java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/doubleLoopUniformIterations.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:34:29,640 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:34:29,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:34:29,661 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:34:29,661 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:34:29,662 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:34:29,664 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:34:29,668 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:34:29,670 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:34:29,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:34:29,672 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-23 15:34:29,698 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 15:34:29,715 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:34:29,715 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:34:29,717 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:34:29,718 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:34:29,718 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:34:29,718 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:34:29,718 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:34:29,718 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:34:29,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:34:29,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:34:29,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:34:29,803 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:34:29,804 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:34:29,804 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/doubleLoopUniformIterations.bpl [2018-07-23 15:34:29,805 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/doubleLoopUniformIterations.bpl' [2018-07-23 15:34:29,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:34:29,858 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:34:29,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:34:29,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:34:29,859 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:34:29,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:29" (1/1) ... [2018-07-23 15:34:29,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:29" (1/1) ... [2018-07-23 15:34:29,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:29" (1/1) ... [2018-07-23 15:34:29,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:29" (1/1) ... [2018-07-23 15:34:29,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:29" (1/1) ... [2018-07-23 15:34:29,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:29" (1/1) ... [2018-07-23 15:34:29,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:29" (1/1) ... [2018-07-23 15:34:29,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:34:29,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:34:29,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:34:29,921 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:34:29,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:29" (1/1) ... [2018-07-23 15:34:30,016 INFO L130 BoogieDeclarations]: Found specification of procedure Main [2018-07-23 15:34:30,016 INFO L138 BoogieDeclarations]: Found implementation of procedure Main [2018-07-23 15:34:30,181 INFO L258 CfgBuilder]: Using library mode [2018-07-23 15:34:30,183 INFO L202 PluginConnector]: Adding new model doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:34:30 BoogieIcfgContainer [2018-07-23 15:34:30,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:34:30,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:34:30,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:34:30,190 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:34:30,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:29" (1/2) ... [2018-07-23 15:34:30,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f9a03b and model type doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:34:30, skipping insertion in model container [2018-07-23 15:34:30,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:34:30" (2/2) ... [2018-07-23 15:34:30,196 INFO L112 eAbstractionObserver]: Analyzing ICFG doubleLoopUniformIterations.bpl [2018-07-23 15:34:30,207 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:34:30,218 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-07-23 15:34:30,269 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:34:30,270 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:34:30,270 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:34:30,270 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:34:30,271 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:34:30,271 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:34:30,271 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:34:30,271 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:34:30,272 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:34:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-23 15:34:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:34:30,295 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,296 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:34:30,297 INFO L414 AbstractCegarLoop]: === Iteration 1 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:30,303 INFO L82 PathProgramCache]: Analyzing trace with hash 926725, now seen corresponding path program 1 times [2018-07-23 15:34:30,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,375 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:34:30,376 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-23 15:34:30,381 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 15:34:30,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 15:34:30,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:34:30,397 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-07-23 15:34:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,442 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2018-07-23 15:34:30,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 15:34:30,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-23 15:34:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,455 INFO L225 Difference]: With dead ends: 15 [2018-07-23 15:34:30,455 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 15:34:30,459 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:34:30,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 15:34:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-23 15:34:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-23 15:34:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-07-23 15:34:30,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 4 [2018-07-23 15:34:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,503 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-07-23 15:34:30,503 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 15:34:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2018-07-23 15:34:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 15:34:30,504 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,504 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-23 15:34:30,505 INFO L414 AbstractCegarLoop]: === Iteration 2 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:30,505 INFO L82 PathProgramCache]: Analyzing trace with hash 28728519, now seen corresponding path program 1 times [2018-07-23 15:34:30,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,519 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:34:30,519 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-07-23 15:34:30,523 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 15:34:30,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 15:34:30,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:34:30,525 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 3 states. [2018-07-23 15:34:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,539 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-23 15:34:30,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 15:34:30,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-07-23 15:34:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,540 INFO L225 Difference]: With dead ends: 11 [2018-07-23 15:34:30,540 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 15:34:30,541 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:34:30,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 15:34:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 15:34:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 15:34:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-07-23 15:34:30,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-07-23 15:34:30,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,546 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-07-23 15:34:30,546 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 15:34:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-07-23 15:34:30,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:34:30,547 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,547 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-23 15:34:30,547 INFO L414 AbstractCegarLoop]: === Iteration 3 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:30,548 INFO L82 PathProgramCache]: Analyzing trace with hash 891297133, now seen corresponding path program 1 times [2018-07-23 15:34:30,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,571 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:34:30,571 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:34:30,572 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:34:30,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:34:30,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:34:30,573 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 4 states. [2018-07-23 15:34:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,595 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-23 15:34:30,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:34:30,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-23 15:34:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,596 INFO L225 Difference]: With dead ends: 11 [2018-07-23 15:34:30,597 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 15:34:30,597 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:34:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 15:34:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-23 15:34:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-23 15:34:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-07-23 15:34:30,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2018-07-23 15:34:30,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,602 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-07-23 15:34:30,602 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:34:30,602 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2018-07-23 15:34:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:34:30,602 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,603 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:34:30,603 INFO L414 AbstractCegarLoop]: === Iteration 4 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:30,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1860345825, now seen corresponding path program 1 times [2018-07-23 15:34:30,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,651 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2018-07-23 15:34:30,651 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:34:30,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:34:30,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:34:30,652 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2018-07-23 15:34:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,678 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2018-07-23 15:34:30,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:34:30,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-07-23 15:34:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,682 INFO L225 Difference]: With dead ends: 14 [2018-07-23 15:34:30,683 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 15:34:30,685 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:34:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 15:34:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-07-23 15:34:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-23 15:34:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-07-23 15:34:30,690 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2018-07-23 15:34:30,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,691 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-07-23 15:34:30,691 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:34:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-07-23 15:34:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:34:30,693 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,693 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-23 15:34:30,694 INFO L414 AbstractCegarLoop]: === Iteration 5 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:30,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1836084205, now seen corresponding path program 2 times [2018-07-23 15:34:30,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:34:30,751 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:34:30,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:34:30,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:30,752 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2018-07-23 15:34:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,773 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2018-07-23 15:34:30,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:34:30,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-23 15:34:30,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,774 INFO L225 Difference]: With dead ends: 15 [2018-07-23 15:34:30,774 INFO L226 Difference]: Without dead ends: 9 [2018-07-23 15:34:30,775 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:30,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-23 15:34:30,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-23 15:34:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 15:34:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-23 15:34:30,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 8 [2018-07-23 15:34:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,780 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-23 15:34:30,780 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:34:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-23 15:34:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:34:30,780 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,781 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-23 15:34:30,781 INFO L414 AbstractCegarLoop]: === Iteration 6 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:30,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1860095751, now seen corresponding path program 3 times [2018-07-23 15:34:30,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:34:30,804 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:34:30,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:34:30,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:30,805 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2018-07-23 15:34:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,829 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-07-23 15:34:30,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:34:30,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-23 15:34:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,830 INFO L225 Difference]: With dead ends: 13 [2018-07-23 15:34:30,830 INFO L226 Difference]: Without dead ends: 10 [2018-07-23 15:34:30,831 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-23 15:34:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-23 15:34:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-23 15:34:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-07-23 15:34:30,836 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2018-07-23 15:34:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,836 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-07-23 15:34:30,836 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:34:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2018-07-23 15:34:30,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-23 15:34:30,837 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,837 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2018-07-23 15:34:30,838 INFO L414 AbstractCegarLoop]: === Iteration 7 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:30,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1828331911, now seen corresponding path program 4 times [2018-07-23 15:34:30,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 15:34:30,888 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:34:30,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:34:30,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:30,889 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 5 states. [2018-07-23 15:34:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,916 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-07-23 15:34:30,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:34:30,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-07-23 15:34:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,917 INFO L225 Difference]: With dead ends: 17 [2018-07-23 15:34:30,917 INFO L226 Difference]: Without dead ends: 14 [2018-07-23 15:34:30,918 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-23 15:34:30,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2018-07-23 15:34:30,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-23 15:34:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-07-23 15:34:30,924 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2018-07-23 15:34:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,924 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-07-23 15:34:30,925 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:34:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-07-23 15:34:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:34:30,925 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,926 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2018-07-23 15:34:30,926 INFO L414 AbstractCegarLoop]: === Iteration 8 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:30,926 INFO L82 PathProgramCache]: Analyzing trace with hash 843652871, now seen corresponding path program 5 times [2018-07-23 15:34:30,926 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:34:30,962 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:34:30,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:34:30,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:34:30,963 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 6 states. [2018-07-23 15:34:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,003 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2018-07-23 15:34:31,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:34:31,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-23 15:34:31,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,007 INFO L225 Difference]: With dead ends: 18 [2018-07-23 15:34:31,007 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 15:34:31,008 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:34:31,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 15:34:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 15:34:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 15:34:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-23 15:34:31,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 10 [2018-07-23 15:34:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,019 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-23 15:34:31,019 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:34:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-23 15:34:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:34:31,020 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,020 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,020 INFO L414 AbstractCegarLoop]: === Iteration 9 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1588010797, now seen corresponding path program 6 times [2018-07-23 15:34:31,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,048 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:34:31,048 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:34:31,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:34:31,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:34:31,050 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-23 15:34:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,070 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-07-23 15:34:31,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:34:31,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-23 15:34:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,071 INFO L225 Difference]: With dead ends: 15 [2018-07-23 15:34:31,071 INFO L226 Difference]: Without dead ends: 12 [2018-07-23 15:34:31,074 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:34:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-23 15:34:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-23 15:34:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-23 15:34:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-07-23 15:34:31,083 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2018-07-23 15:34:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,087 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-07-23 15:34:31,087 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:34:31,088 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-07-23 15:34:31,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-23 15:34:31,090 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,090 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,091 INFO L414 AbstractCegarLoop]: === Iteration 10 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1983632929, now seen corresponding path program 7 times [2018-07-23 15:34:31,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,165 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:34:31,166 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:34:31,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:34:31,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:34:31,169 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 6 states. [2018-07-23 15:34:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,243 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-07-23 15:34:31,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:34:31,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-07-23 15:34:31,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,244 INFO L225 Difference]: With dead ends: 20 [2018-07-23 15:34:31,244 INFO L226 Difference]: Without dead ends: 17 [2018-07-23 15:34:31,245 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:34:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-23 15:34:31,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2018-07-23 15:34:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-23 15:34:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-07-23 15:34:31,258 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2018-07-23 15:34:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,261 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-07-23 15:34:31,261 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:34:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-07-23 15:34:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:34:31,262 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,262 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,263 INFO L414 AbstractCegarLoop]: === Iteration 11 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1363017133, now seen corresponding path program 8 times [2018-07-23 15:34:31,263 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:34:31,296 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:34:31,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:34:31,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:31,297 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 7 states. [2018-07-23 15:34:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,316 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-07-23 15:34:31,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:34:31,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-23 15:34:31,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,318 INFO L225 Difference]: With dead ends: 21 [2018-07-23 15:34:31,318 INFO L226 Difference]: Without dead ends: 13 [2018-07-23 15:34:31,319 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:31,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-23 15:34:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-23 15:34:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-23 15:34:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-23 15:34:31,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2018-07-23 15:34:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,324 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-23 15:34:31,324 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:34:31,325 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-23 15:34:31,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:34:31,325 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,326 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,326 INFO L414 AbstractCegarLoop]: === Iteration 12 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1331690937, now seen corresponding path program 9 times [2018-07-23 15:34:31,326 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:34:31,354 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:34:31,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:34:31,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:31,355 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-07-23 15:34:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,393 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-07-23 15:34:31,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:34:31,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-23 15:34:31,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,398 INFO L225 Difference]: With dead ends: 17 [2018-07-23 15:34:31,398 INFO L226 Difference]: Without dead ends: 14 [2018-07-23 15:34:31,400 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:31,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-23 15:34:31,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-23 15:34:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-23 15:34:31,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-07-23 15:34:31,410 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2018-07-23 15:34:31,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,410 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-07-23 15:34:31,415 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:34:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-07-23 15:34:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-23 15:34:31,416 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,416 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,417 INFO L414 AbstractCegarLoop]: === Iteration 13 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1667192391, now seen corresponding path program 10 times [2018-07-23 15:34:31,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,484 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,484 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:34:31,484 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:34:31,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:34:31,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:31,485 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2018-07-23 15:34:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,516 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-07-23 15:34:31,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:34:31,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-07-23 15:34:31,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,518 INFO L225 Difference]: With dead ends: 23 [2018-07-23 15:34:31,518 INFO L226 Difference]: Without dead ends: 20 [2018-07-23 15:34:31,519 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-23 15:34:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2018-07-23 15:34:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-23 15:34:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-07-23 15:34:31,525 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2018-07-23 15:34:31,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,526 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-07-23 15:34:31,526 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:34:31,526 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-07-23 15:34:31,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:34:31,527 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,527 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,527 INFO L414 AbstractCegarLoop]: === Iteration 14 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,527 INFO L82 PathProgramCache]: Analyzing trace with hash 143295047, now seen corresponding path program 11 times [2018-07-23 15:34:31,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:34:31,551 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:34:31,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:34:31,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:34:31,552 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2018-07-23 15:34:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,571 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-07-23 15:34:31,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 15:34:31,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-23 15:34:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,573 INFO L225 Difference]: With dead ends: 24 [2018-07-23 15:34:31,573 INFO L226 Difference]: Without dead ends: 15 [2018-07-23 15:34:31,574 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:34:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-23 15:34:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-23 15:34:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-23 15:34:31,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-23 15:34:31,579 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 14 [2018-07-23 15:34:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,579 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-23 15:34:31,580 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:34:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-23 15:34:31,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:34:31,580 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,581 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,581 INFO L414 AbstractCegarLoop]: === Iteration 15 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1788276499, now seen corresponding path program 12 times [2018-07-23 15:34:31,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:34:31,606 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:34:31,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:34:31,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:34:31,607 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-07-23 15:34:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,623 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-07-23 15:34:31,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 15:34:31,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-23 15:34:31,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,624 INFO L225 Difference]: With dead ends: 19 [2018-07-23 15:34:31,624 INFO L226 Difference]: Without dead ends: 16 [2018-07-23 15:34:31,625 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:34:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-23 15:34:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-23 15:34:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-23 15:34:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-07-23 15:34:31,631 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2018-07-23 15:34:31,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,631 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-07-23 15:34:31,631 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:34:31,631 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-07-23 15:34:31,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-23 15:34:31,632 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,632 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,633 INFO L414 AbstractCegarLoop]: === Iteration 16 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,633 INFO L82 PathProgramCache]: Analyzing trace with hash 397941857, now seen corresponding path program 13 times [2018-07-23 15:34:31,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:34:31,684 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:34:31,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:34:31,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:34:31,685 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 8 states. [2018-07-23 15:34:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,730 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-07-23 15:34:31,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 15:34:31,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-07-23 15:34:31,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,732 INFO L225 Difference]: With dead ends: 26 [2018-07-23 15:34:31,732 INFO L226 Difference]: Without dead ends: 23 [2018-07-23 15:34:31,733 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:34:31,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-23 15:34:31,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2018-07-23 15:34:31,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-23 15:34:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-07-23 15:34:31,740 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2018-07-23 15:34:31,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,741 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-07-23 15:34:31,741 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:34:31,741 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-07-23 15:34:31,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:34:31,742 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,742 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,742 INFO L414 AbstractCegarLoop]: === Iteration 17 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,743 INFO L82 PathProgramCache]: Analyzing trace with hash -548765843, now seen corresponding path program 14 times [2018-07-23 15:34:31,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,769 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,769 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:34:31,769 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:34:31,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:34:31,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:34:31,770 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 9 states. [2018-07-23 15:34:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,796 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-07-23 15:34:31,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:34:31,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:34:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,797 INFO L225 Difference]: With dead ends: 27 [2018-07-23 15:34:31,797 INFO L226 Difference]: Without dead ends: 17 [2018-07-23 15:34:31,798 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:34:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-23 15:34:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-23 15:34:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-23 15:34:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-23 15:34:31,816 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 16 [2018-07-23 15:34:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,817 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-23 15:34:31,817 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:34:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-23 15:34:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:34:31,818 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,823 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,824 INFO L414 AbstractCegarLoop]: === Iteration 18 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,824 INFO L82 PathProgramCache]: Analyzing trace with hash -297941625, now seen corresponding path program 15 times [2018-07-23 15:34:31,824 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,858 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:34:31,859 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:34:31,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:34:31,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:34:31,860 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2018-07-23 15:34:31,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,877 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-07-23 15:34:31,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:34:31,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:34:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,878 INFO L225 Difference]: With dead ends: 21 [2018-07-23 15:34:31,878 INFO L226 Difference]: Without dead ends: 18 [2018-07-23 15:34:31,879 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:34:31,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-23 15:34:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-23 15:34:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-23 15:34:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-07-23 15:34:31,885 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2018-07-23 15:34:31,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,885 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-07-23 15:34:31,886 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:34:31,886 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-07-23 15:34:31,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-23 15:34:31,886 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,886 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,887 INFO L414 AbstractCegarLoop]: === Iteration 19 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,887 INFO L82 PathProgramCache]: Analyzing trace with hash -646317305, now seen corresponding path program 16 times [2018-07-23 15:34:31,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,927 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:34:31,928 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:34:31,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:34:31,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:34:31,929 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 9 states. [2018-07-23 15:34:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,968 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-07-23 15:34:31,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:34:31,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-07-23 15:34:31,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,969 INFO L225 Difference]: With dead ends: 29 [2018-07-23 15:34:31,969 INFO L226 Difference]: Without dead ends: 26 [2018-07-23 15:34:31,970 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:34:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-23 15:34:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2018-07-23 15:34:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-23 15:34:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-07-23 15:34:31,977 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-07-23 15:34:31,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,977 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-07-23 15:34:31,978 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:34:31,978 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-07-23 15:34:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:34:31,978 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,979 INFO L353 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1] [2018-07-23 15:34:31,979 INFO L414 AbstractCegarLoop]: === Iteration 20 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1438938503, now seen corresponding path program 17 times [2018-07-23 15:34:31,979 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:34:32,009 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:34:32,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:34:32,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:34:32,010 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2018-07-23 15:34:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,032 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-07-23 15:34:32,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:34:32,033 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-23 15:34:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,033 INFO L225 Difference]: With dead ends: 30 [2018-07-23 15:34:32,034 INFO L226 Difference]: Without dead ends: 19 [2018-07-23 15:34:32,034 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:34:32,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-23 15:34:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-23 15:34:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-23 15:34:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-23 15:34:32,041 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 18 [2018-07-23 15:34:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,041 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-23 15:34:32,041 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:34:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-23 15:34:32,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:34:32,042 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,042 INFO L353 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1] [2018-07-23 15:34:32,042 INFO L414 AbstractCegarLoop]: === Iteration 21 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:32,043 INFO L82 PathProgramCache]: Analyzing trace with hash 624554669, now seen corresponding path program 18 times [2018-07-23 15:34:32,043 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:34:32,070 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:34:32,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:34:32,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:34:32,071 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2018-07-23 15:34:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,087 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-07-23 15:34:32,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:34:32,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-23 15:34:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,088 INFO L225 Difference]: With dead ends: 23 [2018-07-23 15:34:32,088 INFO L226 Difference]: Without dead ends: 20 [2018-07-23 15:34:32,089 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:34:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-23 15:34:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-23 15:34:32,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-23 15:34:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-07-23 15:34:32,096 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2018-07-23 15:34:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,096 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-07-23 15:34:32,096 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:34:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-07-23 15:34:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-23 15:34:32,097 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,097 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1] [2018-07-23 15:34:32,097 INFO L414 AbstractCegarLoop]: === Iteration 22 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:32,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2113703263, now seen corresponding path program 19 times [2018-07-23 15:34:32,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:34:32,159 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:34:32,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:34:32,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:34:32,162 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2018-07-23 15:34:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,207 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-07-23 15:34:32,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:34:32,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-07-23 15:34:32,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,208 INFO L225 Difference]: With dead ends: 32 [2018-07-23 15:34:32,208 INFO L226 Difference]: Without dead ends: 29 [2018-07-23 15:34:32,211 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:34:32,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-23 15:34:32,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2018-07-23 15:34:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-23 15:34:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-07-23 15:34:32,220 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2018-07-23 15:34:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,221 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-07-23 15:34:32,221 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:34:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-07-23 15:34:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:34:32,222 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,222 INFO L353 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1] [2018-07-23 15:34:32,222 INFO L414 AbstractCegarLoop]: === Iteration 23 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:32,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1100353235, now seen corresponding path program 20 times [2018-07-23 15:34:32,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,267 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,268 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:34:32,268 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:34:32,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:34:32,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:34:32,269 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 11 states. [2018-07-23 15:34:32,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,299 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-07-23 15:34:32,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:34:32,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-23 15:34:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,300 INFO L225 Difference]: With dead ends: 33 [2018-07-23 15:34:32,300 INFO L226 Difference]: Without dead ends: 21 [2018-07-23 15:34:32,304 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:34:32,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-23 15:34:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-23 