,977 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:42:58,978 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:42:58,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:42:58,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-25 08:42:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:42:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-07-25 08:42:58,981 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-07-25 08:42:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:58,981 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-07-25 08:42:58,981 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:42:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-07-25 08:42:58,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:42:58,982 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:58,982 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-07-25 08:42:58,982 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:58,982 INFO L82 PathProgramCache]: Analyzing trace with hash 819215857, now seen corresponding path program 153 times [2018-07-25 08:42:58,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:59,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:59,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:42:59,579 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:42:59,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:42:59,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:42:59,581 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 156 states. [2018-07-25 08:42:59,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:59,901 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 08:42:59,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:42:59,901 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 08:42:59,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:59,902 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:42:59,902 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:42:59,903 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:42:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:42:59,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:42:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:42:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-07-25 08:42:59,906 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-07-25 08:42:59,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:59,907 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-07-25 08:42:59,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:42:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-07-25 08:42:59,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:42:59,908 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:59,908 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-07-25 08:42:59,908 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:59,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1287475499, now seen corresponding path program 154 times [2018-07-25 08:42:59,908 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:00,517 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:00,517 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:43:00,518 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:43:00,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:43:00,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:43:00,520 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 157 states. [2018-07-25 08:43:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:01,168 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 08:43:01,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:43:01,168 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 312 [2018-07-25 08:43:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:01,169 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:43:01,169 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:43:01,170 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:43:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:43:01,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-25 08:43:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:43:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-07-25 08:43:01,174 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-07-25 08:43:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:01,174 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-07-25 08:43:01,174 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:43:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-07-25 08:43:01,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:43:01,176 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:01,176 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-07-25 08:43:01,176 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:01,176 INFO L82 PathProgramCache]: Analyzing trace with hash 313425381, now seen corresponding path program 155 times [2018-07-25 08:43:01,176 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:01,935 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:01,935 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:43:01,935 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:43:01,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:43:01,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:43:01,938 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 158 states. [2018-07-25 08:43:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:02,413 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 08:43:02,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:43:02,413 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 08:43:02,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:02,414 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:43:02,414 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:43:02,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:43:02,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:43:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 08:43:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:43:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-07-25 08:43:02,418 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-07-25 08:43:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:02,418 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-07-25 08:43:02,418 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:43:02,418 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-07-25 08:43:02,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:43:02,419 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:02,419 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-07-25 08:43:02,419 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:02,419 INFO L82 PathProgramCache]: Analyzing trace with hash 554132511, now seen corresponding path program 156 times [2018-07-25 08:43:02,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:03,103 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:03,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:43:03,104 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:43:03,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:43:03,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:43:03,106 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 159 states. [2018-07-25 08:43:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:03,749 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 08:43:03,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:43:03,750 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 316 [2018-07-25 08:43:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:03,750 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:43:03,750 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:43:03,751 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:43:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:43:03,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-25 08:43:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:43:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-07-25 08:43:03,754 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-07-25 08:43:03,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:03,754 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-07-25 08:43:03,754 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:43:03,754 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-07-25 08:43:03,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:43:03,755 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:03,755 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-07-25 08:43:03,755 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:03,756 INFO L82 PathProgramCache]: Analyzing trace with hash -54549543, now seen corresponding path program 157 times [2018-07-25 08:43:03,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:04,392 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:04,392 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:43:04,392 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:43:04,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:43:04,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:43:04,395 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 160 states. [2018-07-25 08:43:05,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:05,211 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 08:43:05,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:43:05,211 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 08:43:05,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:05,212 INFO L225 Difference]: With dead ends: 323 [2018-07-25 08:43:05,212 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 08:43:05,213 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:43:05,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 08:43:05,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 08:43:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:43:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-07-25 08:43:05,216 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-07-25 08:43:05,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:05,216 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-07-25 08:43:05,216 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:43:05,216 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-07-25 08:43:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:43:05,217 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:05,217 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-07-25 08:43:05,217 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:05,217 INFO L82 PathProgramCache]: Analyzing trace with hash -882451181, now seen corresponding path program 158 times [2018-07-25 08:43:05,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:05,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:05,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:43:05,881 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:43:05,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:43:05,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:43:05,883 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 161 states. [2018-07-25 08:43:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:06,145 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 08:43:06,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:43:06,145 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 320 [2018-07-25 08:43:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:06,146 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:43:06,146 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:43:06,147 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:43:06,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:43:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-25 08:43:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:43:06,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-07-25 08:43:06,150 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-07-25 08:43:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:06,150 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-07-25 08:43:06,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:43:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-07-25 08:43:06,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:43:06,151 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:06,151 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-07-25 08:43:06,151 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:06,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1926975539, now seen corresponding path program 159 times [2018-07-25 08:43:06,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:06,815 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:06,816 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:43:06,816 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:43:06,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:43:06,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:43:06,818 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 162 states. [2018-07-25 08:43:07,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:07,543 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 08:43:07,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:43:07,543 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 08:43:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:07,543 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:43:07,543 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:43:07,544 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:43:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:43:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 08:43:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:43:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-07-25 08:43:07,548 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-07-25 08:43:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:07,548 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-07-25 08:43:07,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:43:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-07-25 08:43:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:43:07,549 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:07,549 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-07-25 08:43:07,549 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:07,549 INFO L82 PathProgramCache]: Analyzing trace with hash -692536313, now seen corresponding path program 160 times [2018-07-25 08:43:07,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:08,220 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:08,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:43:08,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:43:08,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:43:08,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:43:08,223 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 163 states. [2018-07-25 08:43:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:09,093 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 08:43:09,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:43:09,093 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 324 [2018-07-25 08:43:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:09,094 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:43:09,094 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:43:09,095 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:43:09,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:43:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-25 08:43:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:43:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-07-25 08:43:09,098 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-07-25 08:43:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:09,098 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-07-25 08:43:09,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:43:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-07-25 08:43:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:43:09,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:09,099 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-07-25 08:43:09,099 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:09,099 INFO L82 PathProgramCache]: Analyzing trace with hash 192586177, now seen corresponding path program 161 times [2018-07-25 08:43:09,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:09,865 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:09,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:43:09,865 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:43:09,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:43:09,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:43:09,867 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 164 states. [2018-07-25 08:43:10,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:10,511 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 08:43:10,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:43:10,511 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 08:43:10,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:10,512 INFO L225 Difference]: With dead ends: 331 [2018-07-25 08:43:10,512 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 08:43:10,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:43:10,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 08:43:10,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 08:43:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:43:10,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-07-25 08:43:10,516 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-07-25 08:43:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:10,516 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-07-25 08:43:10,516 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:43:10,516 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-07-25 08:43:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:43:10,517 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:10,517 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-07-25 08:43:10,517 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:10,517 INFO L82 PathProgramCache]: Analyzing trace with hash 391774459, now seen corresponding path program 162 times [2018-07-25 08:43:10,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:11,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:11,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:43:11,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:43:11,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:43:11,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:43:11,241 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 165 states. [2018-07-25 08:43:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:11,500 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 08:43:11,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:43:11,501 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 328 [2018-07-25 08:43:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:11,501 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:43:11,501 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:43:11,502 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:43:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:43:11,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 08:43:11,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:43:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-07-25 08:43:11,505 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-07-25 08:43:11,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:11,505 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-07-25 08:43:11,506 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:43:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-07-25 08:43:11,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:43:11,506 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:11,507 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-07-25 08:43:11,507 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:11,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1461814859, now seen corresponding path program 163 times [2018-07-25 08:43:11,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:12,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:12,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:43:12,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:43:12,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:43:12,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:43:12,182 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 166 states. [2018-07-25 08:43:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:12,646 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 08:43:12,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:43:12,646 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 08:43:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:12,646 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:43:12,647 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 08:43:12,648 INFO L574 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 [2018-07-25 08:43:12,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 08:43:12,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 08:43:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:43:12,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-07-25 08:43:12,652 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-07-25 08:43:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:12,653 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-07-25 08:43:12,653 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:43:12,653 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-07-25 08:43:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:43:12,654 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:12,654 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-07-25 08:43:12,655 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:12,655 INFO L82 PathProgramCache]: Analyzing trace with hash -349721617, now seen corresponding path program 164 times [2018-07-25 08:43:12,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:13,623 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:13,623 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:43:13,623 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:43:13,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:43:13,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:43:13,626 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 167 states. [2018-07-25 08:43:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:14,425 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 08:43:14,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:43:14,425 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 332 [2018-07-25 08:43:14,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:14,426 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:43:14,426 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:43:14,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:43:14,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:43:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-25 08:43:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:43:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-07-25 08:43:14,430 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-07-25 08:43:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:14,431 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-07-25 08:43:14,431 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:43:14,431 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-07-25 08:43:14,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:43:14,432 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:14,432 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-07-25 08:43:14,432 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:14,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1074972759, now seen corresponding path program 165 times [2018-07-25 08:43:14,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:15,163 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:15,163 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:43:15,163 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:43:15,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:43:15,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:43:15,165 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 168 states. [2018-07-25 08:43:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:16,012 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 08:43:16,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:43:16,012 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 08:43:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:16,013 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:43:16,013 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:43:16,014 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:43:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:43:16,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 08:43:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:43:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-07-25 08:43:16,017 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-07-25 08:43:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:16,017 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-07-25 08:43:16,017 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:43:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-07-25 08:43:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:43:16,018 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:16,018 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-07-25 08:43:16,018 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:16,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2038349027, now seen corresponding path program 166 times [2018-07-25 08:43:16,018 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:16,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:16,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:43:16,802 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:43:16,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:43:16,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:43:16,804 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 169 states. [2018-07-25 08:43:17,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:17,755 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 08:43:17,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:43:17,756 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 336 [2018-07-25 08:43:17,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:17,756 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:43:17,756 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:43:17,758 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:43:17,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:43:17,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-25 08:43:17,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:43:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-07-25 08:43:17,761 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-07-25 08:43:17,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:17,762 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-07-25 08:43:17,762 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:43:17,762 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-07-25 08:43:17,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:43:17,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:17,763 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-07-25 08:43:17,763 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:17,763 INFO L82 PathProgramCache]: Analyzing trace with hash 348380061, now seen corresponding path program 167 times [2018-07-25 08:43:17,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:18,507 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:18,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:43:18,507 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:43:18,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:43:18,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:43:18,510 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 170 states. [2018-07-25 08:43:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:19,503 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 08:43:19,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:43:19,503 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 08:43:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:19,504 INFO L225 Difference]: With dead ends: 343 [2018-07-25 08:43:19,504 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 08:43:19,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:43:19,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 08:43:19,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 08:43:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:43:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-07-25 08:43:19,508 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-07-25 08:43:19,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:19,508 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-07-25 08:43:19,509 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:43:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-07-25 08:43:19,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:43:19,509 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:19,510 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-07-25 08:43:19,510 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:19,510 INFO L82 PathProgramCache]: Analyzing trace with hash -214158377, now seen corresponding path program 168 times [2018-07-25 08:43:19,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:20,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:20,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:43:20,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:43:20,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:43:20,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:43:20,286 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 171 states. [2018-07-25 08:43:21,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:21,256 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 08:43:21,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:43:21,256 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 340 [2018-07-25 08:43:21,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:21,256 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:43:21,256 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:43:21,258 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:43:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:43:21,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-25 08:43:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:43:21,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-07-25 08:43:21,261 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-07-25 08:43:21,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:21,261 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-07-25 08:43:21,261 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:43:21,261 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-07-25 08:43:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:43:21,262 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:21,262 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-07-25 08:43:21,262 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:21,262 INFO L82 PathProgramCache]: Analyzing trace with hash 352282001, now seen corresponding path program 169 times [2018-07-25 08:43:21,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:22,020 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:22,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:43:22,021 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:43:22,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:43:22,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:43:22,023 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 172 states. [2018-07-25 08:43:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:23,030 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 08:43:23,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:43:23,031 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 08:43:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:23,031 INFO L225 Difference]: With dead ends: 347 [2018-07-25 08:43:23,031 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 08:43:23,032 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:43:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 08:43:23,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 08:43:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:43:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-07-25 08:43:23,036 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-07-25 08:43:23,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:23,036 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-07-25 08:43:23,036 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:43:23,036 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-07-25 08:43:23,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:43:23,037 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:23,037 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-07-25 08:43:23,037 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:23,037 INFO L82 PathProgramCache]: Analyzing trace with hash -759361333, now seen corresponding path program 170 times [2018-07-25 08:43:23,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:23,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:23,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:43:23,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:43:23,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:43:23,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:43:23,823 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 173 states. [2018-07-25 08:43:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:24,841 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 08:43:24,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:43:24,842 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 344 [2018-07-25 08:43:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:24,842 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:43:24,843 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 08:43:24,845 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:43:24,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 08:43:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-25 08:43:24,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:43:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-07-25 08:43:24,850 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-07-25 08:43:24,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:24,850 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-07-25 08:43:24,850 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:43:24,850 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-07-25 08:43:24,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:43:24,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:24,852 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-07-25 08:43:24,852 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:24,852 INFO L82 PathProgramCache]: Analyzing trace with hash 398251397, now seen corresponding path program 171 times [2018-07-25 08:43:24,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:25,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:25,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:43:25,687 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:43:25,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:43:25,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:43:25,690 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 174 states. [2018-07-25 08:43:26,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:26,364 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-25 08:43:26,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:43:26,364 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-25 08:43:26,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:26,365 INFO L225 Difference]: With dead ends: 351 [2018-07-25 08:43:26,365 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 08:43:26,366 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:43:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 08:43:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 08:43:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 08:43:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-07-25 08:43:26,372 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 346 [2018-07-25 08:43:26,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:26,372 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-07-25 08:43:26,372 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:43:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-07-25 08:43:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 08:43:26,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:26,374 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1] [2018-07-25 08:43:26,374 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:26,374 INFO L82 PathProgramCache]: Analyzing trace with hash 467555263, now seen corresponding path program 172 times [2018-07-25 08:43:26,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:27,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:27,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:43:27,271 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:43:27,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:43:27,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:43:27,274 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 175 states. [2018-07-25 08:43:27,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:27,602 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-25 08:43:27,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:43:27,602 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 348 [2018-07-25 08:43:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:27,603 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:43:27,603 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 08:43:27,604 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:43:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 08:43:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-07-25 08:43:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:43:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-07-25 08:43:27,607 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 348 [2018-07-25 08:43:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:27,608 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-07-25 08:43:27,608 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:43:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-07-25 08:43:27,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:43:27,608 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:27,609 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1] [2018-07-25 