15:34:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-23 15:34:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-23 15:34:32,313 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 20 [2018-07-23 15:34:32,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,313 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-23 15:34:32,314 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:34:32,314 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-23 15:34:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:34:32,315 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,316 INFO L353 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1] [2018-07-23 15:34:32,316 INFO L414 AbstractCegarLoop]: === Iteration 24 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:32,316 INFO L82 PathProgramCache]: Analyzing trace with hash -576448313, now seen corresponding path program 21 times [2018-07-23 15:34:32,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,361 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:34:32,362 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:34:32,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:34:32,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:34:32,366 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2018-07-23 15:34:32,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,389 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-07-23 15:34:32,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:34:32,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-23 15:34:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,390 INFO L225 Difference]: With dead ends: 25 [2018-07-23 15:34:32,390 INFO L226 Difference]: Without dead ends: 22 [2018-07-23 15:34:32,391 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:34:32,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-23 15:34:32,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-23 15:34:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-23 15:34:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-07-23 15:34:32,401 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2018-07-23 15:34:32,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,403 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-07-23 15:34:32,403 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:34:32,403 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-07-23 15:34:32,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 15:34:32,404 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,404 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2018-07-23 15:34:32,407 INFO L414 AbstractCegarLoop]: === Iteration 25 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:32,407 INFO L82 PathProgramCache]: Analyzing trace with hash -690090041, now seen corresponding path program 22 times [2018-07-23 15:34:32,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:34:32,464 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:34:32,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:34:32,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:34:32,465 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 11 states. [2018-07-23 15:34:32,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,533 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-07-23 15:34:32,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:34:32,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2018-07-23 15:34:32,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,534 INFO L225 Difference]: With dead ends: 35 [2018-07-23 15:34:32,534 INFO L226 Difference]: Without dead ends: 32 [2018-07-23 15:34:32,535 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:34:32,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-23 15:34:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2018-07-23 15:34:32,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-23 15:34:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-07-23 15:34:32,546 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2018-07-23 15:34:32,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,549 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-07-23 15:34:32,549 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:34:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-07-23 15:34:32,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:34:32,550 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,550 INFO L353 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1] [2018-07-23 15:34:32,551 INFO L414 AbstractCegarLoop]: === Iteration 26 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:32,551 INFO L82 PathProgramCache]: Analyzing trace with hash 81983687, now seen corresponding path program 23 times [2018-07-23 15:34:32,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:34:32,598 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:34:32,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:34:32,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:34:32,599 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 12 states. [2018-07-23 15:34:32,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,634 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-07-23 15:34:32,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:34:32,634 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-23 15:34:32,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,635 INFO L225 Difference]: With dead ends: 36 [2018-07-23 15:34:32,635 INFO L226 Difference]: Without dead ends: 23 [2018-07-23 15:34:32,636 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:34:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-23 15:34:32,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-23 15:34:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-23 15:34:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-23 15:34:32,654 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 22 [2018-07-23 15:34:32,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,654 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-23 15:34:32,660 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:34:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-23 15:34:32,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:34:32,662 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,662 INFO L353 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1] [2018-07-23 15:34:32,662 INFO L414 AbstractCegarLoop]: === Iteration 27 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:32,662 INFO L82 PathProgramCache]: Analyzing trace with hash -856832915, now seen corresponding path program 24 times [2018-07-23 15:34:32,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,705 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:34:32,705 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:34:32,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:34:32,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:34:32,706 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-07-23 15:34:32,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,727 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-07-23 15:34:32,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:34:32,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-23 15:34:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,728 INFO L225 Difference]: With dead ends: 27 [2018-07-23 15:34:32,728 INFO L226 Difference]: Without dead ends: 24 [2018-07-23 15:34:32,729 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:34:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-23 15:34:32,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-23 15:34:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-23 15:34:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-07-23 15:34:32,737 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2018-07-23 15:34:32,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,738 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-07-23 15:34:32,738 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:34:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-07-23 15:34:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-23 15:34:32,738 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,739 INFO L353 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1] [2018-07-23 15:34:32,739 INFO L414 AbstractCegarLoop]: === Iteration 28 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:32,739 INFO L82 PathProgramCache]: Analyzing trace with hash -792078111, now seen corresponding path program 25 times [2018-07-23 15:34:32,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,798 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,798 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:34:32,798 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:34:32,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:34:32,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:34:32,799 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 12 states. [2018-07-23 15:34:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,866 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-07-23 15:34:32,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:34:32,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2018-07-23 15:34:32,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,867 INFO L225 Difference]: With dead ends: 38 [2018-07-23 15:34:32,868 INFO L226 Difference]: Without dead ends: 35 [2018-07-23 15:34:32,868 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:34:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-23 15:34:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2018-07-23 15:34:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-23 15:34:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-07-23 15:34:32,880 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 23 [2018-07-23 15:34:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,881 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-07-23 15:34:32,881 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:34:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-07-23 15:34:32,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:34:32,882 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,882 INFO L353 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1] [2018-07-23 15:34:32,882 INFO L414 AbstractCegarLoop]: === Iteration 29 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:32,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1215320813, now seen corresponding path program 26 times [2018-07-23 15:34:32,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,927 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:34:32,927 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:34:32,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:34:32,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:34:32,928 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 13 states. [2018-07-23 15:34:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,961 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-07-23 15:34:32,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:34:32,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-23 15:34:32,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,962 INFO L225 Difference]: With dead ends: 39 [2018-07-23 15:34:32,962 INFO L226 Difference]: Without dead ends: 25 [2018-07-23 15:34:32,963 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:34:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-23 15:34:32,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-23 15:34:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-23 15:34:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-23 15:34:32,978 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 24 [2018-07-23 15:34:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,978 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-23 15:34:32,978 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:34:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-23 15:34:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:34:32,979 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,979 INFO L353 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1] [2018-07-23 15:34:32,979 INFO L414 AbstractCegarLoop]: === Iteration 30 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:32,980 INFO L82 PathProgramCache]: Analyzing trace with hash -2118190073, now seen corresponding path program 27 times [2018-07-23 15:34:32,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:34:33,032 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:34:33,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:34:33,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:34:33,033 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 13 states. [2018-07-23 15:34:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,056 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-07-23 15:34:33,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:34:33,057 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-23 15:34:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,057 INFO L225 Difference]: With dead ends: 29 [2018-07-23 15:34:33,057 INFO L226 Difference]: Without dead ends: 26 [2018-07-23 15:34:33,058 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:34:33,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-23 15:34:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-23 15:34:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-23 15:34:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-07-23 15:34:33,068 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 24 [2018-07-23 15:34:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,068 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-07-23 15:34:33,069 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:34:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-07-23 15:34:33,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:34:33,071 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,071 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2018-07-23 15:34:33,071 INFO L414 AbstractCegarLoop]: === Iteration 31 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:33,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1239444345, now seen corresponding path program 28 times [2018-07-23 15:34:33,072 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,144 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:34:33,145 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:34:33,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:34:33,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:34:33,146 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 13 states. [2018-07-23 15:34:33,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,223 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-07-23 15:34:33,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:34:33,224 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-07-23 15:34:33,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,224 INFO L225 Difference]: With dead ends: 41 [2018-07-23 15:34:33,224 INFO L226 Difference]: Without dead ends: 38 [2018-07-23 15:34:33,225 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:34:33,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-23 15:34:33,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2018-07-23 15:34:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-23 15:34:33,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-07-23 15:34:33,242 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 25 [2018-07-23 15:34:33,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,242 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-07-23 15:34:33,242 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:34:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-07-23 15:34:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:34:33,243 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,243 INFO L353 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1] [2018-07-23 15:34:33,243 INFO L414 AbstractCegarLoop]: === Iteration 32 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:33,244 INFO L82 PathProgramCache]: Analyzing trace with hash 231869447, now seen corresponding path program 29 times [2018-07-23 15:34:33,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-23 15:34:33,286 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-23 15:34:33,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-23 15:34:33,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:34:33,287 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 14 states. [2018-07-23 15:34:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,321 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-07-23 15:34:33,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:34:33,322 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-23 15:34:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,322 INFO L225 Difference]: With dead ends: 42 [2018-07-23 15:34:33,322 INFO L226 Difference]: Without dead ends: 27 [2018-07-23 15:34:33,323 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:34:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-23 15:34:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-23 15:34:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-23 15:34:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-23 15:34:33,336 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 26 [2018-07-23 15:34:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,336 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-23 15:34:33,336 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-23 15:34:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-23 15:34:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:34:33,337 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,340 INFO L353 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1] [2018-07-23 15:34:33,341 INFO L414 AbstractCegarLoop]: === Iteration 33 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:33,341 INFO L82 PathProgramCache]: Analyzing trace with hash -27752915, now seen corresponding path program 30 times [2018-07-23 15:34:33,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,396 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-23 15:34:33,397 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-23 15:34:33,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-23 15:34:33,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:34:33,398 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2018-07-23 15:34:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,427 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-07-23 15:34:33,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:34:33,427 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-23 15:34:33,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,428 INFO L225 Difference]: With dead ends: 31 [2018-07-23 15:34:33,428 INFO L226 Difference]: Without dead ends: 28 [2018-07-23 15:34:33,429 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:34:33,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-23 15:34:33,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-23 15:34:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-23 15:34:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-07-23 15:34:33,439 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2018-07-23 15:34:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,440 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-07-23 15:34:33,440 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-23 15:34:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-07-23 15:34:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-23 15:34:33,440 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,441 INFO L353 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1] [2018-07-23 15:34:33,441 INFO L414 AbstractCegarLoop]: === Iteration 34 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:33,441 INFO L82 PathProgramCache]: Analyzing trace with hash -860401887, now seen corresponding path program 31 times [2018-07-23 15:34:33,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,506 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:34:33,507 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-23 15:34:33,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-23 15:34:33,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:34:33,507 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 14 states. [2018-07-23 15:34:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,594 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-07-23 15:34:33,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:34:33,594 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2018-07-23 15:34:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,595 INFO L225 Difference]: With dead ends: 44 [2018-07-23 15:34:33,595 INFO L226 Difference]: Without dead ends: 41 [2018-07-23 15:34:33,596 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:34:33,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-23 15:34:33,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2018-07-23 15:34:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-23 15:34:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-07-23 15:34:33,608 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 27 [2018-07-23 15:34:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,609 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-07-23 15:34:33,609 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-23 15:34:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-07-23 15:34:33,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 15:34:33,610 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,610 INFO L353 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1] [2018-07-23 15:34:33,610 INFO L414 AbstractCegarLoop]: === Iteration 35 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:33,610 INFO L82 PathProgramCache]: Analyzing trace with hash -902716243, now seen corresponding path program 32 times [2018-07-23 15:34:33,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,652 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,653 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-23 15:34:33,653 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-23 15:34:33,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-23 15:34:33,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:34:33,654 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 15 states. [2018-07-23 15:34:33,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,692 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-07-23 15:34:33,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:34:33,692 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-23 15:34:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,693 INFO L225 Difference]: With dead ends: 45 [2018-07-23 15:34:33,693 INFO L226 Difference]: Without dead ends: 29 [2018-07-23 15:34:33,694 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:34:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-23 15:34:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-23 15:34:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-23 15:34:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-23 15:34:33,705 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 28 [2018-07-23 15:34:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,706 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-23 15:34:33,706 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-23 15:34:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-23 15:34:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 15:34:33,706 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,706 INFO L353 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1] [2018-07-23 15:34:33,707 INFO L414 AbstractCegarLoop]: === Iteration 36 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:33,707 INFO L82 PathProgramCache]: Analyzing trace with hash -361074873, now seen corresponding path program 33 times [2018-07-23 15:34:33,707 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-23 15:34:33,751 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-23 15:34:33,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-23 15:34:33,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:34:33,752 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 15 states. [2018-07-23 15:34:33,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,777 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-07-23 15:34:33,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:34:33,777 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-23 15:34:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,778 INFO L225 Difference]: With dead ends: 33 [2018-07-23 15:34:33,778 INFO L226 Difference]: Without dead ends: 30 [2018-07-23 15:34:33,778 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:34:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-23 15:34:33,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-23 15:34:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-23 15:34:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-07-23 15:34:33,790 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 28 [2018-07-23 15:34:33,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,790 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-07-23 15:34:33,791 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-23 15:34:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-07-23 15:34:33,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:34:33,791 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,791 INFO L353 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1] [2018-07-23 15:34:33,791 INFO L414 AbstractCegarLoop]: === Iteration 37 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:33,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1691519303, now seen corresponding path program 34 times [2018-07-23 15:34:33,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,865 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-23 15:34:33,865 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-23 15:34:33,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-23 15:34:33,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:34:33,866 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 15 states. [2018-07-23 15:34:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,956 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2018-07-23 15:34:33,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:34:33,956 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2018-07-23 15:34:33,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,957 INFO L225 Difference]: With dead ends: 47 [2018-07-23 15:34:33,957 INFO L226 Difference]: Without dead ends: 44 [2018-07-23 15:34:33,957 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:34:33,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-23 15:34:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2018-07-23 15:34:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-23 15:34:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-07-23 15:34:33,970 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 29 [2018-07-23 15:34:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,971 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-07-23 15:34:33,971 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-23 15:34:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-07-23 15:34:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-23 15:34:33,971 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,972 INFO L353 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1] [2018-07-23 15:34:33,972 INFO L414 AbstractCegarLoop]: === Iteration 38 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:33,972 INFO L82 PathProgramCache]: Analyzing trace with hash 897429319, now seen corresponding path program 35 times [2018-07-23 15:34:33,972 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,015 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,015 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-23 15:34:34,015 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-23 15:34:34,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-23 15:34:34,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:34:34,016 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 16 states. [2018-07-23 15:34:34,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,056 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2018-07-23 15:34:34,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:34:34,056 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-23 15:34:34,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,056 INFO L225 Difference]: With dead ends: 48 [2018-07-23 15:34:34,057 INFO L226 Difference]: Without dead ends: 31 [2018-07-23 15:34:34,057 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:34:34,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-23 15:34:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-23 15:34:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-23 15:34:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-23 15:34:34,072 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 30 [2018-07-23 15:34:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,072 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-23 15:34:34,072 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-23 15:34:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-23 15:34:34,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-23 15:34:34,073 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,073 INFO L353 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1] [2018-07-23 15:34:34,073 INFO L414 AbstractCegarLoop]: === Iteration 39 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:34,073 INFO L82 PathProgramCache]: Analyzing trace with hash 508442605, now seen corresponding path program 36 times [2018-07-23 15:34:34,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,124 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-23 15:34:34,125 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-23 15:34:34,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-23 15:34:34,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:34:34,126 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 16 states. [2018-07-23 15:34:34,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,151 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-07-23 15:34:34,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:34:34,151 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-23 15:34:34,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,152 INFO L225 Difference]: With dead ends: 35 [2018-07-23 15:34:34,152 INFO L226 Difference]: Without dead ends: 32 [2018-07-23 15:34:34,152 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:34:34,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-23 15:34:34,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-23 15:34:34,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-23 15:34:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-07-23 15:34:34,164 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2018-07-23 15:34:34,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,165 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-07-23 15:34:34,165 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-23 15:34:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-07-23 15:34:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-23 15:34:34,165 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,166 INFO L353 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1] [2018-07-23 15:34:34,166 INFO L414 AbstractCegarLoop]: === Iteration 40 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:34,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1418209951, now seen corresponding path program 37 times [2018-07-23 15:34:34,167 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-23 15:34:34,289 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-23 15:34:34,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-23 15:34:34,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:34:34,290 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 16 states. [2018-07-23 15:34:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,419 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-07-23 15:34:34,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:34:34,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2018-07-23 15:34:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,420 INFO L225 Difference]: With dead ends: 50 [2018-07-23 15:34:34,420 INFO L226 Difference]: Without dead ends: 47 [2018-07-23 15:34:34,421 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:34:34,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-23 15:34:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2018-07-23 15:34:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-23 15:34:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-07-23 15:34:34,435 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 31 [2018-07-23 15:34:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,435 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-07-23 15:34:34,435 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-23 15:34:34,435 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-07-23 15:34:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-23 15:34:34,436 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,436 INFO L353 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1] [2018-07-23 15:34:34,436 INFO L414 AbstractCegarLoop]: === Iteration 41 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:34,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1014897043, now seen corresponding path program 38 times [2018-07-23 15:34:34,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,487 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-23 15:34:34,488 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:34:34,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:34:34,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:34:34,489 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 17 states. [2018-07-23 15:34:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,534 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-07-23 15:34:34,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:34:34,534 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-23 15:34:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,534 INFO L225 Difference]: With dead ends: 51 [2018-07-23 15:34:34,535 INFO L226 Difference]: Without dead ends: 33 [2018-07-23 15:34:34,535 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:34:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-23 15:34:34,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-23 15:34:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-23 15:34:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-23 15:34:34,547 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2018-07-23 15:34:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,547 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-23 15:34:34,547 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:34:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-23 15:34:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-23 15:34:34,548 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,548 INFO L353 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1] [2018-07-23 15:34:34,548 INFO L414 AbstractCegarLoop]: === Iteration 42 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:34,548 INFO L82 PathProgramCache]: Analyzing trace with hash -188583289, now seen corresponding path program 39 times [2018-07-23 15:34:34,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-23 15:34:34,594 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:34:34,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:34:34,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:34:34,595 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 17 states. [2018-07-23 15:34:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,620 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-07-23 15:34:34,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:34:34,621 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-23 15:34:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,621 INFO L225 Difference]: With dead ends: 37 [2018-07-23 15:34:34,621 INFO L226 Difference]: Without dead ends: 34 [2018-07-23 15:34:34,622 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:34:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-23 15:34:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-23 15:34:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-23 15:34:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-07-23 15:34:34,634 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 32 [2018-07-23 15:34:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,635 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-07-23 15:34:34,635 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:34:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-07-23 15:34:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-23 15:34:34,635 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,635 INFO L353 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1] [2018-07-23 15:34:34,636 INFO L414 AbstractCegarLoop]: === Iteration 43 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:34,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1551176185, now seen corresponding path program 40 times [2018-07-23 15:34:34,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,709 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-23 15:34:34,709 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:34:34,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:34:34,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:34:34,710 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 17 states. [2018-07-23 15:34:34,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,813 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-07-23 15:34:34,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:34:34,813 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 33 [2018-07-23 15:34:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,814 INFO L225 Difference]: With dead ends: 53 [2018-07-23 15:34:34,814 INFO L226 Difference]: Without dead ends: 50 [2018-07-23 15:34:34,814 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:34:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-23 15:34:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2018-07-23 15:34:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-23 15:34:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-07-23 15:34:34,830 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 33 [2018-07-23 15:34:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,830 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-07-23 15:34:34,830 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:34:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-07-23 15:34:34,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-23 15:34:34,830 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,831 INFO L353 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1] [2018-07-23 15:34:34,831 INFO L414 AbstractCegarLoop]: === Iteration 44 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:34,831 INFO L82 PathProgramCache]: Analyzing trace with hash -841883001, now seen corresponding path program 41 times [2018-07-23 15:34:34,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-23 15:34:34,875 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-23 15:34:34,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-23 15:34:34,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:34:34,876 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 18 states. [2018-07-23 15:34:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,926 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2018-07-23 15:34:34,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:34:34,926 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-23 15:34:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,927 INFO L225 Difference]: With dead ends: 54 [2018-07-23 15:34:34,927 INFO L226 Difference]: Without dead ends: 35 [2018-07-23 15:34:34,927 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:34:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-23 15:34:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-23 15:34:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-23 15:34:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-23 15:34:34,940 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 34 [2018-07-23 15:34:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,941 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-23 15:34:34,941 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-23 15:34:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-23 15:34:34,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-23 15:34:34,941 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,941 INFO L353 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1] [2018-07-23 15:34:34,942 INFO L414 AbstractCegarLoop]: === Iteration 45 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:34,942 INFO L82 PathProgramCache]: Analyzing trace with hash -995960403, now seen corresponding path program 42 times [2018-07-23 15:34:34,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,999 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,999 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-23 15:34:34,999 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-23 15:34:35,000 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-23 15:34:35,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:34:35,000 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 18 states. [2018-07-23 15:34:35,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,031 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-07-23 15:34:35,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:34:35,032 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-23 15:34:35,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,032 INFO L225 Difference]: With dead ends: 39 [2018-07-23 15:34:35,032 INFO L226 Difference]: Without dead ends: 36 [2018-07-23 15:34:35,033 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:34:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-23 15:34:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-23 15:34:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-23 15:34:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-07-23 15:34:35,047 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 34 [2018-07-23 15:34:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,047 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-07-23 15:34:35,047 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-23 15:34:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-07-23 15:34:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-23 15:34:35,048 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,048 INFO L353 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1] [2018-07-23 15:34:35,048 INFO L414 AbstractCegarLoop]: === Iteration 46 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash -810062943, now seen corresponding path program 43 times [2018-07-23 15:34:35,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:35,128 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:35,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-23 15:34:35,129 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-23 15:34:35,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-23 15:34:35,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:34:35,130 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 18 states. [2018-07-23 15:34:35,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,245 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-07-23 15:34:35,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:34:35,245 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 35 [2018-07-23 15:34:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,246 INFO L225 Difference]: With dead ends: 56 [2018-07-23 15:34:35,246 INFO L226 Difference]: Without dead ends: 53 [2018-07-23 15:34:35,246 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:34:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-23 15:34:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2018-07-23 15:34:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-23 15:34:35,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-07-23 15:34:35,262 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 35 [2018-07-23 15:34:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,262 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-07-23 15:34:35,262 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-23 15:34:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-07-23 15:34:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-23 15:34:35,263 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,263 INFO L353 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1] [2018-07-23 15:34:35,263 INFO L414 AbstractCegarLoop]: === Iteration 47 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:35,264 INFO L82 PathProgramCache]: Analyzing trace with hash 657791021, now seen corresponding path program 44 times [2018-07-23 15:34:35,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:35,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:35,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-23 15:34:35,315 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 15:34:35,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 15:34:35,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:34:35,316 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 19 states. [2018-07-23 15:34:35,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,370 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-07-23 15:34:35,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:34:35,371 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-23 15:34:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,371 INFO L225 Difference]: With dead ends: 57 [2018-07-23 15:34:35,371 INFO L226 Difference]: Without dead ends: 37 [2018-07-23 15:34:35,372 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:34:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-23 15:34:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-23 15:34:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-23 15:34:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-23 15:34:35,387 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 36 [2018-07-23 15:34:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,387 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-23 15:34:35,387 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 15:34:35,387 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-23 15:34:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-23 15:34:35,388 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,388 INFO L353 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1] [2018-07-23 15:34:35,388 INFO L414 