08:43:27,609 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:27,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1650906247, now seen corresponding path program 173 times [2018-07-25 08:43:27,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:28,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:28,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:43:28,455 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:43:28,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:43:28,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:43:28,456 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 176 states. [2018-07-25 08:43:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:28,951 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-25 08:43:28,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:43:28,951 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-25 08:43:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:28,951 INFO L225 Difference]: With dead ends: 355 [2018-07-25 08:43:28,951 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 08:43:28,952 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:43:28,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 08:43:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 08:43:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 08:43:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-07-25 08:43:28,955 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 350 [2018-07-25 08:43:28,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:28,955 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-07-25 08:43:28,955 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:43:28,955 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-07-25 08:43:28,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 08:43:28,956 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:28,956 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1] [2018-07-25 08:43:28,956 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:28,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1677919053, now seen corresponding path program 174 times [2018-07-25 08:43:28,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:29,755 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:29,755 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:43:29,755 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:43:29,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:43:29,759 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:43:29,759 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 177 states. [2018-07-25 08:43:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:30,999 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-25 08:43:30,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:43:30,999 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 352 [2018-07-25 08:43:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:31,000 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:43:31,000 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:43:31,001 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:43:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:43:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-25 08:43:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:43:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-07-25 08:43:31,004 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 352 [2018-07-25 08:43:31,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:31,004 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-07-25 08:43:31,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:43:31,004 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-07-25 08:43:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:43:31,005 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:31,005 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1] [2018-07-25 08:43:31,005 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:31,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1867421843, now seen corresponding path program 175 times [2018-07-25 08:43:31,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:31,831 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:31,831 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:43:31,831 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:43:31,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:43:31,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:43:31,834 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 178 states. [2018-07-25 08:43:32,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:32,982 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-25 08:43:32,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:43:32,982 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-25 08:43:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:32,983 INFO L225 Difference]: With dead ends: 359 [2018-07-25 08:43:32,983 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 08:43:32,985 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:43:32,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 08:43:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 08:43:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 08:43:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2018-07-25 08:43:32,988 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 354 [2018-07-25 08:43:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:32,988 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2018-07-25 08:43:32,988 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:43:32,988 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2018-07-25 08:43:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 08:43:32,989 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:32,989 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1] [2018-07-25 08:43:32,989 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:32,990 INFO L82 PathProgramCache]: Analyzing trace with hash 703990695, now seen corresponding path program 176 times [2018-07-25 08:43:32,990 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:33,846 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:33,847 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:43:33,847 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:43:33,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:43:33,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:43:33,850 INFO L87 Difference]: Start difference. First operand 357 states and 357 transitions. Second operand 179 states. [2018-07-25 08:43:34,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:34,275 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-25 08:43:34,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:43:34,275 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 356 [2018-07-25 08:43:34,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:34,276 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:43:34,276 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 08:43:34,277 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:43:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 08:43:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-07-25 08:43:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 08:43:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-07-25 08:43:34,280 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 356 [2018-07-25 08:43:34,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:34,281 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-07-25 08:43:34,281 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:43:34,281 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-07-25 08:43:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 08:43:34,282 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:34,282 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1] [2018-07-25 08:43:34,282 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:34,282 INFO L82 PathProgramCache]: Analyzing trace with hash -2069722783, now seen corresponding path program 177 times [2018-07-25 08:43:34,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:35,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:35,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:43:35,101 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:43:35,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:43:35,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:43:35,104 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 180 states. [2018-07-25 08:43:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:36,009 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-25 08:43:36,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:43:36,009 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-25 08:43:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:36,009 INFO L225 Difference]: With dead ends: 363 [2018-07-25 08:43:36,009 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 08:43:36,011 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:43:36,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 08:43:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 08:43:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 08:43:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-07-25 08:43:36,014 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 358 [2018-07-25 08:43:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:36,014 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-07-25 08:43:36,014 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:43:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-07-25 08:43:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 08:43:36,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:36,015 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1] [2018-07-25 08:43:36,015 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:36,015 INFO L82 PathProgramCache]: Analyzing trace with hash -433684325, now seen corresponding path program 178 times [2018-07-25 08:43:36,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:36,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:36,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:43:36,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:43:36,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:43:36,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:43:36,898 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 181 states. [2018-07-25 08:43:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:38,048 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-25 08:43:38,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:43:38,048 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 360 [2018-07-25 08:43:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:38,049 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:43:38,049 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 08:43:38,050 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:43:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 08:43:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-25 08:43:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:43:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-07-25 08:43:38,053 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 360 [2018-07-25 08:43:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:38,053 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-07-25 08:43:38,053 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:43:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-07-25 08:43:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:43:38,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:38,054 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1] [2018-07-25 08:43:38,054 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:38,054 INFO L82 PathProgramCache]: Analyzing trace with hash -158756523, now seen corresponding path program 179 times [2018-07-25 08:43:38,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:38,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:38,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:43:38,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:43:38,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:43:38,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:43:38,907 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 182 states. [2018-07-25 08:43:39,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:39,249 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-25 08:43:39,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:43:39,249 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-25 08:43:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:39,250 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:43:39,250 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 08:43:39,251 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:43:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 08:43:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 08:43:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 08:43:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-07-25 08:43:39,254 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 362 [2018-07-25 08:43:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:39,254 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-07-25 08:43:39,254 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:43:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-07-25 08:43:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 08:43:39,255 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:39,256 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1] [2018-07-25 08:43:39,256 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:39,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2053856143, now seen corresponding path program 180 times [2018-07-25 08:43:39,256 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:40,119 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:40,119 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:43:40,120 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:43:40,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:43:40,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:43:40,123 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 183 states. [2018-07-25 08:43:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:41,550 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-25 08:43:41,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:43:41,550 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 364 [2018-07-25 08:43:41,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:41,551 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:43:41,551 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 08:43:41,552 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:43:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 08:43:41,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-25 08:43:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 08:43:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-07-25 08:43:41,556 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 364 [2018-07-25 08:43:41,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:41,556 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-07-25 08:43:41,556 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:43:41,556 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-07-25 08:43:41,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 08:43:41,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:41,557 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1] [2018-07-25 08:43:41,557 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:41,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1929150647, now seen corresponding path program 181 times [2018-07-25 08:43:41,557 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:42,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:42,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:43:42,443 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:43:42,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:43:42,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:43:42,446 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 184 states. [2018-07-25 08:43:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:42,945 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-25 08:43:42,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:43:42,945 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-25 08:43:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:42,945 INFO L225 Difference]: With dead ends: 371 [2018-07-25 08:43:42,945 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 08:43:42,947 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:43:42,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 08:43:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 08:43:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 08:43:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2018-07-25 08:43:42,950 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 366 [2018-07-25 08:43:42,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:42,950 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2018-07-25 08:43:42,950 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:43:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2018-07-25 08:43:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 08:43:42,951 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:42,951 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1] [2018-07-25 08:43:42,952 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:42,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1512152195, now seen corresponding path program 182 times [2018-07-25 08:43:42,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:43,851 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:43,851 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:43:43,852 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:43:43,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:43:43,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:43:43,855 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 185 states. [2018-07-25 08:43:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:45,345 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-25 08:43:45,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:43:45,345 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 368 [2018-07-25 08:43:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:45,346 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:43:45,346 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 08:43:45,347 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:43:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 08:43:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-25 08:43:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 08:43:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-07-25 08:43:45,351 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 368 [2018-07-25 08:43:45,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:45,351 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-07-25 08:43:45,351 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:43:45,351 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-07-25 08:43:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 08:43:45,352 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:45,352 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1] [2018-07-25 08:43:45,352 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:45,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1479365437, now seen corresponding path program 183 times [2018-07-25 08:43:45,352 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:46,267 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:46,267 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:43:46,267 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:43:46,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:43:46,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:43:46,269 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 186 states. [2018-07-25 08:43:46,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:46,676 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-25 08:43:46,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:43:46,676 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-25 08:43:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:46,677 INFO L225 Difference]: With dead ends: 375 [2018-07-25 08:43:46,677 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 08:43:46,678 INFO L574 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 [2018-07-25 08:43:46,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 08:43:46,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 08:43:46,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 08:43:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-07-25 08:43:46,681 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 370 [2018-07-25 08:43:46,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:46,681 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-07-25 08:43:46,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:43:46,681 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-07-25 08:43:46,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 08:43:46,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:46,682 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1] [2018-07-25 08:43:46,683 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:46,683 INFO L82 PathProgramCache]: Analyzing trace with hash 36062071, now seen corresponding path program 184 times [2018-07-25 08:43:46,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:47,578 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:47,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:43:47,578 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:43:47,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:43:47,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:43:47,581 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 187 states. [2018-07-25 08:43:49,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:49,140 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-25 08:43:49,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:43:49,140 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 372 [2018-07-25 08:43:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:49,141 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:43:49,141 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:43:49,142 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:43:49,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:43:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-07-25 08:43:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 08:43:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-07-25 08:43:49,146 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 372 [2018-07-25 08:43:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:49,146 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-07-25 08:43:49,146 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:43:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-07-25 08:43:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 08:43:49,147 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:49,147 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1] [2018-07-25 08:43:49,147 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash 295963953, now seen corresponding path program 185 times [2018-07-25 08:43:49,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:50,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:50,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:43:50,069 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:43:50,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:43:50,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:43:50,072 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 188 states. [2018-07-25 08:43:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:50,667 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-25 08:43:50,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:43:50,667 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-25 08:43:50,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:50,668 INFO L225 Difference]: With dead ends: 379 [2018-07-25 08:43:50,668 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 08:43:50,668 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:43:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 08:43:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 08:43:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 08:43:50,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-07-25 08:43:50,672 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 374 [2018-07-25 08:43:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:50,672 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-07-25 08:43:50,672 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:43:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-07-25 08:43:50,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 08:43:50,673 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:50,673 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1] [2018-07-25 08:43:50,673 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:50,673 INFO L82 PathProgramCache]: Analyzing trace with hash 953569387, now seen corresponding path program 186 times [2018-07-25 08:43:50,673 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:51,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:51,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:43:51,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:43:51,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:43:51,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:43:51,619 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 189 states. [2018-07-25 08:43:52,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:52,649 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-25 08:43:52,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:43:52,649 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 376 [2018-07-25 08:43:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:52,650 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:43:52,650 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 08:43:52,652 INFO L574 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 [2018-07-25 08:43:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 08:43:52,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-25 08:43:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 08:43:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-07-25 08:43:52,655 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 376 [2018-07-25 08:43:52,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:52,655 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-07-25 08:43:52,656 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:43:52,656 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-07-25 08:43:52,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 08:43:52,657 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:52,657 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1] [2018-07-25 08:43:52,657 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:52,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1552198949, now seen corresponding path program 187 times [2018-07-25 08:43:52,657 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:53,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:53,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:43:53,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:43:53,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:43:53,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:43:53,671 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 190 states. [2018-07-25 08:43:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:55,678 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-25 08:43:55,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:43:55,678 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-25 08:43:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:55,679 INFO L225 Difference]: With dead ends: 383 [2018-07-25 08:43:55,679 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 08:43:55,680 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:43:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 08:43:55,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 08:43:55,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 08:43:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2018-07-25 08:43:55,684 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 378 [2018-07-25 08:43:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:55,684 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2018-07-25 08:43:55,684 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:43:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2018-07-25 08:43:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 08:43:55,685 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:55,686 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1] [2018-07-25 08:43:55,686 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:55,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1309590367, now seen corresponding path program 188 times [2018-07-25 08:43:55,686 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:56,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:56,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:43:56,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:43:56,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:43:56,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:43:56,706 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 191 states. [2018-07-25 08:43:57,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:57,396 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-25 08:43:57,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:43:57,396 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 380 [2018-07-25 08:43:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:57,397 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:43:57,397 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 08:43:57,399 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:43:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 08:43:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-07-25 08:43:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 08:43:57,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-07-25 08:43:57,402 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 380 [2018-07-25 08:43:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:57,402 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-07-25 08:43:57,402 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:43:57,402 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-07-25 08:43:57,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 08:43:57,403 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:57,403 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1] [2018-07-25 08:43:57,404 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:57,404 INFO L82 PathProgramCache]: Analyzing trace with hash 90977049, now seen corresponding path program 189 times [2018-07-25 08:43:57,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:58,404 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:58,404 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:43:58,405 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:43:58,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:43:58,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:43:58,408 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 192 states. [2018-07-25 08:43:59,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:59,054 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-25 08:43:59,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:43:59,054 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-25 08:43:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:59,054 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:43:59,054 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 08:43:59,056 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:43:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 08:43:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 08:43:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 08:43:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-07-25 08:43:59,059 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 382 [2018-07-25 08:43:59,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:59,059 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-07-25 08:43:59,059 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:43:59,059 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-07-25 08:43:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 08:43:59,060 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:59,061 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1] [2018-07-25 08:43:59,061 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:59,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1529650259, now seen corresponding path program 190 times [2018-07-25 08:43:59,061 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:00,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:00,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:44:00,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:44:00,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:44:00,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:44:00,043 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 193 states. [2018-07-25 08:44:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:01,507 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-25 08:44:01,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:44:01,508 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 384 [2018-07-25 08:44:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:01,508 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:44:01,508 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 08:44:01,509 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:44:01,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 08:44:01,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-25 08:44:01,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:44:01,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-07-25 08:44:01,513 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 384 [2018-07-25 08:44:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:01,513 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-07-25 08:44:01,513 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:44:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-07-25 08:44:01,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 08:44:01,515 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:01,515 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1] [2018-07-25 08:44:01,515 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:01,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1115135757, now seen corresponding path program 191 times [2018-07-25 08:44:01,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:02,492 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:02,492 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:44:02,492 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:44:02,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:44:02,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:44:02,498 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 194 states. [2018-07-25 08:44:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:04,298 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-25 08:44:04,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:44:04,299 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-25 08:44:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:04,299 INFO L225 Difference]: With dead ends: 391 [2018-07-25 08:44:04,300 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 08:44:04,302 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:44:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 08:44:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 08:44:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 08:44:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-07-25 08:44:04,308 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 386 [2018-07-25 08:44:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:04,308 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-07-25 08:44:04,308 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:44:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-07-25 08:44:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 08:44:04,309 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:04,309 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1] [2018-07-25 08:44:04,309 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2096309433, now seen corresponding path program 192 times [2018-07-25 08:44:04,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:05,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:05,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:44:05,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:44:05,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:44:05,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:44:05,345 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 195 states. [2018-07-25 08:44:06,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:06,877 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-25 08:44:06,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:44:06,877 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 388 [2018-07-25 08:44:06,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:06,878 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:44:06,878 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 08:44:06,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:44:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 08:44:06,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-07-25 08:44:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:44:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-07-25 08:44:06,883 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 388 [2018-07-25 08:44:06,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:06,883 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-07-25 08:44:06,883 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:44:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-07-25 08:44:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 08:44:06,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:06,884 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1] [2018-07-25 08:44:06,884 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:06,884 INFO L82 PathProgramCache]: Analyzing trace with hash -213651199, now seen corresponding path program 193 times [2018-07-25 08:44:06,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:07,911 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:07,911 