AbstractCegarLoop]: === Iteration 48 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:35,388 INFO L82 PathProgramCache]: Analyzing trace with hash 176358855, now seen corresponding path program 45 times [2018-07-23 15:34:35,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:35,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:35,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-23 15:34:35,443 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 15:34:35,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 15:34:35,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:34:35,444 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 19 states. [2018-07-23 15:34:35,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,476 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-07-23 15:34:35,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:34:35,477 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-23 15:34:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,477 INFO L225 Difference]: With dead ends: 41 [2018-07-23 15:34:35,477 INFO L226 Difference]: Without dead ends: 38 [2018-07-23 15:34:35,478 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:34:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-23 15:34:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-23 15:34:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-23 15:34:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2018-07-23 15:34:35,495 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 36 [2018-07-23 15:34:35,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,495 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2018-07-23 15:34:35,495 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 15:34:35,495 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2018-07-23 15:34:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-23 15:34:35,495 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,496 INFO L353 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1] [2018-07-23 15:34:35,496 INFO L414 AbstractCegarLoop]: === Iteration 49 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:35,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1172095687, now seen corresponding path program 46 times [2018-07-23 15:34:35,496 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:35,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:35,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-23 15:34:35,579 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 15:34:35,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 15:34:35,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:34:35,580 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 19 states. [2018-07-23 15:34:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,703 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-07-23 15:34:35,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:34:35,704 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 37 [2018-07-23 15:34:35,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,704 INFO L225 Difference]: With dead ends: 59 [2018-07-23 15:34:35,704 INFO L226 Difference]: Without dead ends: 56 [2018-07-23 15:34:35,705 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:34:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-23 15:34:35,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40. [2018-07-23 15:34:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-23 15:34:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-07-23 15:34:35,722 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 37 [2018-07-23 15:34:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,723 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-07-23 15:34:35,723 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 15:34:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-07-23 15:34:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-23 15:34:35,723 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,723 INFO L353 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1] [2018-07-23 15:34:35,724 INFO L414 AbstractCegarLoop]: === Iteration 50 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:35,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1975166407, now seen corresponding path program 47 times [2018-07-23 15:34:35,724 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:35,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:35,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-23 15:34:35,774 INFO L450 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-23 15:34:35,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-23 15:34:35,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:34:35,775 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 20 states. [2018-07-23 15:34:35,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,828 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-07-23 15:34:35,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:34:35,828 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-23 15:34:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,829 INFO L225 Difference]: With dead ends: 60 [2018-07-23 15:34:35,829 INFO L226 Difference]: Without dead ends: 39 [2018-07-23 15:34:35,829 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:34:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-23 15:34:35,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-23 15:34:35,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-23 15:34:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-23 15:34:35,843 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 38 [2018-07-23 15:34:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,844 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-23 15:34:35,844 INFO L472 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-23 15:34:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-23 15:34:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-23 15:34:35,844 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,844 INFO L353 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1] [2018-07-23 15:34:35,845 INFO L414 AbstractCegarLoop]: === Iteration 51 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:35,845 INFO L82 PathProgramCache]: Analyzing trace with hash -64328851, now seen corresponding path program 48 times [2018-07-23 15:34:35,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:35,899 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:35,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-23 15:34:35,899 INFO L450 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-23 15:34:35,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-23 15:34:35,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:34:35,900 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 20 states. [2018-07-23 15:34:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,929 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2018-07-23 15:34:35,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:34:35,929 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-23 15:34:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,930 INFO L225 Difference]: With dead ends: 43 [2018-07-23 15:34:35,930 INFO L226 Difference]: Without dead ends: 40 [2018-07-23 15:34:35,930 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:34:35,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-23 15:34:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-23 15:34:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-23 15:34:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2018-07-23 15:34:35,946 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2018-07-23 15:34:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,946 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2018-07-23 15:34:35,946 INFO L472 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-23 15:34:35,946 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2018-07-23 15:34:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-23 15:34:35,947 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,947 INFO L353 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1] [2018-07-23 15:34:35,947 INFO L414 AbstractCegarLoop]: === Iteration 52 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:35,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1994255903, now seen corresponding path program 49 times [2018-07-23 15:34:35,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:36,030 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-23 15:34:36,030 INFO L450 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-23 15:34:36,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-23 15:34:36,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:34:36,031 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 20 states. [2018-07-23 15:34:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,163 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-07-23 15:34:36,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:34:36,163 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 39 [2018-07-23 15:34:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,164 INFO L225 Difference]: With dead ends: 62 [2018-07-23 15:34:36,164 INFO L226 Difference]: Without dead ends: 59 [2018-07-23 15:34:36,164 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:34:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-23 15:34:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2018-07-23 15:34:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-23 15:34:36,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-07-23 15:34:36,182 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 39 [2018-07-23 15:34:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,182 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-07-23 15:34:36,182 INFO L472 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-23 15:34:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-07-23 15:34:36,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-23 15:34:36,183 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,183 INFO L353 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1] [2018-07-23 15:34:36,183 INFO L414 AbstractCegarLoop]: === Iteration 53 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:36,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1692452371, now seen corresponding path program 50 times [2018-07-23 15:34:36,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:36,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-23 15:34:36,238 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-23 15:34:36,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-23 15:34:36,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:34:36,239 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 21 states. [2018-07-23 15:34:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,294 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-07-23 15:34:36,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:34:36,294 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-23 15:34:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,295 INFO L225 Difference]: With dead ends: 63 [2018-07-23 15:34:36,295 INFO L226 Difference]: Without dead ends: 41 [2018-07-23 15:34:36,295 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:34:36,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-23 15:34:36,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-23 15:34:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-23 15:34:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-23 15:34:36,312 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 40 [2018-07-23 15:34:36,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,312 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-23 15:34:36,312 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-23 15:34:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-23 15:34:36,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-23 15:34:36,313 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,313 INFO L353 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1] [2018-07-23 15:34:36,313 INFO L414 AbstractCegarLoop]: === Iteration 54 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:36,314 INFO L82 PathProgramCache]: Analyzing trace with hash -492295929, now seen corresponding path program 51 times [2018-07-23 15:34:36,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:36,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,376 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-23 15:34:36,376 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-23 15:34:36,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-23 15:34:36,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:34:36,377 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 21 states. [2018-07-23 15:34:36,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,408 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-07-23 15:34:36,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:34:36,409 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-23 15:34:36,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,409 INFO L225 Difference]: With dead ends: 45 [2018-07-23 15:34:36,409 INFO L226 Difference]: Without dead ends: 42 [2018-07-23 15:34:36,410 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:34:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-23 15:34:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-23 15:34:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-23 15:34:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-07-23 15:34:36,427 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 40 [2018-07-23 15:34:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,427 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-07-23 15:34:36,427 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-23 15:34:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-07-23 15:34:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-23 15:34:36,428 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,428 INFO L353 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1] [2018-07-23 15:34:36,428 INFO L414 AbstractCegarLoop]: === Iteration 55 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:36,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1918633863, now seen corresponding path program 52 times [2018-07-23 15:34:36,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:36,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-23 15:34:36,521 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-23 15:34:36,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-23 15:34:36,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:34:36,522 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 21 states. [2018-07-23 15:34:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,680 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2018-07-23 15:34:36,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:34:36,681 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2018-07-23 15:34:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,682 INFO L225 Difference]: With dead ends: 65 [2018-07-23 15:34:36,682 INFO L226 Difference]: Without dead ends: 62 [2018-07-23 15:34:36,682 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:34:36,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-23 15:34:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2018-07-23 15:34:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-23 15:34:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2018-07-23 15:34:36,704 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 41 [2018-07-23 15:34:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,705 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2018-07-23 15:34:36,705 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-23 15:34:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2018-07-23 15:34:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-23 15:34:36,706 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,706 INFO L353 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1] [2018-07-23 15:34:36,706 INFO L414 AbstractCegarLoop]: === Iteration 56 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:36,706 INFO L82 PathProgramCache]: Analyzing trace with hash -651953913, now seen corresponding path program 53 times [2018-07-23 15:34:36,707 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 190 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:36,777 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-23 15:34:36,778 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-23 15:34:36,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-23 15:34:36,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:34:36,779 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 22 states. [2018-07-23 15:34:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,845 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2018-07-23 15:34:36,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:34:36,845 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-23 15:34:36,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,846 INFO L225 Difference]: With dead ends: 66 [2018-07-23 15:34:36,846 INFO L226 Difference]: Without dead ends: 43 [2018-07-23 15:34:36,847 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:34:36,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-23 15:34:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-23 15:34:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-23 15:34:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-23 15:34:36,866 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 42 [2018-07-23 15:34:36,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,866 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-23 15:34:36,867 INFO L472 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-23 15:34:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-23 15:34:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-23 15:34:36,867 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,867 INFO L353 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1] [2018-07-23 15:34:36,868 INFO L414 AbstractCegarLoop]: === Iteration 57 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:36,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2101809875, now seen corresponding path program 54 times [2018-07-23 15:34:36,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 190 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:36,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-23 15:34:36,944 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-23 15:34:36,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-23 15:34:36,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:34:36,945 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 22 states. [2018-07-23 15:34:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,982 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2018-07-23 15:34:36,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:34:36,983 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-23 15:34:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,983 INFO L225 Difference]: With dead ends: 47 [2018-07-23 15:34:36,984 INFO L226 Difference]: Without dead ends: 44 [2018-07-23 15:34:36,984 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:34:36,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-23 15:34:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-23 15:34:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-23 15:34:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2018-07-23 15:34:37,004 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2018-07-23 15:34:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,005 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2018-07-23 15:34:37,005 INFO L472 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-23 15:34:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2018-07-23 15:34:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-23 15:34:37,005 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:37,006 INFO L353 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1] [2018-07-23 15:34:37,006 INFO L414 AbstractCegarLoop]: === Iteration 58 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:37,006 INFO L82 PathProgramCache]: Analyzing trace with hash -731658207, now seen corresponding path program 55 times [2018-07-23 15:34:37,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:37,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:37,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-23 15:34:37,154 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-23 15:34:37,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-23 15:34:37,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:34:37,156 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 22 states. [2018-07-23 15:34:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:37,329 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-07-23 15:34:37,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:34:37,329 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 43 [2018-07-23 15:34:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:37,330 INFO L225 Difference]: With dead ends: 68 [2018-07-23 15:34:37,330 INFO L226 Difference]: Without dead ends: 65 [2018-07-23 15:34:37,331 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:34:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-23 15:34:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2018-07-23 15:34:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-23 15:34:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-07-23 15:34:37,354 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 43 [2018-07-23 15:34:37,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,355 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-07-23 15:34:37,355 INFO L472 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-23 15:34:37,355 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-07-23 15:34:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-23 15:34:37,355 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:37,356 INFO L353 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1] [2018-07-23 15:34:37,356 INFO L414 AbstractCegarLoop]: === Iteration 59 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:37,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1206629459, now seen corresponding path program 56 times [2018-07-23 15:34:37,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:37,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:37,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-23 15:34:37,418 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-23 15:34:37,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-23 15:34:37,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:34:37,419 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 23 states. [2018-07-23 15:34:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:37,491 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2018-07-23 15:34:37,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:34:37,491 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-23 15:34:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:37,492 INFO L225 Difference]: With dead ends: 69 [2018-07-23 15:34:37,492 INFO L226 Difference]: Without dead ends: 45 [2018-07-23 15:34:37,492 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:34:37,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-23 15:34:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-23 15:34:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-23 15:34:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-23 15:34:37,514 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 44 [2018-07-23 15:34:37,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,515 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-23 15:34:37,515 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-23 15:34:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-23 15:34:37,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-23 15:34:37,515 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:37,516 INFO L353 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1] [2018-07-23 15:34:37,516 INFO L414 AbstractCegarLoop]: === Iteration 60 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:37,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1092475975, now seen corresponding path program 57 times [2018-07-23 15:34:37,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:37,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:37,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-23 15:34:37,584 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-23 15:34:37,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-23 15:34:37,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:34:37,584 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 23 states. [2018-07-23 15:34:37,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:37,621 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-07-23 15:34:37,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:34:37,622 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-23 15:34:37,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:37,622 INFO L225 Difference]: With dead ends: 49 [2018-07-23 15:34:37,623 INFO L226 Difference]: Without dead ends: 46 [2018-07-23 15:34:37,623 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:34:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-23 15:34:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-23 15:34:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-23 15:34:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-07-23 15:34:37,644 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 44 [2018-07-23 15:34:37,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,645 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-07-23 15:34:37,645 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-23 15:34:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-07-23 15:34:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-23 15:34:37,645 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:37,646 INFO L353 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1] [2018-07-23 15:34:37,646 INFO L414 AbstractCegarLoop]: === Iteration 61 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:37,646 INFO L82 PathProgramCache]: Analyzing trace with hash -493044665, now seen corresponding path program 58 times [2018-07-23 15:34:37,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:37,772 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:37,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-23 15:34:37,772 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-23 15:34:37,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-23 15:34:37,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:34:37,773 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 23 states. [2018-07-23 15:34:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:37,953 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2018-07-23 15:34:37,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:34:37,953 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2018-07-23 15:34:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:37,954 INFO L225 Difference]: With dead ends: 71 [2018-07-23 15:34:37,954 INFO L226 Difference]: Without dead ends: 68 [2018-07-23 15:34:37,955 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:34:37,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-23 15:34:37,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2018-07-23 15:34:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-23 15:34:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-07-23 15:34:37,980 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 45 [2018-07-23 15:34:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,981 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-07-23 15:34:37,981 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-23 15:34:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-07-23 15:34:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-23 15:34:37,981 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:37,982 INFO L353 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1] [2018-07-23 15:34:37,982 INFO L414 AbstractCegarLoop]: === Iteration 62 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:37,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1895423047, now seen corresponding path program 59 times [2018-07-23 15:34:37,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 231 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:38,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:38,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-23 15:34:38,070 INFO L450 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-23 15:34:38,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-23 15:34:38,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:34:38,070 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 24 states. [2018-07-23 15:34:38,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:38,138 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2018-07-23 15:34:38,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:34:38,138 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-23 15:34:38,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:38,139 INFO L225 Difference]: With dead ends: 72 [2018-07-23 15:34:38,139 INFO L226 Difference]: Without dead ends: 47 [2018-07-23 15:34:38,139 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:34:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-23 15:34:38,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-23 15:34:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-23 15:34:38,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-23 15:34:38,161 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 46 [2018-07-23 15:34:38,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:38,161 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-23 15:34:38,161 INFO L472 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-23 15:34:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-23 15:34:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-23 15:34:38,162 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:38,162 INFO L353 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1] [2018-07-23 15:34:38,162 INFO L414 AbstractCegarLoop]: === Iteration 63 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:38,162 INFO L82 PathProgramCache]: Analyzing trace with hash 153247469, now seen corresponding path program 60 times [2018-07-23 15:34:38,162 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 231 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:38,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:38,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-23 15:34:38,241 INFO L450 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-23 15:34:38,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-23 15:34:38,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:34:38,242 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-07-23 15:34:38,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:38,284 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-07-23 15:34:38,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:34:38,284 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-23 15:34:38,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:38,285 INFO L225 Difference]: With dead ends: 51 [2018-07-23 15:34:38,285 INFO L226 Difference]: Without dead ends: 48 [2018-07-23 15:34:38,286 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:34:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-23 15:34:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-23 15:34:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-23 15:34:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2018-07-23 15:34:38,307 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2018-07-23 15:34:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:38,307 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2018-07-23 15:34:38,307 INFO L472 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-23 15:34:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2018-07-23 15:34:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-23 15:34:38,308 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:38,308 INFO L353 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1] [2018-07-23 15:34:38,308 INFO L414 AbstractCegarLoop]: === Iteration 64 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:38,308 INFO L82 PathProgramCache]: Analyzing trace with hash 455642721, now seen corresponding path program 61 times [2018-07-23 15:34:38,309 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:38,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:38,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-23 15:34:38,414 INFO L450 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-23 15:34:38,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-23 15:34:38,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:34:38,415 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 24 states. [2018-07-23 15:34:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:38,606 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2018-07-23 15:34:38,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:34:38,606 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 47 [2018-07-23 15:34:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:38,607 INFO L225 Difference]: With dead ends: 74 [2018-07-23 15:34:38,607 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 15:34:38,607 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:34:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 15:34:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 50. [2018-07-23 15:34:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-23 15:34:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-07-23 15:34:38,634 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 47 [2018-07-23 15:34:38,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:38,634 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-07-23 15:34:38,634 INFO L472 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-23 15:34:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-07-23 15:34:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-23 15:34:38,635 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:38,635 INFO L353 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1] [2018-07-23 15:34:38,635 INFO L414 AbstractCegarLoop]: === Iteration 65 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:38,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1239960941, now seen corresponding path program 62 times [2018-07-23 15:34:38,635 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:38,699 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:38,699 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-23 15:34:38,699 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-23 15:34:38,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-23 15:34:38,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:34:38,700 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 25 states. [2018-07-23 15:34:38,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:38,770 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-07-23 15:34:38,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:34:38,771 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-23 15:34:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:38,772 INFO L225 Difference]: With dead ends: 75 [2018-07-23 15:34:38,772 INFO L226 Difference]: Without dead ends: 49 [2018-07-23 15:34:38,772 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:34:38,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-23 15:34:38,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-23 15:34:38,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-23 15:34:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-23 15:34:38,795 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 48 [2018-07-23 15:34:38,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:38,796 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-23 15:34:38,796 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-23 15:34:38,796 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-23 15:34:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-23 15:34:38,796 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:38,796 INFO L353 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1] [2018-07-23 15:34:38,797 INFO L414 AbstractCegarLoop]: === Iteration 66 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:38,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1227874425, now seen corresponding path program 63 times [2018-07-23 15:34:38,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:38,868 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:38,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-23 15:34:38,868 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-23 15:34:38,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-23 15:34:38,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:34:38,869 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 25 states. [2018-07-23 15:34:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:38,909 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-07-23 15:34:38,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:34:38,909 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-23 15:34:38,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:38,911 INFO L225 Difference]: With dead ends: 53 [2018-07-23 15:34:38,911 INFO L226 Difference]: Without dead ends: 50 [2018-07-23 15:34:38,912 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:34:38,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-23 15:34:38,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-23 15:34:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-23 15:34:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2018-07-23 15:34:38,935 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 48 [2018-07-23 15:34:38,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:38,935 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2018-07-23 15:34:38,935 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-23 15:34:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2018-07-23 15:34:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-23 15:34:38,936 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:38,936 INFO L353 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1] [2018-07-23 15:34:38,936 INFO L414 AbstractCegarLoop]: === Iteration 67 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:38,937 INFO L82 PathProgramCache]: Analyzing trace with hash 590536967, now seen corresponding path program 64 times [2018-07-23 15:34:38,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:39,043 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:39,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:39,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-23 15:34:39,044 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-23 15:34:39,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-23 15:34:39,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:34:39,045 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 25 states. [2018-07-23 15:34:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:39,236 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2018-07-23 15:34:39,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:34:39,237 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 49 [2018-07-23 15:34:39,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:39,237 INFO L225 Difference]: With dead ends: 77 [2018-07-23 15:34:39,237 INFO L226 Difference]: Without dead ends: 74 [2018-07-23 15:34:39,238 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:34:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-23 15:34:39,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 52. [2018-07-23 15:34:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-23 15:34:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2018-07-23 15:34:39,263 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 49 [2018-07-23 15:34:39,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:39,263 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2018-07-23 15:34:39,263 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-23 15:34:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2018-07-23 15:34:39,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-23 15:34:39,264 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:39,264 INFO L353 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1] [2018-07-23 15:34:39,264 INFO L414 AbstractCegarLoop]: === Iteration 68 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:39,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1126715271, now seen corresponding path program 65 times [2018-07-23 15:34:39,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 276 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:39,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:39,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-23 15:34:39,331 INFO L450 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-23 15:34:39,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-23 15:34:39,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:34:39,332 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 26 states. [2018-07-23 15:34:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:39,412 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2018-07-23 15:34:39,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-23 15:34:39,412 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-23 15:34:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:39,413 INFO L225 Difference]: With dead ends: 78 [2018-07-23 15:34:39,413 INFO L226 Difference]: Without dead ends: 51 [2018-07-23 15:34:39,414 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:34:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-23 15:34:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-23 15:34:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-23 15:34:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-23 15:34:39,437 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 50 [2018-07-23 15:34:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:39,437 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-23 15:34:39,437 INFO L472 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-23 15:34:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-23 15:34:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-23 15:34:39,438 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:39,438 INFO L353 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1] [2018-07-23 15:34:39,438 INFO L414 AbstractCegarLoop]: === Iteration 69 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:39,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1933230253, now seen corresponding path program 66 times [2018-07-23 15:34:39,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 276 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:39,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:39,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-23 15:34:39,512 INFO L450 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-23 15:34:39,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-23 15:34:39,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:34:39,513 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 26 states. [2018-07-23 15:34:39,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:39,554 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2018-07-23 15:34:39,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-23 15:34:39,555 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-23 15:34:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:39,555 INFO L225 Difference]: With dead ends: 55 [2018-07-23 15:34:39,555 INFO L226 Difference]: Without dead ends: 52 [2018-07-23 15:34:39,556 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:34:39,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-23 15:34:39,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-23 15:34:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-23 15:34:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2018-07-23 15:34:39,581 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2018-07-23 15:34:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:39,582 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2018-07-23 15:34:39,582 INFO L472 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-23 15:34:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2018-07-23 15:34:39,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-23 15:34:39,583 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:39,583 INFO L353 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1] [2018-07-23 15:34:39,583 INFO L414 AbstractCegarLoop]: === Iteration 70 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:39,583 INFO L82 PathProgramCache]: Analyzing trace with hash -199465823, now seen corresponding path program 67 times [2018-07-23 15:34:39,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:39,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:39,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-23 15:34:39,709 INFO L450 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-23 15:34:39,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-23 15:34:39,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:34:39,710 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 26 states. [2018-07-23 15:34:39,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:39,949 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-07-23 15:34:39,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-23 15:34:39,950 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 51 [2018-07-23 15:34:39,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:39,950 INFO L225 Difference]: With dead ends: 80 [2018-07-23 15:34:39,951 INFO L226 Difference]: Without dead ends: 77 [2018-07-23 15:34:39,951 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:34:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-23 15:34:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2018-07-23 15:34:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-23 15:34:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2018-07-23 15:34:39,982 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 51 [2018-07-23 15:34:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:39,983 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2018-07-23 15:34:39,983 INFO L472 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-23 15:34:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2018-07-23 15:34:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-23 15:34:39,984 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:39,984 INFO L353 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1] [2018-07-23 15:34:39,984 INFO L414 AbstractCegarLoop]: === Iteration 71 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:39,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1888534739, now