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:44:07,911 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:44:07,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:44:07,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:44:07,915 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 196 states. [2018-07-25 08:44:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:09,097 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-25 08:44:09,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:44:09,097 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-25 08:44:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:09,097 INFO L225 Difference]: With dead ends: 395 [2018-07-25 08:44:09,098 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 08:44:09,099 INFO L574 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 [2018-07-25 08:44:09,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 08:44:09,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 08:44:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 08:44:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2018-07-25 08:44:09,103 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 390 [2018-07-25 08:44:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:09,103 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2018-07-25 08:44:09,103 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:44:09,103 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2018-07-25 08:44:09,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 08:44:09,104 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:09,104 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1] [2018-07-25 08:44:09,104 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:09,104 INFO L82 PathProgramCache]: Analyzing trace with hash 839680059, now seen corresponding path program 194 times [2018-07-25 08:44:09,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:10,232 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:10,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:44:10,232 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:44:10,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:44:10,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:44:10,235 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand 197 states. [2018-07-25 08:44:11,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:11,058 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-25 08:44:11,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:44:11,058 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 392 [2018-07-25 08:44:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:11,059 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:44:11,059 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 08:44:11,060 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:44:11,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 08:44:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-25 08:44:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 08:44:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-07-25 08:44:11,063 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 392 [2018-07-25 08:44:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:11,063 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-07-25 08:44:11,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:44:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-07-25 08:44:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 08:44:11,065 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:11,065 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1] [2018-07-25 08:44:11,065 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:11,065 INFO L82 PathProgramCache]: Analyzing trace with hash -521262859, now seen corresponding path program 195 times [2018-07-25 08:44:11,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:12,108 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:12,108 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:44:12,108 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:44:12,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:44:12,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:44:12,112 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 198 states. [2018-07-25 08:44:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:12,802 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-25 08:44:12,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:44:12,802 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-25 08:44:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:12,803 INFO L225 Difference]: With dead ends: 399 [2018-07-25 08:44:12,803 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 08:44:12,805 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:44:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 08:44:12,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 08:44:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 08:44:12,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-07-25 08:44:12,810 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 394 [2018-07-25 08:44:12,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:12,811 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-07-25 08:44:12,811 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:44:12,811 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-07-25 08:44:12,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 08:44:12,813 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:12,813 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1] [2018-07-25 08:44:12,813 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:12,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1577618223, now seen corresponding path program 196 times [2018-07-25 08:44:12,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:13,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:13,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:44:13,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:44:13,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:44:13,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:44:13,914 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 199 states. [2018-07-25 08:44:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:14,651 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-25 08:44:14,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:44:14,651 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 396 [2018-07-25 08:44:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:14,652 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:44:14,652 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 08:44:14,653 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:44:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 08:44:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-07-25 08:44:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 08:44:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-07-25 08:44:14,657 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 396 [2018-07-25 08:44:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:14,657 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-07-25 08:44:14,657 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:44:14,657 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-07-25 08:44:14,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 08:44:14,658 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:14,658 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1] [2018-07-25 08:44:14,658 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:14,658 INFO L82 PathProgramCache]: Analyzing trace with hash -32291095, now seen corresponding path program 197 times [2018-07-25 08:44:14,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:15,714 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:15,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:44:15,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:44:15,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:44:15,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:44:15,718 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 200 states. [2018-07-25 08:44:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:16,504 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-25 08:44:16,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:44:16,504 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-25 08:44:16,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:16,505 INFO L225 Difference]: With dead ends: 403 [2018-07-25 08:44:16,505 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 08:44:16,506 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:44:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 08:44:16,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 08:44:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 08:44:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2018-07-25 08:44:16,510 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 398 [2018-07-25 08:44:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:16,510 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2018-07-25 08:44:16,511 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:44:16,511 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2018-07-25 08:44:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 08:44:16,512 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:16,512 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1] [2018-07-25 08:44:16,512 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:16,512 INFO L82 PathProgramCache]: Analyzing trace with hash -966919133, now seen corresponding path program 198 times [2018-07-25 08:44:16,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:17,661 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:17,661 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:44:17,661 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:44:17,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:44:17,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:44:17,664 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 201 states. [2018-07-25 08:44:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:18,756 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-25 08:44:18,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:44:18,756 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 400 [2018-07-25 08:44:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:18,757 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:44:18,757 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 08:44:18,758 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:44:18,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 08:44:18,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-25 08:44:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 08:44:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-07-25 08:44:18,762 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 400 [2018-07-25 08:44:18,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:18,762 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-07-25 08:44:18,762 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:44:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-07-25 08:44:18,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 08:44:18,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:18,763 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1] [2018-07-25 08:44:18,763 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:18,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1496298787, now seen corresponding path program 199 times [2018-07-25 08:44:18,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:19,862 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:19,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:44:19,863 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:44:19,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:44:19,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:44:19,867 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 202 states. [2018-07-25 08:44:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:21,454 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-25 08:44:21,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:44:21,454 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-25 08:44:21,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:21,455 INFO L225 Difference]: With dead ends: 407 [2018-07-25 08:44:21,455 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 08:44:21,456 INFO L574 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 [2018-07-25 08:44:21,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 08:44:21,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 08:44:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 08:44:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 405 transitions. [2018-07-25 08:44:21,460 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 405 transitions. Word has length 402 [2018-07-25 08:44:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:21,460 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 405 transitions. [2018-07-25 08:44:21,460 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:44:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 405 transitions. [2018-07-25 08:44:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 08:44:21,461 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:21,462 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1] [2018-07-25 08:44:21,462 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:21,462 INFO L82 PathProgramCache]: Analyzing trace with hash 870961943, now seen corresponding path program 200 times [2018-07-25 08:44:21,462 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:22,640 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:22,640 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:44:22,641 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:44:22,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:44:22,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:44:22,643 INFO L87 Difference]: Start difference. First operand 405 states and 405 transitions. Second operand 203 states. [2018-07-25 08:44:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:24,658 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-25 08:44:24,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:44:24,658 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 404 [2018-07-25 08:44:24,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:24,658 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:44:24,659 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 08:44:24,660 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:44:24,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 08:44:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-07-25 08:44:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 08:44:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-07-25 08:44:24,663 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-07-25 08:44:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:24,663 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-07-25 08:44:24,663 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:44:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-07-25 08:44:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 08:44:24,665 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:24,665 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1] [2018-07-25 08:44:24,666 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:24,666 INFO L82 PathProgramCache]: Analyzing trace with hash -524143407, now seen corresponding path program 201 times [2018-07-25 08:44:24,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:25,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:25,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:44:25,802 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:44:25,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:44:25,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:44:25,806 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 204 states. [2018-07-25 08:44:27,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:27,838 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-25 08:44:27,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:44:27,838 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-25 08:44:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:27,838 INFO L225 Difference]: With dead ends: 411 [2018-07-25 08:44:27,839 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 08:44:27,840 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:44:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 08:44:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 08:44:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 08:44:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-07-25 08:44:27,844 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 406 [2018-07-25 08:44:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:27,844 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-07-25 08:44:27,844 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:44:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-07-25 08:44:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 08:44:27,845 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:27,845 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1] [2018-07-25 08:44:27,846 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1190588405, now seen corresponding path program 202 times [2018-07-25 08:44:27,846 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:28,992 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:28,992 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:44:28,992 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:44:28,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:44:28,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:44:28,996 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 205 states. [2018-07-25 08:44:29,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:29,927 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-25 08:44:29,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:44:29,927 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 408 [2018-07-25 08:44:29,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:29,928 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:44:29,928 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 08:44:29,929 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:44:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 08:44:29,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-25 08:44:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:44:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-07-25 08:44:29,932 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 408 [2018-07-25 08:44:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:29,933 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-07-25 08:44:29,933 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:44:29,933 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-07-25 08:44:29,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 08:44:29,934 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:29,934 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1] [2018-07-25 08:44:29,934 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:29,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1694104379, now seen corresponding path program 203 times [2018-07-25 08:44:29,934 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:31,082 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:31,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:44:31,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:44:31,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:44:31,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:44:31,086 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 206 states. [2018-07-25 08:44:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:31,930 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-25 08:44:31,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:44:31,931 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-25 08:44:31,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:31,931 INFO L225 Difference]: With dead ends: 415 [2018-07-25 08:44:31,931 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 08:44:31,933 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:44:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 08:44:31,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 08:44:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 08:44:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-07-25 08:44:31,937 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 410 [2018-07-25 08:44:31,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:31,937 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-07-25 08:44:31,937 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:44:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-07-25 08:44:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 08:44:31,938 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:31,938 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1] [2018-07-25 08:44:31,938 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:31,939 INFO L82 PathProgramCache]: Analyzing trace with hash -241650945, now seen corresponding path program 204 times [2018-07-25 08:44:31,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:33,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:33,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:44:33,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:44:33,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:44:33,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:44:33,099 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 207 states. [2018-07-25 08:44:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:34,904 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-25 08:44:34,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:44:34,904 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 412 [2018-07-25 08:44:34,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:34,905 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:44:34,905 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 08:44:34,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:44:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 08:44:34,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-07-25 08:44:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 08:44:34,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-07-25 08:44:34,911 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 412 [2018-07-25 08:44:34,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:34,912 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-07-25 08:44:34,912 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:44:34,912 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-07-25 08:44:34,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 08:44:34,913 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:34,913 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1] [2018-07-25 08:44:34,913 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:34,913 INFO L82 PathProgramCache]: Analyzing trace with hash -298272071, now seen corresponding path program 205 times [2018-07-25 08:44:34,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:36,073 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:36,073 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:44:36,074 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:44:36,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:44:36,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:44:36,078 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 208 states. [2018-07-25 08:44:38,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:38,238 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-25 08:44:38,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:44:38,238 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-25 08:44:38,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:38,239 INFO L225 Difference]: With dead ends: 419 [2018-07-25 08:44:38,239 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 08:44:38,242 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:44:38,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 08:44:38,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 08:44:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 08:44:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 417 transitions. [2018-07-25 08:44:38,245 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 417 transitions. Word has length 414 [2018-07-25 08:44:38,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:38,246 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 417 transitions. [2018-07-25 08:44:38,246 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:44:38,246 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 417 transitions. [2018-07-25 08:44:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 08:44:38,247 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:38,247 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1] [2018-07-25 08:44:38,247 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:38,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1123400691, now seen corresponding path program 206 times [2018-07-25 08:44:38,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:39,504 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:39,504 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:44:39,504 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:44:39,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:44:39,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:44:39,508 INFO L87 Difference]: Start difference. First operand 417 states and 417 transitions. Second operand 209 states. [2018-07-25 08:44:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:40,491 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-25 08:44:40,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:44:40,491 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 416 [2018-07-25 08:44:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:40,492 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:44:40,492 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 08:44:40,494 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:44:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 08:44:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-25 08:44:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 08:44:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-07-25 08:44:40,497 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 416 [2018-07-25 08:44:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:40,498 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-07-25 08:44:40,498 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:44:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-07-25 08:44:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 08:44:40,499 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:40,499 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1] [2018-07-25 08:44:40,499 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:40,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1551324845, now seen corresponding path program 207 times [2018-07-25 08:44:40,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:41,761 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:41,761 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:44:41,761 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:44:41,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:44:41,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:44:41,766 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 210 states. [2018-07-25 08:44:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,566 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-25 08:44:43,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:44:43,566 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-25 08:44:43,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,567 INFO L225 Difference]: With dead ends: 423 [2018-07-25 08:44:43,567 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 08:44:43,568 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:44:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 08:44:43,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 08:44:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 08:44:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2018-07-25 08:44:43,572 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 418 [2018-07-25 08:44:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,572 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2018-07-25 08:44:43,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:44:43,572 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2018-07-25 08:44:43,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 08:44:43,573 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:43,573 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1] [2018-07-25 08:44:43,573 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:43,574 INFO L82 PathProgramCache]: Analyzing trace with hash 469576423, now seen corresponding path program 208 times [2018-07-25 08:44:43,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:44,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:44,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:44:44,873 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:44:44,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:44:44,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:44:44,877 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand 211 states. [2018-07-25 08:44:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,073 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-25 08:44:46,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:44:46,074 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 420 [2018-07-25 08:44:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,074 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:44:46,074 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 08:44:46,077 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:44:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 08:44:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-07-25 08:44:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 08:44:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-07-25 08:44:46,080 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 420 [2018-07-25 08:44:46,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,080 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-07-25 08:44:46,080 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:44:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-07-25 08:44:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 08:44:46,082 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,082 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1] [2018-07-25 08:44:46,082 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,082 INFO L82 PathProgramCache]: Analyzing trace with hash 291428513, now seen corresponding path program 209 times [2018-07-25 08:44:46,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:47,385 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:47,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:44:47,385 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:44:47,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:44:47,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:44:47,388 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 212 states. [2018-07-25 08:44:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:48,924 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-25 08:44:48,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:44:48,924 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-25 08:44:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:48,925 INFO L225 Difference]: With dead ends: 427 [2018-07-25 08:44:48,925 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 08:44:48,926 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:44:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 08:44:48,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 08:44:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 08:44:48,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 425 transitions. [2018-07-25 08:44:48,930 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 425 transitions. Word has length 422 [2018-07-25 08:44:48,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:48,930 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 425 transitions. [2018-07-25 08:44:48,930 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:44:48,930 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 425 transitions. [2018-07-25 08:44:48,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 08:44:48,931 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:48,931 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1] [2018-07-25 08:44:48,931 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:48,931 INFO L82 PathProgramCache]: Analyzing trace with hash 889978843, now seen corresponding path program 210 times [2018-07-25 08:44:48,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:50,215 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:50,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:44:50,215 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:44:50,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:44:50,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:44:50,220 INFO L87 Difference]: Start difference. First operand 425 states and 425 transitions. Second operand 213 states. [2018-07-25 08:44:52,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,435 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-25 08:44:52,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:44:52,435 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 424 [2018-07-25 08:44:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,436 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:44:52,436 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 08:44:52,438 INFO L574 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 [2018-07-25 08:44:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 08:44:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-25 08:44:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 08:44:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-07-25 08:44:52,441 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 424 [2018-07-25 08:44:52,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,442 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-07-25 08:44:52,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:44:52,442 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-07-25 08:44:52,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 08:44:52,443 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,443 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1] [2018-07-25 08:44:52,443 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,443 INFO L82 PathProgramCache]: Analyzing trace with hash 571228309, now seen corresponding path program 211 times [2018-07-25 08:44:52,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:53,711 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:53,711 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:44:53,711 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:44:53,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:44:53,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:44:53,715 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 214 states. [2018-07-25 08:44:55,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:55,283 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-25 08:44:55,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:44:55,283 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-07-25 08:44:55,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:55,284 INFO L225 Difference]: With dead ends: 431 [2018-07-25 08:44:55,284 INFO L226 Difference]: Without dead ends: 429 [2018-07-25 08:44:55,286 INFO L574 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 [2018-07-25 08:44:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-25 08:44:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-25 08:44:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 08:44:55,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 429 transitions. [2018-07-25 08:44:55,289 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 429 transitions. Word has length 426 [2018-07-25 08:44:55,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:55,290 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 429 transitions. [2018-07-25 08:44:55,290 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:44:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 429 transitions. [2018-07-25 08:44:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 08:44:55,291 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:55,291 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1, 1] [2018-07-25 08:44:55,291 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:55,291 INFO L82 PathProgramCache]: Analyzing trace with hash -805356849, now seen corresponding path program 212 times [2018-07-25 08:44:55,291 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:56,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:56,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:44:56,594 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:44:56,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:44:56,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:44:56,598 INFO L87 Difference]: Start difference. First operand 429 states and 429 transitions. Second operand 215 states. [2018-07-25 08:44:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:57,741 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-07-25 08:44:57,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:44:57,742 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 428 [2018-07-25 08:44:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:57,742 INFO L225 Difference]: With dead ends: 433 [2018-07-25 08:44:57,742 INFO L226 Difference]: Without dead ends: 431 [2018-07-25 08:44:57,744 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:44:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-25 08:44:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-07-25 08:44:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-25 08:44:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-07-25 08:44:57,748 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 428 [2018-07-25 08:44:57,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:57,748 INFO L472 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-07-25 08:44:57,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:44:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-07-25 08:44:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-25 08:44:57,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:57,749 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1, 1] [2018-07-25 08:44:57,750 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:57,750 INFO L82 PathProgramCache]: Analyzing trace with hash -853766519, now seen corresponding path program 213 times [2018-07-25 08:44:57,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:59,061 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:59,061 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:44:59,062 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:44:59,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:44:59,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:44:59,066 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 216 states. [2018-07-25 08:45:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:01,528 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2018-07-25 08:45:01,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:45:01,528 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 430 [2018-07-25 08:45:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:01,529 INFO L225 Difference]: With dead ends: 435 [2018-07-25 08:45:01,529 INFO L226 Difference]: Without dead ends: 433 [2018-07-25 08:45:01,531 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:45:01,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-25 08:45:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-25 08:45:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-25 08:45:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 433 transitions. [2018-07-25 08:45:01,535 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 433 transitions. Word has length 430 [2018-07-25 08:45:01,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:01,535 INFO L472 AbstractCegarLoop]: Abstraction has 433 states and 433 transitions. [2018-07-25 08:45:01,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:45:01,535 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 433 transitions. [2018-07-25 08:45:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-25 08:45:01,536 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:01,536 INFO L354 BasicCegarLoop]: trace histogram [215, 214, 1, 1, 1] [2018-07-25 08:45:01,536 INFO L415 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:01,536 INFO L82 PathProgramCache]: Analyzing trace with hash -130819133, now seen corresponding path program 214 times [2018-07-25 08:45:01,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 0 proven. 