seen corresponding path program 68 times [2018-07-23 15:34:39,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 300 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:40,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:40,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-23 15:34:40,081 INFO L450 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-23 15:34:40,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-23 15:34:40,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:34:40,082 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 27 states. [2018-07-23 15:34:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:40,182 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2018-07-23 15:34:40,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:34:40,182 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-23 15:34:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:40,183 INFO L225 Difference]: With dead ends: 81 [2018-07-23 15:34:40,183 INFO L226 Difference]: Without dead ends: 53 [2018-07-23 15:34:40,184 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:34:40,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-23 15:34:40,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-23 15:34:40,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-23 15:34:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-23 15:34:40,213 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 52 [2018-07-23 15:34:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:40,213 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-23 15:34:40,213 INFO L472 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-23 15:34:40,214 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-23 15:34:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-23 15:34:40,214 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:40,214 INFO L353 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1] [2018-07-23 15:34:40,215 INFO L414 AbstractCegarLoop]: === Iteration 72 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:40,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1638593223, now seen corresponding path program 69 times [2018-07-23 15:34:40,215 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 300 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:40,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:40,338 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-23 15:34:40,338 INFO L450 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-23 15:34:40,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-23 15:34:40,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:34:40,339 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 27 states. [2018-07-23 15:34:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:40,393 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-07-23 15:34:40,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:34:40,394 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-23 15:34:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:40,394 INFO L225 Difference]: With dead ends: 57 [2018-07-23 15:34:40,394 INFO L226 Difference]: Without dead ends: 54 [2018-07-23 15:34:40,395 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:34:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-23 15:34:40,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-23 15:34:40,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-23 15:34:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2018-07-23 15:34:40,419 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 52 [2018-07-23 15:34:40,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:40,419 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2018-07-23 15:34:40,419 INFO L472 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-23 15:34:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2018-07-23 15:34:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-23 15:34:40,420 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:40,420 INFO L353 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1] [2018-07-23 15:34:40,420 INFO L414 AbstractCegarLoop]: === Iteration 73 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:40,420 INFO L82 PathProgramCache]: Analyzing trace with hash -743279161, now seen corresponding path program 70 times [2018-07-23 15:34:40,421 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:40,540 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:40,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-23 15:34:40,540 INFO L450 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-23 15:34:40,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-23 15:34:40,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:34:40,541 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 27 states. [2018-07-23 15:34:40,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:40,760 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2018-07-23 15:34:40,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:34:40,761 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 53 [2018-07-23 15:34:40,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:40,762 INFO L225 Difference]: With dead ends: 83 [2018-07-23 15:34:40,762 INFO L226 Difference]: Without dead ends: 80 [2018-07-23 15:34:40,762 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:34:40,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-23 15:34:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 56. [2018-07-23 15:34:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-23 15:34:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-07-23 15:34:40,790 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 53 [2018-07-23 15:34:40,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:40,790 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-07-23 15:34:40,790 INFO L472 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-23 15:34:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-07-23 15:34:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-23 15:34:40,791 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:40,791 INFO L353 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1] [2018-07-23 15:34:40,791 INFO L414 AbstractCegarLoop]: === Iteration 74 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:40,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1566879033, now seen corresponding path program 71 times [2018-07-23 15:34:40,791 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 325 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:40,867 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:40,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-23 15:34:40,867 INFO L450 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-23 15:34:40,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-23 15:34:40,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:34:40,868 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 28 states. [2018-07-23 15:34:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:40,961 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2018-07-23 15:34:40,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:34:40,961 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-23 15:34:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:40,962 INFO L225 Difference]: With dead ends: 84 [2018-07-23 15:34:40,962 INFO L226 Difference]: Without dead ends: 55 [2018-07-23 15:34:40,962 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:34:40,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-23 15:34:40,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-23 15:34:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-23 15:34:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-23 15:34:40,986 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 54 [2018-07-23 15:34:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:40,986 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-23 15:34:40,986 INFO L472 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-23 15:34:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-23 15:34:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-23 15:34:40,987 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:40,987 INFO L353 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1] [2018-07-23 15:34:40,987 INFO L414 AbstractCegarLoop]: === Iteration 75 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:40,987 INFO L82 PathProgramCache]: Analyzing trace with hash 399905389, now seen corresponding path program 72 times [2018-07-23 15:34:40,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 325 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:41,061 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:41,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-23 15:34:41,062 INFO L450 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-23 15:34:41,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-23 15:34:41,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:34:41,063 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 28 states. [2018-07-23 15:34:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:41,104 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2018-07-23 15:34:41,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:34:41,104 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-23 15:34:41,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:41,105 INFO L225 Difference]: With dead ends: 59 [2018-07-23 15:34:41,105 INFO L226 Difference]: Without dead ends: 56 [2018-07-23 15:34:41,105 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:34:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-23 15:34:41,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-23 15:34:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-23 15:34:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2018-07-23 15:34:41,129 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2018-07-23 15:34:41,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:41,130 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2018-07-23 15:34:41,130 INFO L472 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-23 15:34:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2018-07-23 15:34:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-23 15:34:41,130 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:41,131 INFO L353 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1] [2018-07-23 15:34:41,131 INFO L414 AbstractCegarLoop]: === Iteration 76 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:41,131 INFO L82 PathProgramCache]: Analyzing trace with hash -487896351, now seen corresponding path program 73 times [2018-07-23 15:34:41,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:41,248 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:41,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-23 15:34:41,249 INFO L450 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-23 15:34:41,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-23 15:34:41,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:34:41,250 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 28 states. [2018-07-23 15:34:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:41,470 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2018-07-23 15:34:41,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:34:41,471 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2018-07-23 15:34:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:41,471 INFO L225 Difference]: With dead ends: 86 [2018-07-23 15:34:41,472 INFO L226 Difference]: Without dead ends: 83 [2018-07-23 15:34:41,472 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:34:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-23 15:34:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 58. [2018-07-23 15:34:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-23 15:34:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2018-07-23 15:34:41,501 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 55 [2018-07-23 15:34:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:41,502 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2018-07-23 15:34:41,502 INFO L472 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-23 15:34:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2018-07-23 15:34:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-23 15:34:41,502 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:41,503 INFO L353 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1] [2018-07-23 15:34:41,503 INFO L414 AbstractCegarLoop]: === Iteration 77 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:41,503 INFO L82 PathProgramCache]: Analyzing trace with hash 2055020781, now seen corresponding path program 74 times [2018-07-23 15:34:41,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 351 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:41,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:41,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-23 15:34:41,572 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-23 15:34:41,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-23 15:34:41,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:34:41,573 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 29 states. [2018-07-23 15:34:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:41,662 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2018-07-23 15:34:41,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:34:41,663 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-23 15:34:41,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:41,663 INFO L225 Difference]: With dead ends: 87 [2018-07-23 15:34:41,663 INFO L226 Difference]: Without dead ends: 57 [2018-07-23 15:34:41,664 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:34:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-23 15:34:41,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-23 15:34:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-23 15:34:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-23 15:34:41,690 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 56 [2018-07-23 15:34:41,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:41,691 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-23 15:34:41,691 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-23 15:34:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-23 15:34:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-23 15:34:41,692 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:41,692 INFO L353 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1] [2018-07-23 15:34:41,692 INFO L414 AbstractCegarLoop]: === Iteration 78 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:41,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1399171577, now seen corresponding path program 75 times [2018-07-23 15:34:41,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 351 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:41,767 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:41,767 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-23 15:34:41,768 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-23 15:34:41,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-23 15:34:41,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:34:41,768 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 29 states. [2018-07-23 15:34:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:41,810 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-07-23 15:34:41,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:34:41,811 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-23 15:34:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:41,811 INFO L225 Difference]: With dead ends: 61 [2018-07-23 15:34:41,811 INFO L226 Difference]: Without dead ends: 58 [2018-07-23 15:34:41,812 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:34:41,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-23 15:34:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-23 15:34:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-23 15:34:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2018-07-23 15:34:41,838 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 56 [2018-07-23 15:34:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:41,838 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2018-07-23 15:34:41,838 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-23 15:34:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2018-07-23 15:34:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-23 15:34:41,839 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:41,839 INFO L353 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1] [2018-07-23 15:34:41,839 INFO L414 AbstractCegarLoop]: === Iteration 79 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:41,839 INFO L82 PathProgramCache]: Analyzing trace with hash -424707449, now seen corresponding path program 76 times [2018-07-23 15:34:41,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:41,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:41,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-23 15:34:41,962 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-23 15:34:41,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-23 15:34:41,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:34:41,963 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 29 states. [2018-07-23 15:34:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:42,194 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2018-07-23 15:34:42,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:34:42,195 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 57 [2018-07-23 15:34:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:42,195 INFO L225 Difference]: With dead ends: 89 [2018-07-23 15:34:42,195 INFO L226 Difference]: Without dead ends: 86 [2018-07-23 15:34:42,196 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:34:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-23 15:34:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 60. [2018-07-23 15:34:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-23 15:34:42,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-07-23 15:34:42,225 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 57 [2018-07-23 15:34:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:42,225 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-07-23 15:34:42,226 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-23 15:34:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-07-23 15:34:42,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-23 15:34:42,226 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:42,226 INFO L353 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1] [2018-07-23 15:34:42,226 INFO L414 AbstractCegarLoop]: === Iteration 80 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:42,227 INFO L82 PathProgramCache]: Analyzing trace with hash -281090553, now seen corresponding path program 77 times [2018-07-23 15:34:42,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 378 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:42,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:42,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-23 15:34:42,297 INFO L450 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-23 15:34:42,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-23 15:34:42,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:34:42,297 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 30 states. [2018-07-23 15:34:42,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:42,393 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2018-07-23 15:34:42,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:34:42,394 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-23 15:34:42,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:42,394 INFO L225 Difference]: With dead ends: 90 [2018-07-23 15:34:42,394 INFO L226 Difference]: Without dead ends: 59 [2018-07-23 15:34:42,395 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:34:42,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-23 15:34:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-23 15:34:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-23 15:34:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-23 15:34:42,421 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 58 [2018-07-23 15:34:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:42,422 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-23 15:34:42,422 INFO L472 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-23 15:34:42,422 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-23 15:34:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-23 15:34:42,422 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:42,422 INFO L353 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1] [2018-07-23 15:34:42,423 INFO L414 AbstractCegarLoop]: === Iteration 81 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:42,423 INFO L82 PathProgramCache]: Analyzing trace with hash 13128749, now seen corresponding path program 78 times [2018-07-23 15:34:42,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 378 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:42,498 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:42,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-23 15:34:42,499 INFO L450 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-23 15:34:42,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-23 15:34:42,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:34:42,500 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 30 states. [2018-07-23 15:34:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:42,548 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2018-07-23 15:34:42,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:34:42,548 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-23 15:34:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:42,549 INFO L225 Difference]: With dead ends: 63 [2018-07-23 15:34:42,549 INFO L226 Difference]: Without dead ends: 60 [2018-07-23 15:34:42,549 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:34:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-23 15:34:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-23 15:34:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-23 15:34:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2018-07-23 15:34:42,579 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 58 [2018-07-23 15:34:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:42,580 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2018-07-23 15:34:42,580 INFO L472 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-23 15:34:42,580 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2018-07-23 15:34:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-23 15:34:42,580 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:42,580 INFO L353 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1] [2018-07-23 15:34:42,581 INFO L414 AbstractCegarLoop]: === Iteration 82 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:42,581 INFO L82 PathProgramCache]: Analyzing trace with hash 406929697, now seen corresponding path program 79 times [2018-07-23 15:34:42,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:42,696 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:42,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-23 15:34:42,697 INFO L450 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-23 15:34:42,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-23 15:34:42,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:34:42,698 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 30 states. [2018-07-23 15:34:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:42,933 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2018-07-23 15:34:42,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:34:42,933 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 59 [2018-07-23 15:34:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:42,934 INFO L225 Difference]: With dead ends: 92 [2018-07-23 15:34:42,934 INFO L226 Difference]: Without dead ends: 89 [2018-07-23 15:34:42,935 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:34:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-23 15:34:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 62. [2018-07-23 15:34:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-23 15:34:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2018-07-23 15:34:42,971 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 59 [2018-07-23 15:34:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:42,972 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2018-07-23 15:34:42,972 INFO L472 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-23 15:34:42,972 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2018-07-23 15:34:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-23 15:34:42,973 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:42,973 INFO L353 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1] [2018-07-23 15:34:42,973 INFO L414 AbstractCegarLoop]: === Iteration 83 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:42,973 INFO L82 PathProgramCache]: Analyzing trace with hash -270142803, now seen corresponding path program 80 times [2018-07-23 15:34:42,974 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 406 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:43,068 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:43,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-23 15:34:43,068 INFO L450 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-23 15:34:43,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-23 15:34:43,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:34:43,069 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 31 states. [2018-07-23 15:34:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:43,184 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2018-07-23 15:34:43,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-23 15:34:43,185 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-23 15:34:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:43,185 INFO L225 Difference]: With dead ends: 93 [2018-07-23 15:34:43,185 INFO L226 Difference]: Without dead ends: 61 [2018-07-23 15:34:43,186 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:34:43,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-23 15:34:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-23 15:34:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-23 15:34:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-23 15:34:43,219 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 60 [2018-07-23 15:34:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:43,219 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-23 15:34:43,219 INFO L472 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-23 15:34:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-23 15:34:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-23 15:34:43,220 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:43,220 INFO L353 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1] [2018-07-23 15:34:43,220 INFO L414 AbstractCegarLoop]: === Iteration 84 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:43,220 INFO L82 PathProgramCache]: Analyzing trace with hash 260720967, now seen corresponding path program 81 times [2018-07-23 15:34:43,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 406 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:43,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:43,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-23 15:34:43,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-23 15:34:43,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-23 15:34:43,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:34:43,322 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 31 states. [2018-07-23 15:34:43,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:43,376 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-07-23 15:34:43,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-23 15:34:43,376 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-23 15:34:43,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:43,377 INFO L225 Difference]: With dead ends: 65 [2018-07-23 15:34:43,377 INFO L226 Difference]: Without dead ends: 62 [2018-07-23 15:34:43,378 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:34:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-23 15:34:43,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-23 15:34:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-23 15:34:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2018-07-23 15:34:43,411 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 60 [2018-07-23 15:34:43,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:43,411 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2018-07-23 15:34:43,411 INFO L472 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-23 15:34:43,411 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2018-07-23 15:34:43,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-23 15:34:43,412 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:43,412 INFO L353 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1] [2018-07-23 15:34:43,412 INFO L414 AbstractCegarLoop]: === Iteration 85 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:43,413 INFO L82 PathProgramCache]: Analyzing trace with hash -507646137, now seen corresponding path program 82 times [2018-07-23 15:34:43,413 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:43,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:43,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-23 15:34:43,584 INFO L450 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-23 15:34:43,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-23 15:34:43,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:34:43,585 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 31 states. [2018-07-23 15:34:43,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:43,834 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2018-07-23 15:34:43,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-23 15:34:43,835 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 61 [2018-07-23 15:34:43,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:43,835 INFO L225 Difference]: With dead ends: 95 [2018-07-23 15:34:43,836 INFO L226 Difference]: Without dead ends: 92 [2018-07-23 15:34:43,836 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:34:43,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-23 15:34:43,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 64. [2018-07-23 15:34:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-23 15:34:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2018-07-23 15:34:43,872 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 61 [2018-07-23 15:34:43,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:43,872 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2018-07-23 15:34:43,872 INFO L472 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-23 15:34:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2018-07-23 15:34:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-23 15:34:43,873 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:43,874 INFO L353 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1] [2018-07-23 15:34:43,875 INFO L414 AbstractCegarLoop]: === Iteration 86 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:43,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1442777415, now seen corresponding path program 83 times [2018-07-23 15:34:43,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 435 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:43,953 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:43,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-23 15:34:43,954 INFO L450 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-23 15:34:43,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-23 15:34:43,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:34:43,955 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 32 states. [2018-07-23 15:34:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:44,063 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2018-07-23 15:34:44,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-23 15:34:44,064 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-23 15:34:44,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:44,064 INFO L225 Difference]: With dead ends: 96 [2018-07-23 15:34:44,065 INFO L226 Difference]: Without dead ends: 63 [2018-07-23 15:34:44,065 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:34:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-23 15:34:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-23 15:34:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-23 15:34:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-23 15:34:44,098 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 62 [2018-07-23 15:34:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:44,098 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-23 15:34:44,098 INFO L472 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-23 15:34:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-23 15:34:44,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-23 15:34:44,099 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:44,099 INFO L353 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1] [2018-07-23 15:34:44,099 INFO L414 AbstractCegarLoop]: === Iteration 87 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:44,100 INFO L82 PathProgramCache]: Analyzing trace with hash 719685101, now seen corresponding path program 84 times [2018-07-23 15:34:44,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 435 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:44,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:44,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-23 15:34:44,174 INFO L450 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-23 15:34:44,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-23 15:34:44,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:34:44,175 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 32 states. [2018-07-23 15:34:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:44,223 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2018-07-23 15:34:44,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-23 15:34:44,223 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-23 15:34:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:44,224 INFO L225 Difference]: With dead ends: 67 [2018-07-23 15:34:44,224 INFO L226 Difference]: Without dead ends: 64 [2018-07-23 15:34:44,226 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:34:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-23 15:34:44,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-23 15:34:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-23 15:34:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2018-07-23 15:34:44,256 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2018-07-23 15:34:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:44,256 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2018-07-23 15:34:44,256 INFO L472 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-23 15:34:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2018-07-23 15:34:44,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-23 15:34:44,257 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:44,257 INFO L353 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1] [2018-07-23 15:34:44,257 INFO L414 AbstractCegarLoop]: === Iteration 88 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:44,257 INFO L82 PathProgramCache]: Analyzing trace with hash 835340129, now seen corresponding path program 85 times [2018-07-23 15:34:44,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:44,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:44,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-23 15:34:44,371 INFO L450 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-23 15:34:44,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-23 15:34:44,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:34:44,372 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 32 states. [2018-07-23 15:34:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:44,638 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2018-07-23 15:34:44,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-23 15:34:44,638 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 63 [2018-07-23 15:34:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:44,639 INFO L225 Difference]: With dead ends: 98 [2018-07-23 15:34:44,639 INFO L226 Difference]: Without dead ends: 95 [2018-07-23 15:34:44,640 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:34:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-23 15:34:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 66. [2018-07-23 15:34:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-23 15:34:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2018-07-23 15:34:44,675 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 63 [2018-07-23 15:34:44,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:44,675 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2018-07-23 15:34:44,676 INFO L472 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-23 15:34:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2018-07-23 15:34:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-23 15:34:44,676 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:44,676 INFO L353 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1] [2018-07-23 15:34:44,677 INFO L414 AbstractCegarLoop]: === Iteration 89 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:44,677 INFO L82 PathProgramCache]: Analyzing trace with hash 125678701, now seen corresponding path program 86 times [2018-07-23 15:34:44,677 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 465 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:44,752 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:44,752 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-23 15:34:44,753 INFO L450 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-23 15:34:44,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-23 15:34:44,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:34:44,754 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 33 states. [2018-07-23 15:34:44,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:44,870 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2018-07-23 15:34:44,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:34:44,871 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-23 15:34:44,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:44,871 INFO L225 Difference]: With dead ends: 99 [2018-07-23 15:34:44,871 INFO L226 Difference]: Without dead ends: 65 [2018-07-23 15:34:44,872 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:34:44,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-23 15:34:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-23 15:34:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-23 15:34:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-23 15:34:44,905 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 64 [2018-07-23 15:34:44,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:44,905 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-23 15:34:44,905 INFO L472 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-23 15:34:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-23 15:34:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-23 15:34:44,906 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:44,906 INFO L353 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1] [2018-07-23 15:34:44,906 INFO L414 AbstractCegarLoop]: === Iteration 90 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:44,906 INFO L82 PathProgramCache]: Analyzing trace with hash -815346553, now seen corresponding path program 87 times [2018-07-23 15:34:44,907 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 465 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:44,984 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:44,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-23 15:34:44,985 INFO L450 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-23 15:34:44,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-23 15:34:44,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:34:44,986 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 33 states. [2018-07-23 15:34:45,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:45,039 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-07-23 15:34:45,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:34:45,039 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-23 15:34:45,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:45,040 INFO L225 Difference]: With dead ends: 69 [2018-07-23 15:34:45,040 INFO L226 Difference]: Without dead ends: 66 [2018-07-23 15:34:45,041 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:34:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-23 15:34:45,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-23 15:34:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-23 15:34:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2018-07-23 15:34:45,073 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 64 [2018-07-23 15:34:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:45,074 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2018-07-23 15:34:45,074 INFO L472 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-23 15:34:45,074 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2018-07-23 15:34:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-23 15:34:45,074 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:45,075 INFO L353 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1] [2018-07-23 15:34:45,075 INFO L414 AbstractCegarLoop]: === Iteration 91 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:45,075 INFO L82 PathProgramCache]: Analyzing trace with hash 493999111, now seen corresponding path program 88 times [2018-07-23 15:34:45,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:45,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:45,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-23 15:34:45,200 INFO L450 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-23 15:34:45,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-23 15:34:45,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:34:45,201 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 33 states. [2018-07-23 15:34:45,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:45,468 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2018-07-23 15:34:45,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:34:45,468 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 65 [2018-07-23 15:34:45,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:45,469 INFO L225 Difference]: With dead ends: 101 [2018-07-23 15:34:45,469 INFO L226 Difference]: Without dead ends: 98 [2018-07-23 15:34:45,470 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:34:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-23 15:34:45,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 68. [2018-07-23 15:34:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-23 15:34:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2018-07-23 15:34:45,510 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 65 [2018-07-23 15:34:45,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:45,511 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2018-07-23 15:34:45,511 INFO L472 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-23 15:34:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2018-07-23 15:34:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-23 15:34:45,511 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:45,512 INFO L353 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1] [2018-07-23 15:34:45,512 INFO L414 AbstractCegarLoop]: === Iteration 92 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:45,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1865958265, now seen corresponding path program 89 times [2018-07-23 15:34:45,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 496 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:45,590 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:45,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-23 15:34:45,591 INFO L450 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-23 15:34:45,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-23 15:34:45,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:34:45,592 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 34 states. [2018-07-23 15:34:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:45,717 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2018-07-23 15:34:45,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-23 15:34:45,717 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-23 15:34:45,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:45,718 INFO L225 Difference]: With dead ends: 102 [2018-07-23 15:34:45,718 INFO L226 Difference]: Without dead ends: 67 [2018-07-23 15:34:45,718 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:34:45,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-23 15:34:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-23 15:34:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 15:34:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-23 15:34:45,755 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 66 [2018-07-23 15:34:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:45,755 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-23 15:34:45,755 INFO L472 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-23 15:34:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-23 15:34:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-23 15:34:45,756 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:45,756 INFO L353 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1] [2018-07-23 15:34:45,756 INFO L414 AbstractCegarLoop]: === Iteration 93 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:45,757 INFO L82 PathProgramCache]: Analyzing trace with hash -972970067, now seen corresponding path program 90 times [2018-07-23 15:34:45,757 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 496 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:45,843 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:45,843 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-23 15:34:45,843 INFO L450 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-23 15:34:45,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-23 15:34:45,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:34:45,844 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 34 states. [2018-07-23 15:34:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:45,898 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2018-07-23 15:34:45,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-23 15:34:45,898 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-23 15:34:45,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:45,899 INFO L225 Difference]: With dead ends: 71 [2018-07-23 15:34:45,899 INFO L226 Difference]: Without dead ends: 68 [2018-07-23 15:34:45,899 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:34:45,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-23 15:34:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-23 15:34:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-23 15:34:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2018-07-23 15:34:45,935 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 66 [2018-07-23 15:34:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:45,935 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2018-07-23 15:34:45,935 INFO L472 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-23 15:34:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2018-07-23 15:34:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-23 15:34:45,936 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:45,937 INFO L353 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1] [2018-07-23 15:34:45,937 INFO L414 AbstractCegarLoop]: === Iteration 94 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:45,937 INFO L82 PathProgramCache]: Analyzing trace with hash -97362527, now seen corresponding path program 91 times [2018-07-23 15:34:45,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:46,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:46,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-23 15:34:46,067 INFO L450 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-23 15:34:46,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-23 15:34:46,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:34:46,068 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 34 states. [2018-07-23 15:34:46,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:46,342 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-07-23 15:34:46,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-23 15:34:46,342 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 67 [2018-07-23 15:34:46,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:46,343 INFO L225 Difference]: With dead ends: 104 [2018-07-23 15:34:46,343 INFO L226 Difference]: Without dead ends: 101 [2018-07-23 15:34:46,343 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:34:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-23 15:34:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 70. [2018-07-23 15:34:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-23 15:34:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2018-07-23 15:34:46,385 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 67 [2018-07-23 15:34:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:46,385 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2018-07-23 15:34:46,385 INFO L472 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-23 15:34:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2018-07-23 15:34:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-23 15:34:46,388 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:46,388 INFO L353 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1] [2018-07-23 15:34:46,388 INFO L414 AbstractCegarLoop]: === Iteration 95 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:46,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1276667437, now seen corresponding path program 92 times [2018-07-23 15:34:46,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 528 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:46,492 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:46,492 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-23 15:34:46,492 INFO L450 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-23 15:34:46,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-23 15:34:46,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:34:46,493 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 35 states. [2018-07-23 15:34:46,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:46,617 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2018-07-23 15:34:46,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-23 15:34:46,618 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-23 15:34:46,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:46,619 INFO L225 Difference]: With dead ends: 105 [2018-07-23 15:34:46,619 INFO L226 Difference]: Without dead ends: 69 [2018-07-23 15:34:46,619 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:34:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-23 15:34:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-23 15:34:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-23 15:34:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-23 15:34:46,656 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 68 [2018-07-23 15:34:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:46,657 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-23 15:34:46,657 INFO L472 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-23 15:34:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-23 15:34:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-23 15:34:46,657 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:46,658 INFO L353 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1] [2018-07-23 15:34:46,658 INFO L414 AbstractCegarLoop]: === Iteration 96 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:46,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1105469497, now seen corresponding path program 93 times [2018-07-23 15:34:46,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 528 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:46,736 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:46,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-23 15:34:46,736 INFO L450 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-23 15:34:46,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-23 15:34:46,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:34:46,737 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 35 states. [2018-07-23 15:34:46,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:46,789 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-07-23 15:34:46,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-23 15:34:46,790 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-23 15:34:46,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:46,790 INFO L225 Difference]: With dead ends: 73 [2018-07-23 15:34:46,790 INFO L226 Difference]: Without dead ends: 70 [2018-07-23 15:34:46,791 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:34:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-23 15:34:46,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-23 15:34:46,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-23 15:34:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2018-07-23 15:34:46,826 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 68 [2018-07-23 15:34:46,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:46,826 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2018-07-23 15:34:46,827 INFO L472 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-23 15:34:46,827 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2018-07-23 15:34:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-23 15:34:46,829 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:46,829 INFO L353 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1] [2018-07-23 15:34:46,829 INFO L414 AbstractCegarLoop]: === Iteration 97 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:46,829 INFO L82 PathProgramCache]: Analyzing trace with hash 90122439, now seen corresponding path program 94 times [2018-07-23 15:34:46,829 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:46,954 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:46,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-23 15:34:46,954 INFO L450 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-23 15:34:46,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-23 15:34:46,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:34:46,955 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 35 states. [2018-07-23 15:34:47,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:47,252 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2018-07-23 15:34:47,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-23 15:34:47,252 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 69 [2018-07-23 15:34:47,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:47,253 INFO L225 Difference]: With dead ends: 107 [2018-07-23 15:34:47,253 INFO L226 Difference]: Without dead ends: 104 [2018-07-23 15:34:47,254 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:34:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-23 15:34:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 72. [2018-07-23 15:34:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-23 15:34:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2018-07-23 15:34:47,303 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 69 [2018-07-23 15:34:47,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:47,303 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2018-07-23 15:34:47,303 INFO L472 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-23 15:34:47,304 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2018-07-23 15:34:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-23 15:34:47,304 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:47,304 INFO L353 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1] [2018-07-23 15:34:47,305 INFO L414 AbstractCegarLoop]: === Iteration 98 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:47,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1501233209, now seen corresponding path program 95 times [2018-07-23 15:34:47,305 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 561 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:47,389 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:47,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-23 15:34:47,389 INFO L450 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-23 15:34:47,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-23 15:34:47,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:34:47,390 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 36 states. [2018-07-23 15:34:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:47,535 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2018-07-23 15:34:47,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-23 15:34:47,535 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-23 15:34:47,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:47,536 INFO L225 Difference]: With dead ends: 108 [2018-07-23 15:34:47,536 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 15:34:47,537 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:34:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 15:34:47,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-23 15:34:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-23 15:34:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-23 15:34:47,582 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 70 [2018-07-23 15:34:47,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:47,583 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-23 15:34:47,583 INFO L472 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-23 15:34:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-23 15:34:47,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-23 15:34:47,584 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:47,584 INFO L353 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1] [2018-07-23 15:34:47,584 INFO L414 AbstractCegarLoop]: === Iteration 99 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:47,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1961933165, now seen corresponding path program 96 times [2018-07-23 15:34:47,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 561 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:47,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:47,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-23 15:34:47,679 INFO L450 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-23 15:34:47,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-23 15:34:47,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:34:47,680 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 36 states. [2018-07-23 15:34:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:47,745 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2018-07-23 15:34:47,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-23 15:34:47,745 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-23 15:34:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:47,746 INFO L225 Difference]: With dead ends: 75 [2018-07-23 15:34:47,746 INFO L226 Difference]: Without dead ends: 72 [2018-07-23 15:34:47,747 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:34:47,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-23 15:34:47,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-23 15:34:47,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-23 15:34:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2018-07-23 15:34:47,793 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 70 [2018-07-23 15:34:47,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:47,793 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2018-07-23 15:34:47,794 INFO L472 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-23 15:34:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2018-07-23 15:34:47,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-23 15:34:47,794 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:47,795 INFO L353 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1] [2018-07-23 15:34:47,795 INFO L414 AbstractCegarLoop]: === Iteration 100 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:47,795 INFO L82 PathProgramCache]: Analyzing trace with hash 690324449, now seen corresponding path program 97 times [2018-07-23 15:34:47,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:47,936 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:47,936 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-23 15:34:47,936 INFO L450 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-23 15:34:47,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-23 15:34:47,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:34:47,937 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 36 states. [2018-07-23 15:34:48,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:48,263 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2018-07-23 15:34:48,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-23 15:34:48,263 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 71 [2018-07-23 15:34:48,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:48,265 INFO L225 Difference]: With dead ends: 110 [2018-07-23 15:34:48,265 INFO L226 Difference]: Without dead ends: 107 [2018-07-23 15:34:48,265 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:34:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-23 15:34:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 74. [2018-07-23 15:34:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-23 15:34:48,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2018-07-23 15:34:48,318 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 71 [2018-07-23 15:34:48,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:48,318 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2018-07-23 15:34:48,319 INFO L472 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-23 15:34:48,319 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2018-07-23 15:34:48,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-23 15:34:48,319 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:48,320 INFO L353 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1] [2018-07-23 15:34:48,320 INFO L414 AbstractCegarLoop]: === Iteration 101 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:48,320 INFO L82 PathProgramCache]: Analyzing trace with hash -74840083, now seen corresponding path program 98 times [2018-07-23 15:34:48,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 595 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:48,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:48,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-23 15:34:48,415 INFO L450 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-23 15:34:48,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-23 15:34:48,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:34:48,418 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 37 states. [2018-07-23 15:34:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:48,552 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2018-07-23 15:34:48,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 15:34:48,553 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-23 15:34:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:48,554 INFO L225 Difference]: With dead ends: 111 [2018-07-23 15:34:48,554 INFO L226 Difference]: Without dead ends: 73 [2018-07-23 15:34:48,554 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:34:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-23 15:34:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-23 15:34:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-23 15:34:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-23 15:34:48,602 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 72 [2018-07-23 15:34:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:48,603 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-23 15:34:48,603 INFO L472 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-23 15:34:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-23 15:34:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-23 15:34:48,604 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:48,604 INFO L353 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1] [2018-07-23 15:34:48,604 INFO L414 AbstractCegarLoop]: === Iteration 102 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:48,604 INFO L82 PathProgramCache]: Analyzing trace with hash -90864889, now seen corresponding path program 99 times [2018-07-23 15:34:48,604 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 595 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:48,703 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:48,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-23 15:34:48,704 INFO L450 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-23 15:34:48,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-23 15:34:48,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:34:48,705 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 37 states. [2018-07-23 15:34:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:48,777 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2018-07-23 15:34:48,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 15:34:48,778 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-23 15:34:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:48,779 INFO L225 Difference]: With dead ends: 77 [2018-07-23 15:34:48,779 INFO L226 Difference]: Without dead ends: 74 [2018-07-23 15:34:48,779 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:34:48,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-23 15:34:48,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-23 15:34:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-23 15:34:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2018-07-23 15:34:48,836 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 72 [2018-07-23 15:34:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:48,837 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2018-07-23 15:34:48,837 INFO L472 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-23 15:34:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2018-07-23 15:34:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-23 15:34:48,838 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:48,838 INFO L353 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1] [2018-07-23 15:34:48,838 INFO L414 AbstractCegarLoop]: === Iteration 103 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:48,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1478094215, now seen corresponding path program 100 times [2018-07-23 15:34:48,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:48,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:48,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-23 15:34:48,984 INFO L450 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-23 15:34:48,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-23 15:34:48,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:34:48,985 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 37 states. [2018-07-23 15:34:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:49,324 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2018-07-23 15:34:49,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 15:34:49,324 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 73 [2018-07-23 15:34:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:49,325 INFO L225 Difference]: With dead ends: 113 [2018-07-23 15:34:49,325 INFO L226 Difference]: Without dead ends: 110 [2018-07-23 15:34:49,326 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:34:49,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-23 15:34:49,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 76. [2018-07-23 15:34:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-23 15:34:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2018-07-23 15:34:49,384 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 73 [2018-07-23 15:34:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:49,384 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2018-07-23 15:34:49,385 INFO L472 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-23 15:34:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2018-07-23 15:34:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-23 15:34:49,385 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:49,386 INFO L353 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1] [2018-07-23 15:34:49,386 INFO L414 AbstractCegarLoop]: === Iteration 104 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:49,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1423781113, now seen corresponding path program 101 times [2018-07-23 15:34:49,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 630 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:49,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:49,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-23 15:34:49,511 INFO L450 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-23 15:34:49,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-23 15:34:49,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:34:49,513 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 38 states. [2018-07-23 15:34:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:49,668 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2018-07-23 15:34:49,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-23 15:34:49,668 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-23 15:34:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:49,669 INFO L225 Difference]: With dead ends: 114 [2018-07-23 15:34:49,669 INFO L226 Difference]: Without dead ends: 75 [2018-07-23 15:34:49,670 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:34:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-23 15:34:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-23 15:34:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-23 15:34:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-23 15:34:49,727 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 74 [2018-07-23 15:34:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:49,727 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-23 15:34:49,727 INFO L472 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-23 15:34:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-23 15:34:49,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-23 15:34:49,728 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:49,729 INFO L353 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1] [2018-07-23 15:34:49,729 INFO L414 AbstractCegarLoop]: === Iteration 105 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:49,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1920550099, now seen corresponding path program 102 times [2018-07-23 15:34:49,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 630 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:49,893 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:49,893 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-23 15:34:49,893 INFO L450 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-23 15:34:49,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-23 15:34:49,894 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:34:49,894 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 38 states. [2018-07-23 15:34:49,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:49,964 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2018-07-23 15:34:49,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-23 15:34:49,964 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-23 15:34:49,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:49,965 INFO L225 Difference]: With dead ends: 79 [2018-07-23 15:34:49,965 INFO L226 Difference]: Without dead ends: 76 [2018-07-23 15:34:49,966 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:34:49,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-23 15:34:50,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-23 15:34:50,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-23 15:34:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2018-07-23 15:34:50,022 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2018-07-23 15:34:50,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:50,023 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2018-07-23 15:34:50,023 INFO L472 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-23 15:34:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2018-07-23 15:34:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-23 15:34:50,024 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:50,024 INFO L353 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1] [2018-07-23 15:34:50,024 INFO L414 AbstractCegarLoop]: === Iteration 106 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:50,024 INFO L82 PathProgramCache]: Analyzing trace with hash 592427553, now seen corresponding path program 103 times [2018-07-23 15:34:50,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:50,188 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:50,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-23 15:34:50,189 INFO L450 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-23 15:34:50,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-23 15:34:50,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:34:50,189 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 38 states. [2018-07-23 15:34:50,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:50,528 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2018-07-23 15:34:50,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-23 15:34:50,528 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 75 [2018-07-23 15:34:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:50,533 INFO L225 Difference]: With dead ends: 116 [2018-07-23 15:34:50,533 INFO L226 Difference]: Without dead ends: 113 [2018-07-23 15:34:50,534 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:34:50,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-23 15:34:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 78. [2018-07-23 15:34:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-23 15:34:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2018-07-23 15:34:50,583 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 75 [2018-07-23 15:34:50,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:50,584 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2018-07-23 15:34:50,584 INFO L472 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-23 15:34:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2018-07-23 15:34:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-23 15:34:50,584 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:50,585 INFO L353 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1] [2018-07-23 15:34:50,585 INFO L414 AbstractCegarLoop]: === Iteration 107 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:50,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1185323437, now seen corresponding path program 104 times [2018-07-23 15:34:50,585 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 666 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:50,677 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:50,677 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-23 15:34:50,677 INFO L450 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-23 15:34:50,678 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-23 15:34:50,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:34:50,678 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 39 states. [2018-07-23 15:34:50,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:50,842 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2018-07-23 15:34:50,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:34:50,842 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-23 15:34:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:50,843 INFO L225 Difference]: With dead ends: 117 [2018-07-23 15:34:50,843 INFO L226 Difference]: Without dead ends: 77 [2018-07-23 15:34:50,844 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:34:50,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-23 15:34:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-23 15:34:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-23 15:34:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-23 15:34:50,892 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 76 [2018-07-23 15:34:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:50,892 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-23 15:34:50,893 INFO L472 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-23 15:34:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-23 15:34:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-23 15:34:50,893 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:50,894 INFO L353 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1] [2018-07-23 15:34:50,894 INFO L414 AbstractCegarLoop]: === Iteration 108 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:50,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1329613241, now seen corresponding path program 105 times [2018-07-23 15:34:50,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 666 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:50,997 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:50,998 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-23 15:34:50,998 INFO L450 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-23 15:34:50,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-23 15:34:50,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:34:50,999 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 39 states. [2018-07-23 15:34:51,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:51,075 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-07-23 15:34:51,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:34:51,075 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-23 15:34:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:51,076 INFO L225 Difference]: With dead ends: 81 [2018-07-23 15:34:51,076 INFO L226 Difference]: Without dead ends: 78 [2018-07-23 15:34:51,077 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:34:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-23 15:34:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-23 15:34:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-23 15:34:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2018-07-23 15:34:51,131 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 76 [2018-07-23 15:34:51,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:51,131 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2018-07-23 15:34:51,131 INFO L472 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-23 15:34:51,132 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2018-07-23 15:34:51,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-23 15:34:51,132 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:51,132 INFO L353 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1] [2018-07-23 15:34:51,132 INFO L414 AbstractCegarLoop]: === Iteration 109 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:51,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1731600967, now seen corresponding path program 106 times [2018-07-23 15:34:51,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:51,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:51,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:51,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-23 15:34:51,305 INFO L450 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-23 15:34:51,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-23 15:34:51,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:34:51,306 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 39 states. [2018-07-23 15:34:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:51,676 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2018-07-23 15:34:51,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:34:51,676 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 77 [2018-07-23 15:34:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:51,677 INFO L225 Difference]: With dead ends: 119 [2018-07-23 15:34:51,677 INFO L226 Difference]: Without dead ends: 116 [2018-07-23 15:34:51,677 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:34:51,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-23 15:34:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2018-07-23 15:34:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-23 15:34:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2018-07-23 15:34:51,734 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 77 [2018-07-23 15:34:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:51,734 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2018-07-23 15:34:51,734 INFO L472 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-23 15:34:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2018-07-23 15:34:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-23 15:34:51,735 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:51,735 INFO L353 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1] [2018-07-23 15:34:51,735 INFO L414 AbstractCegarLoop]: === Iteration 110 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:51,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2139960903, now seen corresponding path program 107 times [2018-07-23 15:34:51,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 703 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:51,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:51,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-23 15:34:51,834 INFO L450 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-23 15:34:51,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-23 15:34:51,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:34:51,835 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 40 states. [2018-07-23 15:34:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:51,990 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2018-07-23 15:34:51,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-23 15:34:51,990 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-23 15:34:51,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:51,990 INFO L225 Difference]: With dead ends: 120 [2018-07-23 15:34:51,991 INFO L226 Difference]: Without dead ends: 79 [2018-07-23 15:34:51,991 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:34:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-23 15:34:52,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-23 15:34:52,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-23 15:34:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-23 15:34:52,046 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 78 [2018-07-23 15:34:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:52,046 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-23 15:34:52,046 INFO L472 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-23 15:34:52,046 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-23 15:34:52,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-23 15:34:52,047 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:52,047 INFO L353 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1] [2018-07-23 15:34:52,047 INFO L414 AbstractCegarLoop]: === Iteration 111 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:52,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1486335213, now seen corresponding path program 108 times [2018-07-23 15:34:52,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 703 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:52,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:52,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-23 15:34:52,155 INFO L450 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-23 15:34:52,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-23 15:34:52,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:34:52,156 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 40 states. [2018-07-23 15:34:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:52,231 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2018-07-23 15:34:52,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-23 15:34:52,231 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-23 15:34:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:52,232 INFO L225 Difference]: With dead ends: 83 [2018-07-23 15:34:52,232 INFO L226 Difference]: Without dead ends: 80 [2018-07-23 15:34:52,233 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:34:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-23 15:34:52,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-23 15:34:52,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-23 15:34:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2018-07-23 15:34:52,281 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 78 [2018-07-23 15:34:52,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:52,281 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2018-07-23 15:34:52,282 INFO L472 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-23 15:34:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2018-07-23 15:34:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-23 15:34:52,282 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:52,282 INFO L353 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1] [2018-07-23 15:34:52,283 INFO L414 AbstractCegarLoop]: === Iteration 112 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:52,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1168310175, now seen corresponding path program 109 times [2018-07-23 15:34:52,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:52,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:52,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-23 15:34:52,450 INFO L450 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-23 15:34:52,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-23 15:34:52,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:34:52,451 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 40 states. [2018-07-23 15:34:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:52,741 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-07-23 15:34:52,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-23 15:34:52,741 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 79 [2018-07-23 15:34:52,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:52,742 INFO L225 Difference]: With dead ends: 122 [2018-07-23 15:34:52,742 INFO L226 Difference]: Without dead ends: 119 [2018-07-23 15:34:52,742 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:34:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-23 15:34:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 82. [2018-07-23 15:34:52,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-23 15:34:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2018-07-23 15:34:52,792 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 79 [2018-07-23 15:34:52,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:52,792 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2018-07-23 15:34:52,792 INFO L472 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-23 15:34:52,793 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2018-07-23 15:34:52,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-23 15:34:52,793 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:52,793 INFO L353 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1] [2018-07-23 15:34:52,793 INFO L414 AbstractCegarLoop]: === Iteration 113 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:52,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1857938579, now seen corresponding path program 110 times [2018-07-23 15:34:52,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 741 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:52,888 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:52,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-23 15:34:52,889 INFO L450 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-23 15:34:52,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-23 15:34:52,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:34:52,890 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 41 states. [2018-07-23 15:34:53,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:53,064 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2018-07-23 15:34:53,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:34:53,064 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-23 15:34:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:53,066 INFO L225 Difference]: With dead ends: 123 [2018-07-23 15:34:53,066 INFO L226 Difference]: Without dead ends: 81 [2018-07-23 15:34:53,067 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:34:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-23 15:34:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-23 15:34:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-23 15:34:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-23 15:34:53,114 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 80 [2018-07-23 15:34:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:53,114 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-23 15:34:53,114 INFO L472 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-23 15:34:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-23 15:34:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-23 15:34:53,115 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:53,115 INFO L353 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1] [2018-07-23 15:34:53,115 INFO L414 AbstractCegarLoop]: === Iteration 114 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:53,115 INFO L82 PathProgramCache]: Analyzing trace with hash -645498489, now seen corresponding path program 111 times [2018-07-23 15:34:53,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 741 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:53,206 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:53,206 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-23 15:34:53,207 INFO L450 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-23 15:34:53,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-23 15:34:53,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:34:53,207 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 41 states. [2018-07-23 15:34:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:53,264 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2018-07-23 15:34:53,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:34:53,264 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-23 15:34:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:53,265 INFO L225 Difference]: With dead ends: 85 [2018-07-23 15:34:53,265 INFO L226 Difference]: Without dead ends: 82 [2018-07-23 15:34:53,265 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:34:53,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-23 15:34:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-23 15:34:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-23 15:34:53,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2018-07-23 15:34:53,313 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 80 [2018-07-23 15:34:53,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:53,313 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2018-07-23 15:34:53,313 INFO L472 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-23 15:34:53,313 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2018-07-23 15:34:53,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-23 15:34:53,314 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:53,314 INFO L353 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1] [2018-07-23 15:34:53,314 INFO L414 AbstractCegarLoop]: === Iteration 115 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:53,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1464321799, now seen corresponding path program 112 times [2018-07-23 15:34:53,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:53,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:53,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-23 15:34:53,447 INFO L450 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-23 15:34:53,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-23 15:34:53,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:34:53,448 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 41 states. [2018-07-23 15:34:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:53,692 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2018-07-23 15:34:53,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:34:53,692 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 81 [2018-07-23 15:34:53,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:53,693 INFO L225 Difference]: With dead ends: 125 [2018-07-23 15:34:53,693 INFO L226 Difference]: Without dead ends: 122 [2018-07-23 15:34:53,693 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:34:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-23 15:34:53,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 84. [2018-07-23 15:34:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-23 15:34:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2018-07-23 15:34:53,732 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 81 [2018-07-23 15:34:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:53,732 