46010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:02,948 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:02,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:45:02,949 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:45:02,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:45:02,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:45:02,951 INFO L87 Difference]: Start difference. First operand 433 states and 433 transitions. Second operand 217 states. [2018-07-25 08:45:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:04,159 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-07-25 08:45:04,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:45:04,160 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 432 [2018-07-25 08:45:04,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:04,160 INFO L225 Difference]: With dead ends: 437 [2018-07-25 08:45:04,160 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 08:45:04,161 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:45:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 08:45:04,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-07-25 08:45:04,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-25 08:45:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-07-25 08:45:04,165 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 432 [2018-07-25 08:45:04,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:04,165 INFO L472 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-07-25 08:45:04,165 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:45:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-07-25 08:45:04,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-25 08:45:04,166 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:04,167 INFO L354 BasicCegarLoop]: trace histogram [216, 215, 1, 1, 1] [2018-07-25 08:45:04,167 INFO L415 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:04,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1163083139, now seen corresponding path program 215 times [2018-07-25 08:45:04,167 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 46440 backedges. 0 proven. 46440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:05,543 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:05,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:45:05,543 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:45:05,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:45:05,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:45:05,548 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 218 states. [2018-07-25 08:45:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:08,217 INFO L93 Difference]: Finished difference Result 439 states and 439 transitions. [2018-07-25 08:45:08,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:45:08,217 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 434 [2018-07-25 08:45:08,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:08,218 INFO L225 Difference]: With dead ends: 439 [2018-07-25 08:45:08,218 INFO L226 Difference]: Without dead ends: 437 [2018-07-25 08:45:08,220 INFO L574 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 [2018-07-25 08:45:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-07-25 08:45:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-07-25 08:45:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 08:45:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2018-07-25 08:45:08,224 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 434 [2018-07-25 08:45:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:08,224 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2018-07-25 08:45:08,224 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:45:08,224 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2018-07-25 08:45:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-25 08:45:08,225 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:08,225 INFO L354 BasicCegarLoop]: trace histogram [217, 216, 1, 1, 1] [2018-07-25 08:45:08,226 INFO L415 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:08,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1031347529, now seen corresponding path program 216 times [2018-07-25 08:45:08,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:09,696 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:09,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 08:45:09,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 08:45:09,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 08:45:09,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:45:09,701 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 219 states. [2018-07-25 08:45:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:12,093 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-07-25 08:45:12,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:45:12,093 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 436 [2018-07-25 08:45:12,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:12,094 INFO L225 Difference]: With dead ends: 441 [2018-07-25 08:45:12,094 INFO L226 Difference]: Without dead ends: 439 [2018-07-25 08:45:12,096 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:45:12,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-25 08:45:12,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-07-25 08:45:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-07-25 08:45:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-07-25 08:45:12,099 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 436 [2018-07-25 08:45:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:12,100 INFO L472 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-07-25 08:45:12,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 08:45:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-07-25 08:45:12,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-25 08:45:12,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:12,101 INFO L354 BasicCegarLoop]: trace histogram [218, 217, 1, 1, 1] [2018-07-25 08:45:12,101 INFO L415 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:12,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1012522097, now seen corresponding path program 217 times [2018-07-25 08:45:12,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 47306 backedges. 0 proven. 47306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:13,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:13,483 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:45:13,483 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:45:13,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:45:13,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:45:13,488 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 220 states. [2018-07-25 08:45:14,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:14,401 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2018-07-25 08:45:14,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:45:14,401 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 438 [2018-07-25 08:45:14,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:14,402 INFO L225 Difference]: With dead ends: 443 [2018-07-25 08:45:14,402 INFO L226 Difference]: Without dead ends: 441 [2018-07-25 08:45:14,403 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:45:14,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-07-25 08:45:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-07-25 08:45:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-07-25 08:45:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 441 transitions. [2018-07-25 08:45:14,406 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 441 transitions. Word has length 438 [2018-07-25 08:45:14,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:14,407 INFO L472 AbstractCegarLoop]: Abstraction has 441 states and 441 transitions. [2018-07-25 08:45:14,407 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:45:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 441 transitions. [2018-07-25 08:45:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-25 08:45:14,408 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:14,408 INFO L354 BasicCegarLoop]: trace histogram [219, 218, 1, 1, 1] [2018-07-25 08:45:14,408 INFO L415 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:14,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1923788885, now seen corresponding path program 218 times [2018-07-25 08:45:14,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 47742 backedges. 0 proven. 47742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:15,808 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:15,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 08:45:15,809 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 08:45:15,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 08:45:15,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:45:15,814 INFO L87 Difference]: Start difference. First operand 441 states and 441 transitions. Second operand 221 states. [2018-07-25 08:45:16,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:16,711 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-07-25 08:45:16,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 08:45:16,711 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 440 [2018-07-25 08:45:16,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:16,711 INFO L225 Difference]: With dead ends: 445 [2018-07-25 08:45:16,711 INFO L226 Difference]: Without dead ends: 443 [2018-07-25 08:45:16,713 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:45:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-07-25 08:45:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-07-25 08:45:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-07-25 08:45:16,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-07-25 08:45:16,717 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 440 [2018-07-25 08:45:16,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:16,717 INFO L472 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-07-25 08:45:16,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-25 08:45:16,718 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-07-25 08:45:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-25 08:45:16,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:16,719 INFO L354 BasicCegarLoop]: trace histogram [220, 219, 1, 1, 1] [2018-07-25 08:45:16,719 INFO L415 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:16,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1925129115, now seen corresponding path program 219 times [2018-07-25 08:45:16,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 48180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:18,108 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:18,108 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:45:18,108 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:45:18,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:45:18,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:45:18,112 INFO L87 Difference]: Start difference. First operand 443 states and 443 transitions. Second operand 222 states. [2018-07-25 08:45:20,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:20,439 INFO L93 Difference]: Finished difference Result 447 states and 447 transitions. [2018-07-25 08:45:20,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:45:20,439 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 442 [2018-07-25 08:45:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:20,439 INFO L225 Difference]: With dead ends: 447 [2018-07-25 08:45:20,440 INFO L226 Difference]: Without dead ends: 445 [2018-07-25 08:45:20,441 INFO L574 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 [2018-07-25 08:45:20,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2018-07-25 08:45:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2018-07-25 08:45:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-07-25 08:45:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 445 transitions. [2018-07-25 08:45:20,445 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 445 transitions. Word has length 442 [2018-07-25 08:45:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:20,445 INFO L472 AbstractCegarLoop]: Abstraction has 445 states and 445 transitions. [2018-07-25 08:45:20,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:45:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 445 transitions. [2018-07-25 08:45:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-25 08:45:20,446 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:20,446 INFO L354 BasicCegarLoop]: trace histogram [221, 220, 1, 1, 1] [2018-07-25 08:45:20,446 INFO L415 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:20,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1081877151, now seen corresponding path program 220 times [2018-07-25 08:45:20,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 48620 backedges. 0 proven. 48620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:21,854 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:21,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-25 08:45:21,855 INFO L451 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-25 08:45:21,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-25 08:45:21,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:45:21,860 INFO L87 Difference]: Start difference. First operand 445 states and 445 transitions. Second operand 223 states. [2018-07-25 08:45:24,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:24,921 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-07-25 08:45:24,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 08:45:24,921 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 444 [2018-07-25 08:45:24,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:24,922 INFO L225 Difference]: With dead ends: 449 [2018-07-25 08:45:24,922 INFO L226 Difference]: Without dead ends: 447 [2018-07-25 08:45:24,924 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:45:24,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-07-25 08:45:24,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-07-25 08:45:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-07-25 08:45:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 447 transitions. [2018-07-25 08:45:24,928 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 447 transitions. Word has length 444 [2018-07-25 08:45:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:24,928 INFO L472 AbstractCegarLoop]: Abstraction has 447 states and 447 transitions. [2018-07-25 08:45:24,928 INFO L473 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-25 08:45:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 447 transitions. [2018-07-25 08:45:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-07-25 08:45:24,929 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:24,929 INFO L354 BasicCegarLoop]: trace histogram [222, 221, 1, 1, 1] [2018-07-25 08:45:24,929 INFO L415 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:24,929 INFO L82 PathProgramCache]: Analyzing trace with hash 301908569, now seen corresponding path program 221 times [2018-07-25 08:45:24,930 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 49062 backedges. 0 proven. 49062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:26,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:26,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 08:45:26,322 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 08:45:26,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 08:45:26,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:45:26,328 INFO L87 Difference]: Start difference. First operand 447 states and 447 transitions. Second operand 224 states. [2018-07-25 08:45:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:29,138 INFO L93 Difference]: Finished difference Result 451 states and 451 transitions. [2018-07-25 08:45:29,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:45:29,138 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 446 [2018-07-25 08:45:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:29,139 INFO L225 Difference]: With dead ends: 451 [2018-07-25 08:45:29,139 INFO L226 Difference]: Without dead ends: 449 [2018-07-25 08:45:29,141 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:45:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2018-07-25 08:45:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2018-07-25 08:45:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-07-25 08:45:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 449 transitions. [2018-07-25 08:45:29,145 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 449 transitions. Word has length 446 [2018-07-25 08:45:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:29,145 INFO L472 AbstractCegarLoop]: Abstraction has 449 states and 449 transitions. [2018-07-25 08:45:29,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 08:45:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 449 transitions. [2018-07-25 08:45:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-07-25 08:45:29,146 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:29,146 INFO L354 BasicCegarLoop]: trace histogram [223, 222, 1, 1, 1] [2018-07-25 08:45:29,146 INFO L415 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:29,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1923589229, now seen corresponding path program 222 times [2018-07-25 08:45:29,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 49506 backedges. 