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2018-07-23 15:34:53,732 INFO L472 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-23 15:34:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2018-07-23 15:34:53,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-23 15:34:53,733 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:53,733 INFO L353 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1] [2018-07-23 15:34:53,733 INFO L414 AbstractCegarLoop]: === Iteration 116 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:53,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1850726009, now seen corresponding path program 113 times [2018-07-23 15:34:53,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 780 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:53,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:53,826 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-23 15:34:53,826 INFO L450 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-23 15:34:53,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-23 15:34:53,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:34:53,827 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 42 states. [2018-07-23 15:34:54,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:54,003 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2018-07-23 15:34:54,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-23 15:34:54,003 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-23 15:34:54,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:54,004 INFO L225 Difference]: With dead ends: 126 [2018-07-23 15:34:54,004 INFO L226 Difference]: Without dead ends: 83 [2018-07-23 15:34:54,004 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:34:54,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-23 15:34:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-23 15:34:54,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-23 15:34:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-23 15:34:54,064 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 82 [2018-07-23 15:34:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:54,065 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-23 15:34:54,065 INFO L472 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-23 15:34:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-23 15:34:54,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-23 15:34:54,065 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:54,065 INFO L353 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1] [2018-07-23 15:34:54,066 INFO L414 AbstractCegarLoop]: === Iteration 117 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:54,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1375178413, now seen corresponding path program 114 times [2018-07-23 15:34:54,066 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 780 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:54,175 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:54,175 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-23 15:34:54,175 INFO L450 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-23 15:34:54,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-23 15:34:54,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:34:54,176 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 42 states. [2018-07-23 15:34:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:54,256 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2018-07-23 15:34:54,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-23 15:34:54,256 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-23 15:34:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:54,257 INFO L225 Difference]: With dead ends: 87 [2018-07-23 15:34:54,257 INFO L226 Difference]: Without dead ends: 84 [2018-07-23 15:34:54,257 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:34:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-23 15:34:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-23 15:34:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-23 15:34:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2018-07-23 15:34:54,316 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2018-07-23 15:34:54,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:54,316 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2018-07-23 15:34:54,316 INFO L472 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-23 15:34:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2018-07-23 15:34:54,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-23 15:34:54,317 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:54,317 INFO L353 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1] [2018-07-23 15:34:54,317 INFO L414 AbstractCegarLoop]: === Iteration 118 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:54,318 INFO L82 PathProgramCache]: Analyzing trace with hash -319203679, now seen corresponding path program 115 times [2018-07-23 15:34:54,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:54,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:54,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-23 15:34:54,493 INFO L450 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-23 15:34:54,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-23 15:34:54,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:34:54,494 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 42 states. [2018-07-23 15:34:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:54,887 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2018-07-23 15:34:54,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-23 15:34:54,887 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 83 [2018-07-23 15:34:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:54,888 INFO L225 Difference]: With dead ends: 128 [2018-07-23 15:34:54,888 INFO L226 Difference]: Without dead ends: 125 [2018-07-23 15:34:54,888 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:34:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-23 15:34:54,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 86. [2018-07-23 15:34:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-23 15:34:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2018-07-23 15:34:54,954 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 83 [2018-07-23 15:34:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:54,955 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2018-07-23 15:34:54,955 INFO L472 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-23 15:34:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2018-07-23 15:34:54,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-23 15:34:54,955 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:54,955 INFO L353 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1] [2018-07-23 15:34:54,956 INFO L414 AbstractCegarLoop]: === Iteration 119 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:54,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1305440979, now seen corresponding path program 116 times [2018-07-23 15:34:54,956 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 820 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:55,061 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:55,061 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-23 15:34:55,061 INFO L450 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-23 15:34:55,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-23 15:34:55,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:34:55,062 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 43 states. [2018-07-23 15:34:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:55,220 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2018-07-23 15:34:55,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-23 15:34:55,220 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-23 15:34:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:55,221 INFO L225 Difference]: With dead ends: 129 [2018-07-23 15:34:55,221 INFO L226 Difference]: Without dead ends: 85 [2018-07-23 15:34:55,221 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:34:55,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-23 15:34:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-23 15:34:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-23 15:34:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-23 15:34:55,276 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 84 [2018-07-23 15:34:55,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:55,276 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-23 15:34:55,276 INFO L472 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-23 15:34:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-23 15:34:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-23 15:34:55,277 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:55,277 INFO L353 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1] [2018-07-23 15:34:55,277 INFO L414 AbstractCegarLoop]: === Iteration 120 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:55,277 INFO L82 PathProgramCache]: Analyzing trace with hash -86651705, now seen corresponding path program 117 times [2018-07-23 15:34:55,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 820 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:55,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:55,380 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-23 15:34:55,380 INFO L450 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-23 15:34:55,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-23 15:34:55,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:34:55,381 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 43 states. [2018-07-23 15:34:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:55,450 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-07-23 15:34:55,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-23 15:34:55,450 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-23 15:34:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:55,451 INFO L225 Difference]: With dead ends: 89 [2018-07-23 15:34:55,451 INFO L226 Difference]: Without dead ends: 86 [2018-07-23 15:34:55,452 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:34:55,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-23 15:34:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-23 15:34:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-23 15:34:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2018-07-23 15:34:55,496 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 84 [2018-07-23 15:34:55,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:55,497 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2018-07-23 15:34:55,497 INFO L472 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-23 15:34:55,497 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2018-07-23 15:34:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-23 15:34:55,497 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:55,497 INFO L353 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1] [2018-07-23 15:34:55,498 INFO L414 AbstractCegarLoop]: === Iteration 121 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:55,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1608702919, now seen corresponding path program 118 times [2018-07-23 15:34:55,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:55,669 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:55,669 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-23 15:34:55,670 INFO L450 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-23 15:34:55,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-23 15:34:55,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:34:55,671 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 43 states. [2018-07-23 15:34:56,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:56,150 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2018-07-23 15:34:56,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-23 15:34:56,151 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 85 [2018-07-23 15:34:56,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:56,151 INFO L225 Difference]: With dead ends: 131 [2018-07-23 15:34:56,152 INFO L226 Difference]: Without dead ends: 128 [2018-07-23 15:34:56,152 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:34:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-23 15:34:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 88. [2018-07-23 15:34:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-23 15:34:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2018-07-23 15:34:56,234 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 85 [2018-07-23 15:34:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:56,235 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2018-07-23 15:34:56,235 INFO L472 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-23 15:34:56,235 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2018-07-23 15:34:56,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-23 15:34:56,236 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:56,236 INFO L353 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1] [2018-07-23 15:34:56,236 INFO L414 AbstractCegarLoop]: === Iteration 122 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:56,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1669878585, now seen corresponding path program 119 times [2018-07-23 15:34:56,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 861 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:56,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:56,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-23 15:34:56,390 INFO L450 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-23 15:34:56,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-23 15:34:56,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:34:56,391 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 44 states. [2018-07-23 15:34:56,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:56,624 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2018-07-23 15:34:56,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-23 15:34:56,624 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-23 15:34:56,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:56,625 INFO L225 Difference]: With dead ends: 132 [2018-07-23 15:34:56,625 INFO L226 Difference]: Without dead ends: 87 [2018-07-23 15:34:56,625 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:34:56,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-23 15:34:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-23 15:34:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-23 15:34:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-23 15:34:56,700 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 86 [2018-07-23 15:34:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:56,700 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-23 15:34:56,700 INFO L472 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-23 15:34:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-23 15:34:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-23 15:34:56,701 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:56,701 INFO L353 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1] [2018-07-23 15:34:56,701 INFO L414 AbstractCegarLoop]: === Iteration 123 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:56,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1752850541, now seen corresponding path program 120 times [2018-07-23 15:34:56,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 861 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:56,867 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:56,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-23 15:34:56,868 INFO L450 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-23 15:34:56,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-23 15:34:56,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:34:56,869 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 44 states. [2018-07-23 15:34:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:56,970 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2018-07-23 15:34:56,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-23 15:34:56,970 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-23 15:34:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:56,971 INFO L225 Difference]: With dead ends: 91 [2018-07-23 15:34:56,971 INFO L226 Difference]: Without dead ends: 88 [2018-07-23 15:34:56,972 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:34:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-23 15:34:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-23 15:34:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-23 15:34:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2018-07-23 15:34:57,049 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2018-07-23 15:34:57,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:57,050 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2018-07-23 15:34:57,050 INFO L472 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-23 15:34:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2018-07-23 15:34:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-23 15:34:57,050 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:57,051 INFO L353 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1] [2018-07-23 15:34:57,051 INFO L414 AbstractCegarLoop]: === Iteration 124 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1496269599, now seen corresponding path program 121 times [2018-07-23 15:34:57,051 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:57,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:57,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-23 15:34:57,316 INFO L450 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-23 15:34:57,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-23 15:34:57,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:34:57,316 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 44 states. [2018-07-23 15:34:57,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:57,722 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2018-07-23 15:34:57,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-23 15:34:57,722 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 87 [2018-07-23 15:34:57,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:57,723 INFO L225 Difference]: With dead ends: 134 [2018-07-23 15:34:57,723 INFO L226 Difference]: Without dead ends: 131 [2018-07-23 15:34:57,723 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:34:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-23 15:34:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 90. [2018-07-23 15:34:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-23 15:34:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2018-07-23 15:34:57,771 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 87 [2018-07-23 15:34:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:57,771 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2018-07-23 15:34:57,772 INFO L472 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-23 15:34:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2018-07-23 15:34:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-23 15:34:57,772 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:57,772 INFO L353 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1] [2018-07-23 15:34:57,772 INFO L414 AbstractCegarLoop]: === Iteration 125 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:57,772 INFO L82 PathProgramCache]: Analyzing trace with hash 860221165, now seen corresponding path program 122 times [2018-07-23 15:34:57,773 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 903 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:57,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:57,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-23 15:34:57,875 INFO L450 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-23 15:34:57,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-23 15:34:57,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:34:57,876 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 45 states. [2018-07-23 15:34:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:58,066 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2018-07-23 15:34:58,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-23 15:34:58,066 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-23 15:34:58,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:58,067 INFO L225 Difference]: With dead ends: 135 [2018-07-23 15:34:58,067 INFO L226 Difference]: Without dead ends: 89 [2018-07-23 15:34:58,068 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:34:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-23 15:34:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-23 15:34:58,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-23 15:34:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-23 15:34:58,133 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 88 [2018-07-23 15:34:58,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:58,133 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-23 15:34:58,133 INFO L472 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-23 15:34:58,133 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-23 15:34:58,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-23 15:34:58,134 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:58,134 INFO L353 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1] [2018-07-23 15:34:58,134 INFO L414 AbstractCegarLoop]: === Iteration 126 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:58,134 INFO L82 PathProgramCache]: Analyzing trace with hash -409358329, now seen corresponding path program 123 times [2018-07-23 15:34:58,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 903 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:58,254 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:58,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-23 15:34:58,254 INFO L450 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-23 15:34:58,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-23 15:34:58,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:34:58,255 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 45 states. [2018-07-23 15:34:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:58,336 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-07-23 15:34:58,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-23 15:34:58,337 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-23 15:34:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:58,337 INFO L225 Difference]: With dead ends: 93 [2018-07-23 15:34:58,337 INFO L226 Difference]: Without dead ends: 90 [2018-07-23 15:34:58,338 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:34:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-23 15:34:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-23 15:34:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-23 15:34:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2018-07-23 15:34:58,395 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 88 [2018-07-23 15:34:58,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:58,396 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2018-07-23 15:34:58,396 INFO L472 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-23 15:34:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2018-07-23 15:34:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-23 15:34:58,396 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:58,396 INFO L353 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1] [2018-07-23 15:34:58,396 INFO L414 AbstractCegarLoop]: === Iteration 127 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:58,397 INFO L82 PathProgramCache]: Analyzing trace with hash 194732167, now seen corresponding path program 124 times [2018-07-23 15:34:58,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:58,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:58,587 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-23 15:34:58,587 INFO L450 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-23 15:34:58,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-23 15:34:58,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:34:58,588 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 45 states. [2018-07-23 15:34:59,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:59,038 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2018-07-23 15:34:59,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-23 15:34:59,038 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 89 [2018-07-23 15:34:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:59,039 INFO L225 Difference]: With dead ends: 137 [2018-07-23 15:34:59,039 INFO L226 Difference]: Without dead ends: 134 [2018-07-23 15:34:59,039 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:34:59,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-23 15:34:59,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2018-07-23 15:34:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-23 15:34:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2018-07-23 15:34:59,115 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 89 [2018-07-23 15:34:59,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:59,116 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2018-07-23 15:34:59,116 INFO L472 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-23 15:34:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2018-07-23 15:34:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-23 15:34:59,117 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:59,117 INFO L353 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1] [2018-07-23 15:34:59,117 INFO L414 AbstractCegarLoop]: === Iteration 128 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:59,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1741668359, now seen corresponding path program 125 times [2018-07-23 15:34:59,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 946 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:59,242 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:59,243 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-23 15:34:59,243 INFO L450 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-23 15:34:59,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-23 15:34:59,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:34:59,244 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 46 states. [2018-07-23 15:34:59,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:59,463 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2018-07-23 15:34:59,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-23 15:34:59,463 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-23 15:34:59,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:59,464 INFO L225 Difference]: With dead ends: 138 [2018-07-23 15:34:59,464 INFO L226 Difference]: Without dead ends: 91 [2018-07-23 15:34:59,464 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:34:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-23 15:34:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-23 15:34:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-23 15:34:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-23 15:34:59,533 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 90 [2018-07-23 15:34:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:59,533 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-23 15:34:59,533 INFO L472 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-23 15:34:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-23 15:34:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-23 15:34:59,534 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:59,534 INFO L353 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1] [2018-07-23 15:34:59,534 INFO L414 AbstractCegarLoop]: === Iteration 129 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:59,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1039409709, now seen corresponding path program 126 times [2018-07-23 15:34:59,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 946 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:59,658 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:59,658 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-23 15:34:59,659 INFO L450 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-23 15:34:59,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-23 15:34:59,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:34:59,660 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 46 states. [2018-07-23 15:34:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:59,742 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2018-07-23 15:34:59,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-23 15:34:59,742 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-23 15:34:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:59,743 INFO L225 Difference]: With dead ends: 95 [2018-07-23 15:34:59,743 INFO L226 Difference]: Without dead ends: 92 [2018-07-23 15:34:59,743 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:34:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-23 15:34:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-23 15:34:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-23 15:34:59,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2018-07-23 15:34:59,805 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 90 [2018-07-23 15:34:59,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:59,805 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2018-07-23 15:34:59,805 INFO L472 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-23 15:34:59,805 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2018-07-23 15:34:59,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-23 15:34:59,806 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:59,806 INFO L353 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1] [2018-07-23 15:34:59,806 INFO L414 AbstractCegarLoop]: === Iteration 130 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:34:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2138098911, now seen corresponding path program 127 times [2018-07-23 15:34:59,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:00,006 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:00,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-23 15:35:00,006 INFO L450 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-23 15:35:00,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-23 15:35:00,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:35:00,007 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 46 states. [2018-07-23 15:35:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:00,404 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2018-07-23 15:35:00,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-23 15:35:00,404 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 91 [2018-07-23 15:35:00,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:00,405 INFO L225 Difference]: With dead ends: 140 [2018-07-23 15:35:00,405 INFO L226 Difference]: Without dead ends: 137 [2018-07-23 15:35:00,405 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:35:00,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-23 15:35:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 94. [2018-07-23 15:35:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-23 15:35:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2018-07-23 15:35:00,450 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 91 [2018-07-23 15:35:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:00,451 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2018-07-23 15:35:00,451 INFO L472 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-23 15:35:00,451 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2018-07-23 15:35:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 15:35:00,451 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:00,452 INFO L353 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1] [2018-07-23 15:35:00,452 INFO L414 AbstractCegarLoop]: === Iteration 131 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:00,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1856618323, now seen corresponding path program 128 times [2018-07-23 15:35:00,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 990 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:00,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:00,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-23 15:35:00,559 INFO L450 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-23 15:35:00,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-23 15:35:00,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:35:00,560 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 47 states. [2018-07-23 15:35:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:00,699 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2018-07-23 15:35:00,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-23 15:35:00,699 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-23 15:35:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:00,700 INFO L225 Difference]: With dead ends: 141 [2018-07-23 15:35:00,700 INFO L226 Difference]: Without dead ends: 93 [2018-07-23 15:35:00,700 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:35:00,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-23 15:35:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-23 15:35:00,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-23 15:35:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-23 15:35:00,748 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 92 [2018-07-23 15:35:00,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:00,748 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-23 15:35:00,748 INFO L472 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-23 15:35:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-23 15:35:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 15:35:00,749 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:00,749 INFO L353 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1] [2018-07-23 15:35:00,749 INFO L414 AbstractCegarLoop]: === Iteration 132 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:00,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2143167303, now seen corresponding path program 129 times [2018-07-23 15:35:00,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 990 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:00,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:00,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-23 15:35:00,870 INFO L450 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-23 15:35:00,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-23 15:35:00,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:35:00,871 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 47 states. [2018-07-23 15:35:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:00,957 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-07-23 15:35:00,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-23 15:35:00,957 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-23 15:35:00,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:00,957 INFO L225 Difference]: With dead ends: 97 [2018-07-23 15:35:00,957 INFO L226 Difference]: Without dead ends: 94 [2018-07-23 15:35:00,958 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:35:00,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-23 15:35:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-23 15:35:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-23 15:35:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2018-07-23 15:35:01,020 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 92 [2018-07-23 15:35:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:01,021 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2018-07-23 15:35:01,021 INFO L472 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-23 15:35:01,021 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2018-07-23 15:35:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-23 15:35:01,025 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:01,025 INFO L353 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1] [2018-07-23 15:35:01,025 INFO L414 AbstractCegarLoop]: === Iteration 133 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:01,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2013615431, now seen corresponding path program 130 times [2018-07-23 15:35:01,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:01,222 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:01,222 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-23 15:35:01,222 INFO L450 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-23 15:35:01,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-23 15:35:01,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:35:01,223 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 47 states. [2018-07-23 15:35:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:01,615 INFO L93 Difference]: Finished difference Result 143 states and 145 transitions. [2018-07-23 15:35:01,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-23 15:35:01,615 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 93 [2018-07-23 15:35:01,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:01,616 INFO L225 Difference]: With dead ends: 143 [2018-07-23 15:35:01,616 INFO L226 Difference]: Without dead ends: 140 [2018-07-23 15:35:01,616 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:35:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-23 15:35:01,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 96. [2018-07-23 15:35:01,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-23 15:35:01,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2018-07-23 15:35:01,683 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 93 [2018-07-23 15:35:01,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:01,683 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2018-07-23 15:35:01,683 INFO L472 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-23 15:35:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2018-07-23 15:35:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-23 15:35:01,684 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:01,684 INFO L353 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1] [2018-07-23 15:35:01,684 INFO L414 AbstractCegarLoop]: === Iteration 134 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:01,684 INFO L82 PathProgramCache]: Analyzing trace with hash -2002492601, now seen corresponding path program 131 times [2018-07-23 15:35:01,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1035 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:01,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:01,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-23 15:35:01,781 INFO L450 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-23 15:35:01,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-23 15:35:01,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:35:01,781 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 48 states. [2018-07-23 15:35:01,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:01,924 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2018-07-23 15:35:01,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-23 15:35:01,924 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-23 15:35:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:01,925 INFO L225 Difference]: With dead ends: 144 [2018-07-23 15:35:01,925 INFO L226 Difference]: Without dead ends: 95 [2018-07-23 15:35:01,925 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:35:01,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-23 15:35:01,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-23 15:35:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-23 15:35:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-23 15:35:01,965 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 94 [2018-07-23 15:35:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:01,965 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-23 15:35:01,965 INFO L472 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-23 15:35:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-23 15:35:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-23 15:35:01,965 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:01,966 INFO L353 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1] [2018-07-23 15:35:01,966 INFO L414 AbstractCegarLoop]: === Iteration 135 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:01,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1731777517, now seen corresponding path program 132 times [2018-07-23 15:35:01,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1035 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:02,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:02,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-23 15:35:02,058 INFO L450 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-23 15:35:02,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-23 15:35:02,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:35:02,059 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 48 states. [2018-07-23 15:35:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:02,116 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2018-07-23 15:35:02,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-23 15:35:02,116 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-23 15:35:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:02,117 INFO L225 Difference]: With dead ends: 99 [2018-07-23 15:35:02,117 INFO L226 Difference]: Without dead ends: 96 [2018-07-23 15:35:02,117 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:35:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-23 15:35:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-23 15:35:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-23 15:35:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2018-07-23 15:35:02,162 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 94 [2018-07-23 15:35:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:02,162 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2018-07-23 15:35:02,162 INFO L472 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-23 15:35:02,162 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2018-07-23 15:35:02,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-23 15:35:02,163 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:02,163 INFO L353 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1] [2018-07-23 15:35:02,163 INFO L414 AbstractCegarLoop]: === Iteration 136 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:02,163 INFO L82 PathProgramCache]: Analyzing trace with hash 2145433953, now seen corresponding path program 133 times [2018-07-23 15:35:02,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:02,334 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:02,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-23 15:35:02,334 INFO L450 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-23 15:35:02,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-23 15:35:02,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:35:02,335 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 48 states. [2018-07-23 15:35:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:02,657 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2018-07-23 15:35:02,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-23 15:35:02,658 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 95 [2018-07-23 15:35:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:02,658 INFO L225 Difference]: With dead ends: 146 [2018-07-23 15:35:02,658 INFO L226 Difference]: Without dead ends: 143 [2018-07-23 15:35:02,659 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:35:02,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-23 15:35:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 98. [2018-07-23 15:35:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-23 15:35:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2018-07-23 15:35:02,704 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 95 [2018-07-23 15:35:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:02,705 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2018-07-23 15:35:02,705 INFO L472 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-23 15:35:02,705 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2018-07-23 15:35:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-23 15:35:02,705 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:02,705 INFO L353 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1] [2018-07-23 15:35:02,705 INFO L414 AbstractCegarLoop]: === Iteration 137 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:02,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2083881581, now seen corresponding path program 134 times [2018-07-23 15:35:02,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1081 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:02,815 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:02,815 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-23 15:35:02,815 INFO L450 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-23 15:35:02,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-23 15:35:02,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:35:02,816 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 49 states. [2018-07-23 15:35:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:03,030 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2018-07-23 15:35:03,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-23 15:35:03,031 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-23 15:35:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:03,031 INFO L225 Difference]: With dead ends: 147 [2018-07-23 15:35:03,031 INFO L226 Difference]: Without dead ends: 97 [2018-07-23 15:35:03,032 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:35:03,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-23 15:35:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-23 15:35:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-23 15:35:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-23 15:35:03,099 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 96 [2018-07-23 15:35:03,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:03,099 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-23 15:35:03,099 INFO L472 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-23 15:35:03,099 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-23 15:35:03,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-23 15:35:03,100 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:03,100 INFO L353 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1] [2018-07-23 15:35:03,100 INFO L414 AbstractCegarLoop]: === Iteration 138 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:03,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1882138247, now seen corresponding path program 135 times [2018-07-23 