0 proven. 49506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:30,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:30,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-25 08:45:30,634 INFO L451 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-25 08:45:30,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-25 08:45:30,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:45:30,639 INFO L87 Difference]: Start difference. First operand 449 states and 449 transitions. Second operand 225 states. [2018-07-25 08:45:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:32,896 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-07-25 08:45:32,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 08:45:32,897 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 448 [2018-07-25 08:45:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:32,897 INFO L225 Difference]: With dead ends: 453 [2018-07-25 08:45:32,897 INFO L226 Difference]: Without dead ends: 451 [2018-07-25 08:45:32,899 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:45:32,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-07-25 08:45:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-07-25 08:45:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-07-25 08:45:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2018-07-25 08:45:32,905 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 448 [2018-07-25 08:45:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:32,905 INFO L472 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2018-07-25 08:45:32,905 INFO L473 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-25 08:45:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2018-07-25 08:45:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-07-25 08:45:32,907 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:32,907 INFO L354 BasicCegarLoop]: trace histogram [224, 223, 1, 1, 1] [2018-07-25 08:45:32,908 INFO L415 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:32,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1733259699, now seen corresponding path program 223 times [2018-07-25 08:45:32,908 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 49952 backedges. 0 proven. 49952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:34,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:34,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 08:45:34,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 08:45:34,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 08:45:34,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:45:34,420 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 226 states. [2018-07-25 08:45:36,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:36,639 INFO L93 Difference]: Finished difference Result 455 states and 455 transitions. [2018-07-25 08:45:36,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:45:36,639 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 450 [2018-07-25 08:45:36,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:36,640 INFO L225 Difference]: With dead ends: 455 [2018-07-25 08:45:36,640 INFO L226 Difference]: Without dead ends: 453 [2018-07-25 08:45:36,642 INFO L574 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 [2018-07-25 08:45:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-07-25 08:45:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-07-25 08:45:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-07-25 08:45:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 453 transitions. [2018-07-25 08:45:36,646 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 453 transitions. Word has length 450 [2018-07-25 08:45:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:36,646 INFO L472 AbstractCegarLoop]: Abstraction has 453 states and 453 transitions. [2018-07-25 08:45:36,646 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 08:45:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 453 transitions. [2018-07-25 08:45:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-07-25 08:45:36,647 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:36,648 INFO L354 BasicCegarLoop]: trace histogram [225, 224, 1, 1, 1] [2018-07-25 08:45:36,648 INFO L415 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:36,648 INFO L82 PathProgramCache]: Analyzing trace with hash 784792199, now seen corresponding path program 224 times [2018-07-25 08:45:36,648 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 50400 backedges. 0 proven. 50400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:38,120 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:38,121 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-25 08:45:38,121 INFO L451 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-25 08:45:38,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-25 08:45:38,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:45:38,126 INFO L87 Difference]: Start difference. First operand 453 states and 453 transitions. Second operand 227 states. [2018-07-25 08:45:40,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:40,265 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-07-25 08:45:40,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-25 08:45:40,265 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 452 [2018-07-25 08:45:40,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:40,266 INFO L225 Difference]: With dead ends: 457 [2018-07-25 08:45:40,266 INFO L226 Difference]: Without dead ends: 455 [2018-07-25 08:45:40,268 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:45:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-07-25 08:45:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-07-25 08:45:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-07-25 08:45:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-07-25 08:45:40,272 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 452 [2018-07-25 08:45:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:40,272 INFO L472 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-07-25 08:45:40,272 INFO L473 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-25 08:45:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-07-25 08:45:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-07-25 08:45:40,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:40,274 INFO L354 BasicCegarLoop]: trace histogram [226, 225, 1, 1, 1] [2018-07-25 08:45:40,274 INFO L415 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:40,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1728888767, now seen corresponding path program 225 times [2018-07-25 08:45:40,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 50850 backedges. 0 proven. 50850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:41,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:41,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-25 08:45:41,927 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 08:45:41,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 08:45:41,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:45:41,930 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 228 states. [2018-07-25 08:45:44,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,191 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2018-07-25 08:45:44,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 08:45:44,191 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 454 [2018-07-25 08:45:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,192 INFO L225 Difference]: With dead ends: 459 [2018-07-25 08:45:44,192 INFO L226 Difference]: Without dead ends: 457 [2018-07-25 08:45:44,194 INFO L574 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 [2018-07-25 08:45:44,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-07-25 08:45:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2018-07-25 08:45:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2018-07-25 08:45:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 457 transitions. [2018-07-25 08:45:44,199 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 457 transitions. Word has length 454 [2018-07-25 08:45:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,200 INFO L472 AbstractCegarLoop]: Abstraction has 457 states and 457 transitions. [2018-07-25 08:45:44,200 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 08:45:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 457 transitions. [2018-07-25 08:45:44,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-07-25 08:45:44,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,202 INFO L354 BasicCegarLoop]: trace histogram [227, 226, 1, 1, 1] [2018-07-25 08:45:44,202 INFO L415 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,202 INFO L82 PathProgramCache]: Analyzing trace with hash 690290555, now seen corresponding path program 226 times [2018-07-25 08:45:44,202 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 51302 backedges. 0 proven. 51302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:45,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:45,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-25 08:45:45,901 INFO L451 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-25 08:45:45,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-25 08:45:45,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:45:45,909 INFO L87 Difference]: Start difference. First operand 457 states and 457 transitions. Second operand 229 states. [2018-07-25 08:45:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:48,541 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2018-07-25 08:45:48,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-25 08:45:48,541 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 456 [2018-07-25 08:45:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:48,542 INFO L225 Difference]: With dead ends: 461 [2018-07-25 08:45:48,542 INFO L226 Difference]: Without dead ends: 459 [2018-07-25 08:45:48,544 INFO L574 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 [2018-07-25 08:45:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-07-25 08:45:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-07-25 08:45:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-07-25 08:45:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 459 transitions. [2018-07-25 08:45:48,548 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 459 transitions. Word has length 456 [2018-07-25 08:45:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:48,548 INFO L472 AbstractCegarLoop]: Abstraction has 459 states and 459 transitions. [2018-07-25 08:45:48,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-25 08:45:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 459 transitions. [2018-07-25 08:45:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-07-25 08:45:48,550 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:48,550 INFO L354 BasicCegarLoop]: trace histogram [228, 227, 1, 1, 1] [2018-07-25 08:45:48,550 INFO L415 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1944311861, now seen corresponding path program 227 times [2018-07-25 08:45:48,550 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 51756 backedges. 0 proven. 51756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:50,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:50,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-25 08:45:50,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-25 08:45:50,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-25 08:45:50,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:45:50,276 INFO L87 Difference]: Start difference. First operand 459 states and 459 transitions. Second operand 230 states. [2018-07-25 08:45:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:53,248 INFO L93 Difference]: Finished difference Result 463 states and 463 transitions. [2018-07-25 08:45:53,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 08:45:53,249 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 458 [2018-07-25 08:45:53,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:53,249 INFO L225 Difference]: With dead ends: 463 [2018-07-25 08:45:53,250 INFO L226 Difference]: Without dead ends: 461 [2018-07-25 08:45:53,253 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:45:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-07-25 08:45:53,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-07-25 08:45:53,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-07-25 08:45:53,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 461 transitions. [2018-07-25 08:45:53,257 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 461 transitions. Word has length 458 [2018-07-25 08:45:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:53,258 INFO L472 AbstractCegarLoop]: Abstraction has 461 states and 461 transitions. [2018-07-25 08:45:53,258 INFO L473 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-25 08:45:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 461 transitions. [2018-07-25 08:45:53,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-07-25 08:45:53,259 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:53,259 INFO L354 BasicCegarLoop]: trace histogram [229, 228, 1, 1, 1] [2018-07-25 08:45:53,259 INFO L415 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:53,259 INFO L82 PathProgramCache]: Analyzing trace with hash 172976751, now seen corresponding path program 228 times [2018-07-25 08:45:53,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 52212 backedges. 0 proven. 52212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:54,928 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:54,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230] total 230 [2018-07-25 08:45:54,929 INFO L451 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-07-25 08:45:54,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-07-25 08:45:54,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:45:54,934 INFO L87 Difference]: Start difference. First operand 461 states and 461 transitions. Second operand 231 states. [2018-07-25 08:45:58,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:58,306 INFO L93 Difference]: Finished difference Result 465 states and 465 transitions. [2018-07-25 08:45:58,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-25 08:45:58,306 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 460 [2018-07-25 08:45:58,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:58,307 INFO L225 Difference]: With dead ends: 465 [2018-07-25 08:45:58,307 INFO L226 Difference]: Without dead ends: 463 [2018-07-25 08:45:58,309 INFO L574 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 [2018-07-25 08:45:58,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-07-25 08:45:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2018-07-25 08:45:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-07-25 08:45:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2018-07-25 08:45:58,314 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 460 [2018-07-25 08:45:58,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:58,314 INFO L472 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2018-07-25 08:45:58,314 INFO L473 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-07-25 08:45:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2018-07-25 08:45:58,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-07-25 08:45:58,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:58,316 INFO L354 BasicCegarLoop]: trace histogram [230, 229, 1, 1, 1] [2018-07-25 08:45:58,316 INFO L415 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:58,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1273014743, now seen corresponding path program 229 times [2018-07-25 08:45:58,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 52670 backedges. 0 proven. 52670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:00,047 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:00,047 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-25 08:46:00,047 INFO L451 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-25 08:46:00,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-25 08:46:00,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:46:00,050 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand 232 states. Received shutdown request... [2018-07-25 08:46:00,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:46:00,850 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:46:00,856 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:46:00,856 INFO L202 PluginConnector]: Adding new model array2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:46:00 BoogieIcfgContainer [2018-07-25 08:46:00,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:46:00,857 INFO L168 Benchmark]: Toolchain (without parser) took 253411.51 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -947.1 MB). Peak memory consumption was 756.8 MB. Max. memory is 7.1 GB. [2018-07-25 08:46:00,858 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:46:00,859 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:46:00,859 INFO L168 Benchmark]: Boogie Preprocessor took 20.92 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:46:00,859 INFO L168 Benchmark]: RCFGBuilder took 238.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:46:00,860 INFO L168 Benchmark]: TraceAbstraction took 253104.76 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -957.7 MB). Peak memory consumption was 746.3 MB. Max. memory is 7.1 GB. [2018-07-25 08:46:00,862 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 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.20 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 20.92 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 238.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253104.76 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -957.7 MB). Peak memory consumption was 746.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 42). Cancelled while BasicCegarLoop was constructing difference of abstraction (463states) and interpolant automaton (currently 156 states, 232 states before enhancement), while ReachableStatesComputation was computing reachable states (307 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 253.0s OverallTime, 230 OverallIterations, 230 TraceHistogramMax, 122.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 918 SDtfs, 0 SDslu, 38143 SDs, 0 SdLazy, 38373 SolverSat, 490 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26795 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 26565 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=463occurred in iteration=229, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 229 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 17.3s SatisfiabilityAnalysisTime, 101.0s InterpolantComputationTime, 53590 NumberOfCodeBlocks, 53590 NumberOfCodeBlocksAsserted, 230 NumberOfCheckSat, 53360 ConstructedInterpolants, 0 QuantifiedInterpolants, 49198610 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 230 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4055590 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/array2.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-46-00-872.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array2.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-46-00-872.csv Completed graceful shutdown