15:35:03,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1081 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:03,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:03,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-23 15:35:03,251 INFO L450 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-23 15:35:03,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-23 15:35:03,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:35:03,252 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 49 states. [2018-07-23 15:35:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:03,319 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-07-23 15:35:03,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-23 15:35:03,319 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-23 15:35:03,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:03,320 INFO L225 Difference]: With dead ends: 101 [2018-07-23 15:35:03,320 INFO L226 Difference]: Without dead ends: 98 [2018-07-23 15:35:03,320 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:35:03,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-23 15:35:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-23 15:35:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-23 15:35:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2018-07-23 15:35:03,369 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 96 [2018-07-23 15:35:03,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:03,369 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2018-07-23 15:35:03,369 INFO L472 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-23 15:35:03,369 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2018-07-23 15:35:03,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-23 15:35:03,370 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:03,370 INFO L353 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1] [2018-07-23 15:35:03,370 INFO L414 AbstractCegarLoop]: === Iteration 139 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:03,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1783318009, now seen corresponding path program 136 times [2018-07-23 15:35:03,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:03,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:03,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-23 15:35:03,520 INFO L450 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-23 15:35:03,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-23 15:35:03,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:35:03,521 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 49 states. [2018-07-23 15:35:03,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:03,847 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2018-07-23 15:35:03,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-23 15:35:03,847 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 97 [2018-07-23 15:35:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:03,848 INFO L225 Difference]: With dead ends: 149 [2018-07-23 15:35:03,848 INFO L226 Difference]: Without dead ends: 146 [2018-07-23 15:35:03,848 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:35:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-23 15:35:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 100. [2018-07-23 15:35:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-23 15:35:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2018-07-23 15:35:03,902 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 97 [2018-07-23 15:35:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:03,902 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2018-07-23 15:35:03,903 INFO L472 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-23 15:35:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2018-07-23 15:35:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-23 15:35:03,903 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:03,903 INFO L353 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1] [2018-07-23 15:35:03,903 INFO L414 AbstractCegarLoop]: === Iteration 140 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:03,903 INFO L82 PathProgramCache]: Analyzing trace with hash 551655047, now seen corresponding path program 137 times [2018-07-23 15:35:03,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 1128 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:04,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:04,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-23 15:35:04,008 INFO L450 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-23 15:35:04,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-23 15:35:04,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:35:04,009 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 50 states. [2018-07-23 15:35:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:04,173 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2018-07-23 15:35:04,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-23 15:35:04,173 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-23 15:35:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:04,173 INFO L225 Difference]: With dead ends: 150 [2018-07-23 15:35:04,174 INFO L226 Difference]: Without dead ends: 99 [2018-07-23 15:35:04,174 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:35:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-23 15:35:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-23 15:35:04,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-23 15:35:04,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-23 15:35:04,239 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 98 [2018-07-23 15:35:04,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:04,239 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-23 15:35:04,239 INFO L472 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-23 15:35:04,239 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-23 15:35:04,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-23 15:35:04,240 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:04,240 INFO L353 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1] [2018-07-23 15:35:04,240 INFO L414 AbstractCegarLoop]: === Iteration 141 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:04,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1407421011, now seen corresponding path program 138 times [2018-07-23 15:35:04,240 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 1128 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:04,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:04,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-23 15:35:04,338 INFO L450 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-23 15:35:04,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-23 15:35:04,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:35:04,338 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 50 states. [2018-07-23 15:35:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:04,433 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2018-07-23 15:35:04,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-23 15:35:04,433 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-23 15:35:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:04,434 INFO L225 Difference]: With dead ends: 103 [2018-07-23 15:35:04,434 INFO L226 Difference]: Without dead ends: 100 [2018-07-23 15:35:04,434 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:35:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-23 15:35:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-23 15:35:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-23 15:35:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2018-07-23 15:35:04,492 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2018-07-23 15:35:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:04,493 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2018-07-23 15:35:04,493 INFO L472 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-23 15:35:04,493 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2018-07-23 15:35:04,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-23 15:35:04,493 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:04,493 INFO L353 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1] [2018-07-23 15:35:04,493 INFO L414 AbstractCegarLoop]: === Iteration 142 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash -680439903, now seen corresponding path program 139 times [2018-07-23 15:35:04,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:04,659 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:04,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-23 15:35:04,659 INFO L450 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-23 15:35:04,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-23 15:35:04,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:35:04,660 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand 50 states. [2018-07-23 15:35:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:05,002 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2018-07-23 15:35:05,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-23 15:35:05,002 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 99 [2018-07-23 15:35:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:05,002 INFO L225 Difference]: With dead ends: 152 [2018-07-23 15:35:05,002 INFO L226 Difference]: Without dead ends: 149 [2018-07-23 15:35:05,003 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:35:05,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-23 15:35:05,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 102. [2018-07-23 15:35:05,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-23 15:35:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2018-07-23 15:35:05,059 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 99 [2018-07-23 15:35:05,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:05,059 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2018-07-23 15:35:05,059 INFO L472 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-23 15:35:05,059 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2018-07-23 15:35:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 15:35:05,060 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:05,060 INFO L353 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1] [2018-07-23 15:35:05,060 INFO L414 AbstractCegarLoop]: === Iteration 143 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:05,060 INFO L82 PathProgramCache]: Analyzing trace with hash 381137965, now seen corresponding path program 140 times [2018-07-23 15:35:05,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 1176 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:05,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:05,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-23 15:35:05,199 INFO L450 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-23 15:35:05,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-23 15:35:05,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:35:05,200 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand 51 states. [2018-07-23 15:35:05,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:05,451 INFO L93 Difference]: Finished difference Result 153 states and 155 transitions. [2018-07-23 15:35:05,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-23 15:35:05,452 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-23 15:35:05,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:05,452 INFO L225 Difference]: With dead ends: 153 [2018-07-23 15:35:05,452 INFO L226 Difference]: Without dead ends: 101 [2018-07-23 15:35:05,453 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:35:05,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-23 15:35:05,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-23 15:35:05,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-23 15:35:05,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-23 15:35:05,525 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 100 [2018-07-23 15:35:05,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:05,525 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-23 15:35:05,526 INFO L472 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-23 15:35:05,526 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-23 15:35:05,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 15:35:05,526 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:05,526 INFO L353 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1] [2018-07-23 15:35:05,526 INFO L414 AbstractCegarLoop]: === Iteration 144 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:05,527 INFO L82 PathProgramCache]: Analyzing trace with hash -220677689, now seen corresponding path program 141 times [2018-07-23 15:35:05,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 1176 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:05,643 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:05,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-23 15:35:05,643 INFO L450 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-23 15:35:05,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-23 15:35:05,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:35:05,644 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 51 states. [2018-07-23 15:35:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:05,736 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-07-23 15:35:05,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-23 15:35:05,736 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-23 15:35:05,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:05,736 INFO L225 Difference]: With dead ends: 105 [2018-07-23 15:35:05,737 INFO L226 Difference]: Without dead ends: 102 [2018-07-23 15:35:05,737 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:35:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-23 15:35:05,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-23 15:35:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-23 15:35:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2018-07-23 15:35:05,811 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 100 [2018-07-23 15:35:05,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:05,812 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2018-07-23 15:35:05,812 INFO L472 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-23 15:35:05,812 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2018-07-23 15:35:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-23 15:35:05,812 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:05,812 INFO L353 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1] [2018-07-23 15:35:05,812 INFO L414 AbstractCegarLoop]: === Iteration 145 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:05,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1748864711, now seen corresponding path program 142 times [2018-07-23 15:35:05,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:06,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:06,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-23 15:35:06,041 INFO L450 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-23 15:35:06,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-23 15:35:06,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:35:06,042 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 51 states. [2018-07-23 15:35:06,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:06,391 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2018-07-23 15:35:06,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-23 15:35:06,391 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 101 [2018-07-23 15:35:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:06,392 INFO L225 Difference]: With dead ends: 155 [2018-07-23 15:35:06,392 INFO L226 Difference]: Without dead ends: 152 [2018-07-23 15:35:06,392 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:35:06,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-23 15:35:06,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 104. [2018-07-23 15:35:06,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-23 15:35:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2018-07-23 15:35:06,447 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 101 [2018-07-23 15:35:06,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:06,448 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2018-07-23 15:35:06,448 INFO L472 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-23 15:35:06,448 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2018-07-23 15:35:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-23 15:35:06,448 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:06,448 INFO L353 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1] [2018-07-23 15:35:06,448 INFO L414 AbstractCegarLoop]: === Iteration 146 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:06,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1619830329, now seen corresponding path program 143 times [2018-07-23 15:35:06,448 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 1225 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:06,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:06,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-23 15:35:06,535 INFO L450 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-23 15:35:06,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-23 15:35:06,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:35:06,535 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 52 states. [2018-07-23 15:35:06,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:06,684 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2018-07-23 15:35:06,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-23 15:35:06,684 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-23 15:35:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:06,685 INFO L225 Difference]: With dead ends: 156 [2018-07-23 15:35:06,685 INFO L226 Difference]: Without dead ends: 103 [2018-07-23 15:35:06,685 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:35:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-23 15:35:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-23 15:35:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-23 15:35:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-23 15:35:06,753 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 102 [2018-07-23 15:35:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:06,753 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-23 15:35:06,753 INFO L472 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-23 15:35:06,754 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-23 15:35:06,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-23 15:35:06,754 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:06,754 INFO L353 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1] [2018-07-23 15:35:06,754 INFO L414 AbstractCegarLoop]: === Iteration 147 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:06,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1198720877, now seen corresponding path program 144 times [2018-07-23 15:35:06,755 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 1225 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:06,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:06,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-23 15:35:06,846 INFO L450 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-23 15:35:06,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-23 15:35:06,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:35:06,846 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 52 states. [2018-07-23 15:35:06,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:06,911 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2018-07-23 15:35:06,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-23 15:35:06,911 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-23 15:35:06,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:06,911 INFO L225 Difference]: With dead ends: 107 [2018-07-23 15:35:06,911 INFO L226 Difference]: Without dead ends: 104 [2018-07-23 15:35:06,912 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:35:06,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-23 15:35:06,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-23 15:35:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-23 15:35:06,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2018-07-23 15:35:06,969 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 102 [2018-07-23 15:35:06,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:06,970 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2018-07-23 15:35:06,970 INFO L472 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-23 15:35:06,970 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2018-07-23 15:35:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-23 15:35:06,970 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:06,970 INFO L353 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1] [2018-07-23 15:35:06,971 INFO L414 AbstractCegarLoop]: === Iteration 148 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:06,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1494419999, now seen corresponding path program 145 times [2018-07-23 15:35:06,971 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:07,160 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:07,160 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-23 15:35:07,160 INFO L450 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-23 15:35:07,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-23 15:35:07,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:35:07,161 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand 52 states. [2018-07-23 15:35:07,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:07,542 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2018-07-23 15:35:07,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-23 15:35:07,542 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 103 [2018-07-23 15:35:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:07,543 INFO L225 Difference]: With dead ends: 158 [2018-07-23 15:35:07,543 INFO L226 Difference]: Without dead ends: 155 [2018-07-23 15:35:07,543 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:35:07,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-23 15:35:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 106. [2018-07-23 15:35:07,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-23 15:35:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2018-07-23 15:35:07,610 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 103 [2018-07-23 15:35:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:07,611 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2018-07-23 15:35:07,611 INFO L472 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-23 15:35:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2018-07-23 15:35:07,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 15:35:07,611 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:07,611 INFO L353 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1] [2018-07-23 15:35:07,611 INFO L414 AbstractCegarLoop]: === Iteration 149 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:07,612 INFO L82 PathProgramCache]: Analyzing trace with hash 917558765, now seen corresponding path program 146 times [2018-07-23 15:35:07,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 1275 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:07,715 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:07,715 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-23 15:35:07,715 INFO L450 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-23 15:35:07,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-23 15:35:07,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:35:07,716 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 53 states. [2018-07-23 15:35:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:07,899 INFO L93 Difference]: Finished difference Result 159 states and 161 transitions. [2018-07-23 15:35:07,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:35:07,899 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-23 15:35:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:07,900 INFO L225 Difference]: With dead ends: 159 [2018-07-23 15:35:07,900 INFO L226 Difference]: Without dead ends: 105 [2018-07-23 15:35:07,900 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:35:07,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-23 15:35:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-23 15:35:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-23 15:35:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-23 15:35:07,953 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 104 [2018-07-23 15:35:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:07,953 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-23 15:35:07,953 INFO L472 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-23 15:35:07,953 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-23 15:35:07,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 15:35:07,954 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:07,954 INFO L353 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1] [2018-07-23 15:35:07,954 INFO L414 AbstractCegarLoop]: === Iteration 150 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:07,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1901667065, now seen corresponding path program 147 times [2018-07-23 15:35:07,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 1275 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:08,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:08,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-23 15:35:08,058 INFO L450 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-23 15:35:08,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-23 15:35:08,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:35:08,058 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 53 states. [2018-07-23 15:35:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:08,129 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-07-23 15:35:08,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:35:08,129 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-23 15:35:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:08,130 INFO L225 Difference]: With dead ends: 109 [2018-07-23 15:35:08,130 INFO L226 Difference]: Without dead ends: 106 [2018-07-23 15:35:08,130 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:35:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-23 15:35:08,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-23 15:35:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-23 15:35:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2018-07-23 15:35:08,189 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 104 [2018-07-23 15:35:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:08,190 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2018-07-23 15:35:08,190 INFO L472 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-23 15:35:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2018-07-23 15:35:08,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-23 15:35:08,190 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:08,190 INFO L353 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1] [2018-07-23 15:35:08,191 INFO L414 AbstractCegarLoop]: === Iteration 151 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:08,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1177801607, now seen corresponding path program 148 times [2018-07-23 15:35:08,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:08,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:08,363 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:08,363 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-23 15:35:08,364 INFO L450 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-23 15:35:08,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-23 15:35:08,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:35:08,364 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 53 states. [2018-07-23 15:35:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:08,818 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2018-07-23 15:35:08,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:35:08,818 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 105 [2018-07-23 15:35:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:08,819 INFO L225 Difference]: With dead ends: 161 [2018-07-23 15:35:08,819 INFO L226 Difference]: Without dead ends: 158 [2018-07-23 15:35:08,819 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:35:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-23 15:35:08,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 108. [2018-07-23 15:35:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-23 15:35:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2018-07-23 15:35:08,912 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 105 [2018-07-23 15:35:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:08,912 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2018-07-23 15:35:08,912 INFO L472 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-23 15:35:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2018-07-23 15:35:08,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-23 15:35:08,913 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:08,913 INFO L353 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1, 1, 1] [2018-07-23 15:35:08,913 INFO L414 AbstractCegarLoop]: === Iteration 152 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:08,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2142917369, now seen corresponding path program 149 times [2018-07-23 15:35:08,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 1326 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:09,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:09,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-23 15:35:09,004 INFO L450 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-23 15:35:09,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-23 15:35:09,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:35:09,005 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 54 states. [2018-07-23 15:35:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:09,166 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2018-07-23 15:35:09,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-23 15:35:09,167 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-23 15:35:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:09,167 INFO L225 Difference]: With dead ends: 162 [2018-07-23 15:35:09,167 INFO L226 Difference]: Without dead ends: 107 [2018-07-23 15:35:09,168 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:35:09,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-23 15:35:09,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-23 15:35:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-23 15:35:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-23 15:35:09,221 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 106 [2018-07-23 15:35:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:09,221 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-23 15:35:09,221 INFO L472 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-23 15:35:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-23 15:35:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-23 15:35:09,222 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:09,222 INFO L353 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1, 1, 1] [2018-07-23 15:35:09,222 INFO L414 AbstractCegarLoop]: === Iteration 153 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:09,222 INFO L82 PathProgramCache]: Analyzing trace with hash 655395117, now seen corresponding path program 150 times [2018-07-23 15:35:09,222 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 1326 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:09,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:09,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-23 15:35:09,323 INFO L450 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-23 15:35:09,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-23 15:35:09,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:35:09,324 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 54 states. [2018-07-23 15:35:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:09,391 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2018-07-23 15:35:09,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-23 15:35:09,392 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-23 15:35:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:09,392 INFO L225 Difference]: With dead ends: 111 [2018-07-23 15:35:09,392 INFO L226 Difference]: Without dead ends: 108 [2018-07-23 15:35:09,392 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:35:09,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-23 15:35:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-23 15:35:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-23 15:35:09,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2018-07-23 15:35:09,443 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 106 [2018-07-23 15:35:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:09,444 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2018-07-23 15:35:09,444 INFO L472 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-23 15:35:09,444 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2018-07-23 15:35:09,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-23 15:35:09,444 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:09,444 INFO L353 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1] [2018-07-23 15:35:09,444 INFO L414 AbstractCegarLoop]: === Iteration 154 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:09,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1157649375, now seen corresponding path program 151 times [2018-07-23 15:35:09,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:09,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:09,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-23 15:35:09,615 INFO L450 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-23 15:35:09,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-23 15:35:09,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:35:09,616 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 54 states. [2018-07-23 15:35:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:10,008 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2018-07-23 15:35:10,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-23 15:35:10,008 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 107 [2018-07-23 15:35:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:10,009 INFO L225 Difference]: With dead ends: 164 [2018-07-23 15:35:10,009 INFO L226 Difference]: Without dead ends: 161 [2018-07-23 15:35:10,009 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:35:10,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-23 15:35:10,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 110. [2018-07-23 15:35:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-23 15:35:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2018-07-23 15:35:10,065 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 107 [2018-07-23 15:35:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:10,065 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2018-07-23 15:35:10,065 INFO L472 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-23 15:35:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2018-07-23 15:35:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-23 15:35:10,065 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:10,065 INFO L353 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1] [2018-07-23 15:35:10,065 INFO L414 AbstractCegarLoop]: === Iteration 155 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:10,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1527453779, now seen corresponding path program 152 times [2018-07-23 15:35:10,066 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1378 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:10,171 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:10,171 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-23 15:35:10,171 INFO L450 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-23 15:35:10,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-23 15:35:10,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:35:10,172 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 55 states. [2018-07-23 15:35:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:10,368 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2018-07-23 15:35:10,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-23 15:35:10,368 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-23 15:35:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:10,368 INFO L225 Difference]: With dead ends: 165 [2018-07-23 15:35:10,368 INFO L226 Difference]: Without dead ends: 109 [2018-07-23 15:35:10,369 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:35:10,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-23 15:35:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-23 15:35:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-23 15:35:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-23 15:35:10,429 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 108 [2018-07-23 15:35:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:10,430 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-23 15:35:10,430 INFO L472 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-23 15:35:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-23 15:35:10,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-23 15:35:10,430 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:10,430 INFO L353 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1] [2018-07-23 15:35:10,430 INFO L414 AbstractCegarLoop]: === Iteration 156 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:10,430 INFO L82 PathProgramCache]: Analyzing trace with hash -679112633, now seen corresponding path program 153 times [2018-07-23 15:35:10,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 1378 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:10,556 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:10,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-23 15:35:10,556 INFO L450 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-23 15:35:10,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-23 15:35:10,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:35:10,556 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 55 states. [2018-07-23 15:35:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:10,634 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2018-07-23 15:35:10,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-23 15:35:10,634 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-23 15:35:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:10,635 INFO L225 Difference]: With dead ends: 113 [2018-07-23 15:35:10,635 INFO L226 Difference]: Without dead ends: 110 [2018-07-23 15:35:10,635 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:35:10,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-23 15:35:10,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-23 15:35:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-23 15:35:10,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2018-07-23 15:35:10,697 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 108 [2018-07-23 15:35:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:10,697 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2018-07-23 15:35:10,697 INFO L472 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-23 15:35:10,697 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2018-07-23 15:35:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-23 15:35:10,698 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:10,698 INFO L353 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1] [2018-07-23 15:35:10,698 INFO L414 AbstractCegarLoop]: === Iteration 157 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:10,698 INFO L82 PathProgramCache]: Analyzing trace with hash 422283335, now seen corresponding path program 154 times [2018-07-23 15:35:10,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:10,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:10,924 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-23 15:35:10,924 INFO L450 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-23 15:35:10,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-23 15:35:10,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:35:10,925 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 55 states. [2018-07-23 15:35:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:11,348 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2018-07-23 15:35:11,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-23 15:35:11,348 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 109 [2018-07-23 15:35:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:11,348 INFO L225 Difference]: With dead ends: 167 [2018-07-23 15:35:11,348 INFO L226 Difference]: Without dead ends: 164 [2018-07-23 15:35:11,349 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:35:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-23 15:35:11,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 112. [2018-07-23 15:35:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-23 15:35:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2018-07-23 15:35:11,416 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 109 [2018-07-23 15:35:11,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:11,416 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2018-07-23 15:35:11,416 INFO L472 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-23 15:35:11,416 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2018-07-23 15:35:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-23 15:35:11,417 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:11,417 INFO L353 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1, 1, 1] [2018-07-23 15:35:11,417 INFO L414 AbstractCegarLoop]: === Iteration 158 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:11,417 INFO L82 PathProgramCache]: Analyzing trace with hash 205819975, now seen corresponding path program 155 times [2018-07-23 15:35:11,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 1431 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:11,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:11,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-23 15:35:11,562 INFO L450 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-23 15:35:11,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-23 15:35:11,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:35:11,563 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 56 states. [2018-07-23 15:35:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:11,712 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2018-07-23 15:35:11,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-23 15:35:11,712 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-23 15:35:11,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:11,713 INFO L225 Difference]: With dead ends: 168 [2018-07-23 15:35:11,713 INFO L226 Difference]: Without dead ends: 111 [2018-07-23 15:35:11,713 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:35:11,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-23 15:35:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-23 15:35:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-23 15:35:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-23 15:35:11,767 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 110 [2018-07-23 15:35:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:11,767 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-23 15:35:11,767 INFO L472 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-23 15:35:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-23 15:35:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-23 15:35:11,768 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:11,768 INFO L353 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1, 1, 1] [2018-07-23 15:35:11,768 INFO L414 AbstractCegarLoop]: === Iteration 159 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:11,768 INFO L82 PathProgramCache]: Analyzing trace with hash 734591725, now seen corresponding path program 156 times [2018-07-23 15:35:11,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 1431 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:11,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:11,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-23 15:35:11,872 INFO L450 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-23 15:35:11,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-23 15:35:11,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:35:11,872 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 56 states. [2018-07-23 15:35:11,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:11,949 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2018-07-23 15:35:11,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-23 15:35:11,949 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-23 15:35:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:11,950 INFO L225 Difference]: With dead ends: 115 [2018-07-23 15:35:11,950 INFO L226 Difference]: Without dead ends: 112 [2018-07-23 15:35:11,950 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:35:11,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-23 15:35:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-23 15:35:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-23 15:35:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2018-07-23 15:35:12,013 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2018-07-23 15:35:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:12,013 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2018-07-23 15:35:12,014 INFO L472 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-23 15:35:12,014 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2018-07-23 15:35:12,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-23 15:35:12,014 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:12,014 INFO L353 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1] [2018-07-23 15:35:12,014 INFO L414 AbstractCegarLoop]: === Iteration 160 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:12,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1297445473, now seen corresponding path program 157 times [2018-07-23 15:35:12,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:12,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:12,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-23 15:35:12,212 INFO L450 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-23 15:35:12,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-23 15:35:12,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:35:12,212 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 56 states. [2018-07-23 15:35:12,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:12,641 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2018-07-23 15:35:12,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-23 15:35:12,641 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 111 [2018-07-23 15:35:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:12,642 INFO L225 Difference]: With dead ends: 170 [2018-07-23 15:35:12,642 INFO L226 Difference]: Without dead ends: 167 [2018-07-23 15:35:12,642 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:35:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-23 15:35:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 114. [2018-07-23 15:35:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-23 15:35:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2018-07-23 15:35:12,710 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 111 [2018-07-23 15:35:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:12,710 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2018-07-23 15:35:12,710 INFO L472 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-23 15:35:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2018-07-23 15:35:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-23 15:35:12,711 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:12,711 INFO L353 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1, 1, 1] [2018-07-23 15:35:12,711 INFO L414 AbstractCegarLoop]: === Iteration 161 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:12,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1566042477, now seen corresponding path program 158 times [2018-07-23 15:35:12,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 1485 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:12,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:12,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-23 15:35:12,869 INFO L450 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-23 15:35:12,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-23 15:35:12,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:35:12,870 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 57 states. [2018-07-23 15:35:13,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:13,084 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2018-07-23 15:35:13,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-23 15:35:13,084 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-23 15:35:13,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:13,084 INFO L225 Difference]: With dead ends: 171 [2018-07-23 15:35:13,084 INFO L226 Difference]: Without dead ends: 113 [2018-07-23 15:35:13,085 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:35:13,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-23 15:35:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-23 15:35:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-23 15:35:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-23 15:35:13,149 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 112 [2018-07-23 15:35:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:13,149 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-23 15:35:13,149 INFO L472 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-23 15:35:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-23 15:35:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-23 15:35:13,149 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:13,150 INFO L353 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1, 1, 1] [2018-07-23 15:35:13,150 INFO L414 AbstractCegarLoop]: === Iteration 162 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:13,150 INFO L82 PathProgramCache]: Analyzing trace with hash 778097543, now seen corresponding path program 159 times [2018-07-23 15:35:13,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 1485 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:13,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:13,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-23 15:35:13,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-23 15:35:13,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-23 15:35:13,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:35:13,322 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 57 states. [2018-07-23 15:35:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:13,412 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-07-23 15:35:13,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-23 15:35:13,412 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-23 15:35:13,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:13,413 INFO L225 Difference]: With dead ends: 117 [2018-07-23 15:35:13,413 INFO L226 Difference]: Without dead ends: 114 [2018-07-23 15:35:13,413 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:35:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-23 15:35:13,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-23 15:35:13,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-23 15:35:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2018-07-23 15:35:13,477 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 112 [2018-07-23 15:35:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:13,477 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2018-07-23 15:35:13,477 INFO L472 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-23 15:35:13,478 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2018-07-23 15:35:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-23 15:35:13,478 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:13,478 INFO L353 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1] [2018-07-23 15:35:13,478 INFO L414 AbstractCegarLoop]: === Iteration 163 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:13,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1648841465, now seen corresponding path program 160 times [2018-07-23 15:35:13,478 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:13,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:13,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-23 15:35:13,672 INFO L450 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-23 15:35:13,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-23 15:35:13,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:35:13,672 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 57 states. [2018-07-23 15:35:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:14,118 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2018-07-23 15:35:14,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-23 15:35:14,118 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 113 [2018-07-23 15:35:14,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:14,118 INFO L225 Difference]: With dead ends: 173 [2018-07-23 15:35:14,119 INFO L226 Difference]: Without dead ends: 170 [2018-07-23 15:35:14,119 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:35:14,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-23 15:35:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 116. [2018-07-23 15:35:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-23 15:35:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2018-07-23 15:35:14,190 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 113 [2018-07-23 15:35:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:14,190 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2018-07-23 15:35:14,190 INFO L472 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-23 15:35:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2018-07-23 15:35:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-23 15:35:14,190 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:14,191 INFO L353 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1, 1, 1] [2018-07-23 15:35:14,191 INFO L414 AbstractCegarLoop]: === Iteration 164 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:14,191 INFO L82 PathProgramCache]: Analyzing trace with hash 425460615, now seen corresponding path program 161 times [2018-07-23 15:35:14,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 1540 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:14,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:14,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-23 15:35:14,323 INFO L450 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-23 15:35:14,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-23 15:35:14,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:35:14,323 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 58 states. [2018-07-23 15:35:14,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:14,555 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2018-07-23 15:35:14,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-23 15:35:14,555 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-23 15:35:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:14,556 INFO L225 Difference]: With dead ends: 174 [2018-07-23 15:35:14,556 INFO L226 Difference]: Without dead ends: 115 [2018-07-23 15:35:14,557 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:35:14,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-23 15:35:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-23 15:35:14,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-23 15:35:14,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-23 15:35:14,635 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 114 [2018-07-23 15:35:14,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:14,635 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-23 15:35:14,635 INFO L472 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-23 15:35:14,635 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-23 15:35:14,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-23 15:35:14,636 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:14,636 INFO L353 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1, 1, 1] [2018-07-23 15:35:14,636 INFO L414 AbstractCegarLoop]: === Iteration 165 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:14,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1768971437, now seen corresponding path program 162 times [2018-07-23 15:35:14,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 1540 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:14,828 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:14,828 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-23 15:35:14,828 INFO L450 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-23 15:35:14,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-23 15:35:14,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:35:14,829 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 58 states. [2018-07-23 15:35:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:14,905 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2018-07-23 15:35:14,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-23 15:35:14,906 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-23 15:35:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:14,906 INFO L225 Difference]: With dead ends: 119 [2018-07-23 15:35:14,906 INFO L226 Difference]: Without dead ends: 116 [2018-07-23 15:35:14,906 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:35:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-23 15:35:14,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-23 15:35:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-23 15:35:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2018-07-23 15:35:14,964 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 114 [2018-07-23 15:35:14,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:14,964 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2018-07-23 15:35:14,964 INFO L472 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-23 15:35:14,964 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2018-07-23 15:35:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-23 15:35:14,964 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:14,964 INFO L353 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1] [2018-07-23 15:35:14,964 INFO L414 AbstractCegarLoop]: === Iteration 166 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:14,965 INFO L82 PathProgramCache]: Analyzing trace with hash -996521823, now seen corresponding path program 163 times [2018-07-23 15:35:14,965 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:15,141 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:15,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-23 15:35:15,142 INFO L450 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-23 15:35:15,142 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-23 15:35:15,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:35:15,142 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 58 states. [2018-07-23 15:35:15,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:15,592 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2018-07-23 15:35:15,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-23 15:35:15,593 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 115 [2018-07-23 15:35:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:15,593 INFO L225 Difference]: With dead ends: 176 [2018-07-23 15:35:15,593 INFO L226 Difference]: Without dead ends: 173 [2018-07-23 15:35:15,593 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:35:15,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-23 15:35:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 118. [2018-07-23 15:35:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-23 15:35:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2018-07-23 15:35:15,691 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 115 [2018-07-23 15:35:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:15,691 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2018-07-23 15:35:15,691 INFO L472 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-23 15:35:15,692 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2018-07-23 15:35:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-23 15:35:15,692 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:15,692 INFO L353 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1, 1, 1] [2018-07-23 15:35:15,692 INFO L414 AbstractCegarLoop]: === Iteration 167 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:15,692 INFO L82 PathProgramCache]: Analyzing trace with hash -827466963, now seen corresponding path program 164 times [2018-07-23 15:35:15,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1596 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:15,828 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:15,828 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-23 15:35:15,828 INFO L450 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-23 15:35:15,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-23 15:35:15,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:35:15,829 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 59 states. [2018-07-23 15:35:16,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:16,043 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2018-07-23 15:35:16,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-23 15:35:16,043 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-23 15:35:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:16,044 INFO L225 Difference]: With dead ends: 177 [2018-07-23 15:35:16,044 INFO L226 Difference]: Without dead ends: 117 [2018-07-23 15:35:16,044 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:35:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-23 15:35:16,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-23 15:35:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-23 15:35:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-23 15:35:16,106 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 116 [2018-07-23 15:35:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:16,106 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-23 15:35:16,106 INFO L472 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-23 15:35:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-23 15:35:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-23 15:35:16,107 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:16,107 INFO L353 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1, 1, 1] [2018-07-23 15:35:16,107 INFO L414 AbstractCegarLoop]: === Iteration 168 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:16,107 INFO L82 PathProgramCache]: Analyzing trace with hash -2128304441, now seen corresponding path program 165 times [2018-07-23 15:35:16,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1596 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:16,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:16,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-23 15:35:16,240 INFO L450 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-23 15:35:16,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-23 15:35:16,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:35:16,240 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 59 states. [2018-07-23 15:35:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:16,329 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-07-23 15:35:16,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-23 15:35:16,329 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-23 15:35:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:16,329 INFO L225 Difference]: With dead ends: 121 [2018-07-23 15:35:16,330 INFO L226 Difference]: Without dead ends: 118 [2018-07-23 15:35:16,330 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:35:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-23 15:35:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-23 15:35:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-23 15:35:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2018-07-23 15:35:16,395 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 116 [2018-07-23 15:35:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:16,395 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2018-07-23 15:35:16,395 INFO L472 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-23 15:35:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2018-07-23 15:35:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-23 15:35:16,396 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:16,396 INFO L353 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1] [2018-07-23 15:35:16,396 INFO L414 AbstractCegarLoop]: === Iteration 169 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:16,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1552989753, now seen corresponding path program 166 times [2018-07-23 15:35:16,396 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:16,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:16,616 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-23 15:35:16,616 INFO L450 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-23 15:35:16,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-23 15:35:16,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:35:16,617 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 59 states. [2018-07-23 15:35:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:17,097 INFO L93 Difference]: Finished difference Result 179 states and 181 transitions. [2018-07-23 15:35:17,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-23 15:35:17,097 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 117 [2018-07-23 15:35:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:17,098 INFO L225 Difference]: With dead ends: 179 [2018-07-23 15:35:17,098 INFO L226 Difference]: Without dead ends: 176 [2018-07-23 15:35:17,098 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:35:17,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-23 15:35:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 120. [2018-07-23 15:35:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-23 15:35:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2018-07-23 15:35:17,170 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 117 [2018-07-23 15:35:17,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:17,170 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2018-07-23 15:35:17,170 INFO L472 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-23 15:35:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2018-07-23 15:35:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-23 15:35:17,171 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:17,171 INFO L353 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1, 1, 1] [2018-07-23 15:35:17,171 INFO L414 AbstractCegarLoop]: === Iteration 170 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:17,171 INFO L82 PathProgramCache]: Analyzing trace with hash -898103609, now seen corresponding path program 167 times [2018-07-23 15:35:17,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1653 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:17,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:17,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-23 15:35:17,300 INFO L450 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-23 15:35:17,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-23 15:35:17,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:35:17,300 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 60 states. [2018-07-23 15:35:17,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:17,514 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2018-07-23 15:35:17,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-23 15:35:17,514 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-23 15:35:17,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:17,514 INFO L225 Difference]: With dead ends: 180 [2018-07-23 15:35:17,514 INFO L226 Difference]: Without dead ends: 119 [2018-07-23 15:35:17,515 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:35:17,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-23 15:35:17,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-23 15:35:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-23 15:35:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-23 15:35:17,584 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 118 [2018-07-23 15:35:17,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:17,584 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-23 15:35:17,584 INFO L472 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-23 15:35:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-23 15:35:17,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-23 15:35:17,585 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:17,585 INFO L353 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1, 1, 1] [2018-07-23 15:35:17,585 INFO L414 AbstractCegarLoop]: === Iteration 171 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:17,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1725607533, now seen corresponding path program 168 times [2018-07-23 15:35:17,585 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1653 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:17,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:17,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-23 15:35:17,760 INFO L450 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-23 15:35:17,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-23 15:35:17,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:35:17,761 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 60 states. [2018-07-23 15:35:17,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:17,851 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2018-07-23 15:35:17,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-23 15:35:17,851 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-23 15:35:17,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:17,851 INFO L225 Difference]: With dead ends: 123 [2018-07-23 15:35:17,851 INFO L226 Difference]: Without dead ends: 120 [2018-07-23 15:35:17,852 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:35:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-23 15:35:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-23 15:35:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-23 15:35:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2018-07-23 15:35:17,935 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 118 [2018-07-23 15:35:17,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:17,935 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2018-07-23 15:35:17,935 INFO L472 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-23 15:35:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2018-07-23 15:35:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-23 15:35:17,936 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:17,936 INFO L353 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1] [2018-07-23 15:35:17,936 INFO L414 AbstractCegarLoop]: === Iteration 172 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:17,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1954164449, now seen corresponding path program 169 times [2018-07-23 15:35:17,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:18,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:18,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-23 15:35:18,152 INFO L450 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-23 15:35:18,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-23 15:35:18,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:35:18,152 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand 60 states. [2018-07-23 15:35:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:18,658 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-07-23 15:35:18,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-23 15:35:18,658 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 119 [2018-07-23 15:35:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:18,659 INFO L225 Difference]: With dead ends: 182 [2018-07-23 15:35:18,659 INFO L226 Difference]: Without dead ends: 179 [2018-07-23 15:35:18,659 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:35:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-23 15:35:18,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 122. [2018-07-23 15:35:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-23 15:35:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2018-07-23 15:35:18,735 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 119 [2018-07-23 15:35:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:18,736 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2018-07-23 15:35:18,736 INFO L472 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-23 15:35:18,736 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2018-07-23 15:35:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 15:35:18,736 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:18,736 INFO L353 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1, 1, 1] [2018-07-23 15:35:18,736 INFO L414 AbstractCegarLoop]: === Iteration 173 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:18,737 INFO L82 PathProgramCache]: Analyzing trace with hash 449494253, now seen corresponding path program 170 times [2018-07-23 15:35:18,737 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 1711 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:18,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:18,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-23 15:35:18,881 INFO L450 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-23 15:35:18,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-23 15:35:18,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:35:18,882 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 61 states. [2018-07-23 15:35:19,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:19,148 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2018-07-23 15:35:19,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-23 15:35:19,149 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-23 15:35:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:19,149 INFO L225 Difference]: With dead ends: 183 [2018-07-23 15:35:19,149 INFO L226 Difference]: Without dead ends: 121 [2018-07-23 15:35:19,150 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:35:19,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-23 15:35:19,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-23 15:35:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-23 15:35:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-23 15:35:19,225 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 120 [2018-07-23 15:35:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:19,225 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-23 15:35:19,225 INFO L472 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-23 15:35:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-23 15:35:19,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 15:35:19,225 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:19,226 INFO L353 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1, 1, 1] [2018-07-23 15:35:19,226 INFO L414 AbstractCegarLoop]: === Iteration 174 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:19,226 INFO L82 PathProgramCache]: Analyzing trace with hash 180161031, now seen corresponding path program 171 times [2018-07-23 15:35:19,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 1711 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:19,382 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:19,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-23 15:35:19,382 INFO L450 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-23 15:35:19,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-23 15:35:19,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:35:19,383 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 61 states. [2018-07-23 15:35:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:19,496 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-07-23 15:35:19,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-23 15:35:19,496 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-23 15:35:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:19,496 INFO L225 Difference]: With dead ends: 125 [2018-07-23 15:35:19,496 INFO L226 Difference]: Without dead ends: 122 [2018-07-23 15:35:19,497 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:35:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-23 15:35:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-23 15:35:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-23 15:35:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2018-07-23 15:35:19,568 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 120 [2018-07-23 15:35:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:19,569 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2018-07-23 15:35:19,569 INFO L472 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-23 15:35:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2018-07-23 15:35:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-23 15:35:19,569 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:19,569 INFO L353 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1] [2018-07-23 15:35:19,569 INFO L414 AbstractCegarLoop]: === Iteration 175 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:19,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1289963143, now seen corresponding path program 172 times [2018-07-23 15:35:19,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:19,795 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:19,795 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-23 15:35:19,795 INFO L450 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-23 15:35:19,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-23 15:35:19,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:35:19,796 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 61 states. [2018-07-23 15:35:20,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:20,296 INFO L93 Difference]: Finished difference Result 185 states and 187 transitions. [2018-07-23 15:35:20,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-23 15:35:20,297 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 121 [2018-07-23 15:35:20,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:20,297 INFO L225 Difference]: With dead ends: 185 [2018-07-23 15:35:20,297 INFO L226 Difference]: Without dead ends: 182 [2018-07-23 15:35:20,298 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:35:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-23 15:35:20,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 124. [2018-07-23 15:35:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-23 15:35:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2018-07-23 15:35:20,394 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 121 [2018-07-23 15:35:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:20,394 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2018-07-23 15:35:20,394 INFO L472 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-23 15:35:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2018-07-23 15:35:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-23 15:35:20,395 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:20,395 INFO L353 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1, 1, 1] [2018-07-23 15:35:20,395 INFO L414 AbstractCegarLoop]: === Iteration 176 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:20,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1334090247, now seen corresponding path program 173 times [2018-07-23 15:35:20,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1770 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:20,540 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:20,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-23 15:35:20,540 INFO L450 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-23 15:35:20,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-23 15:35:20,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:35:20,541 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 62 states. [2018-07-23 15:35:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:20,799 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2018-07-23 15:35:20,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-23 15:35:20,799 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-23 15:35:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:20,799 INFO L225 Difference]: With dead ends: 186 [2018-07-23 15:35:20,799 INFO L226 Difference]: Without dead ends: 123 [2018-07-23 15:35:20,800 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:35:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-23 15:35:20,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-23 15:35:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-23 15:35:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-23 15:35:20,881 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 122 [2018-07-23 15:35:20,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:20,882 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-23 15:35:20,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-23 15:35:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-23 15:35:20,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-23 15:35:20,882 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:20,882 INFO L353 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1, 1, 1] [2018-07-23 15:35:20,882 INFO L414 AbstractCegarLoop]: === Iteration 177 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:20,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1574694957, now seen corresponding path program 174 times [2018-07-23 15:35:20,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1770 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:21,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:21,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-23 15:35:21,105 INFO L450 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-23 15:35:21,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-23 15:35:21,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:35:21,105 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 62 states. [2018-07-23 15:35:21,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:21,246 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2018-07-23 15:35:21,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-23 15:35:21,246 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-23 15:35:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:21,246 INFO L225 Difference]: With dead ends: 127 [2018-07-23 15:35:21,246 INFO L226 Difference]: Without dead ends: 124 [2018-07-23 15:35:21,247 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:35:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-23 15:35:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-23 15:35:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-23 15:35:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2018-07-23 15:35:21,319 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2018-07-23 15:35:21,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:21,319 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2018-07-23 15:35:21,319 INFO L472 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-23 15:35:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2018-07-23 15:35:21,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-23 15:35:21,320 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:21,320 INFO L353 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1] [2018-07-23 15:35:21,320 INFO L414 AbstractCegarLoop]: === Iteration 178 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1570841889, now seen corresponding path program 175 times [2018-07-23 15:35:21,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:21,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:21,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-23 15:35:21,549 INFO L450 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-23 15:35:21,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-23 15:35:21,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:35:21,550 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 62 states. [2018-07-23 15:35:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:22,026 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2018-07-23 15:35:22,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-23 15:35:22,027 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 123 [2018-07-23 15:35:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:22,027 INFO L225 Difference]: With dead ends: 188 [2018-07-23 15:35:22,027 INFO L226 Difference]: Without dead ends: 185 [2018-07-23 15:35:22,028 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:35:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-23 15:35:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 126. [2018-07-23 15:35:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-23 15:35:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2018-07-23 15:35:22,113 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 123 [2018-07-23 15:35:22,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:22,113 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2018-07-23 15:35:22,113 INFO L472 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-23 15:35:22,114 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2018-07-23 15:35:22,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-23 15:35:22,114 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:22,114 INFO L353 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1, 1, 1] [2018-07-23 15:35:22,114 INFO L414 AbstractCegarLoop]: === Iteration 179 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:22,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1451396781, now seen corresponding path program 176 times [2018-07-23 15:35:22,114 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1830 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:22,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:22,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-23 15:35:22,256 INFO L450 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-23 15:35:22,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-23 15:35:22,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:35:22,257 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 63 states. [2018-07-23 15:35:22,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:22,496 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2018-07-23 15:35:22,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-23 15:35:22,496 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-23 15:35:22,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:22,497 INFO L225 Difference]: With dead ends: 189 [2018-07-23 15:35:22,497 INFO L226 Difference]: Without dead ends: 125 [2018-07-23 15:35:22,497 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:35:22,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-23 15:35:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-23 15:35:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-23 15:35:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-23 15:35:22,570 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 124 [2018-07-23 15:35:22,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:22,570 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-23 15:35:22,570 INFO L472 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-23 15:35:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-23 15:35:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-23 15:35:22,571 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:22,571 INFO L353 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1, 1, 1] [2018-07-23 15:35:22,571 INFO L414 AbstractCegarLoop]: === Iteration 180 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:22,571 INFO L82 PathProgramCache]: Analyzing trace with hash 320208199, now seen corresponding path program 177 times [2018-07-23 15:35:22,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1830 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:22,724 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:22,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-23 15:35:22,724 INFO L450 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-23 15:35:22,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-23 15:35:22,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:35:22,724 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 63 states. [2018-07-23 15:35:22,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:22,811 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-07-23 15:35:22,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-23 15:35:22,811 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-23 15:35:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:22,811 INFO L225 Difference]: With dead ends: 129 [2018-07-23 15:35:22,811 INFO L226 Difference]: Without dead ends: 126 [2018-07-23 15:35:22,812 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:35:22,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-23 15:35:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-23 15:35:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-23 15:35:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2018-07-23 15:35:22,880 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 124 [2018-07-23 15:35:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:22,880 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2018-07-23 15:35:22,880 INFO L472 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-23 15:35:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2018-07-23 15:35:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-23 15:35:22,880 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:22,881 INFO L353 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1] [2018-07-23 15:35:22,881 INFO L414 AbstractCegarLoop]: === Iteration 181 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:22,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1336458055, now seen corresponding path program 178 times [2018-07-23 15:35:22,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:23,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:23,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-23 15:35:23,091 INFO L450 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-23 15:35:23,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-23 15:35:23,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:35:23,092 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 63 states. [2018-07-23 15:35:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:23,591 INFO L93 Difference]: Finished difference Result 191 states and 193 transitions. [2018-07-23 15:35:23,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-23 15:35:23,591 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 125 [2018-07-23 15:35:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:23,591 INFO L225 Difference]: With dead ends: 191 [2018-07-23 15:35:23,591 INFO L226 Difference]: Without dead ends: 188 [2018-07-23 15:35:23,592 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:35:23,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-23 15:35:23,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 128. [2018-07-23 15:35:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-23 15:35:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2018-07-23 15:35:23,664 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 125 [2018-07-23 15:35:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:23,665 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2018-07-23 15:35:23,665 INFO L472 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-23 15:35:23,665 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2018-07-23 15:35:23,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-23 15:35:23,665 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:23,666 INFO L353 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1, 1, 1] [2018-07-23 15:35:23,666 INFO L414 AbstractCegarLoop]: === Iteration 182 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:23,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1519534777, now seen corresponding path program 179 times [2018-07-23 15:35:23,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:23,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1891 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:23,808 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:23,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-23 15:35:23,809 INFO L450 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-23 15:35:23,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-23 15:35:23,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:35:23,809 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 64 states. [2018-07-23 15:35:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:24,063 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2018-07-23 15:35:24,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-23 15:35:24,064 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-23 15:35:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:24,064 INFO L225 Difference]: With dead ends: 192 [2018-07-23 15:35:24,064 INFO L226 Difference]: Without dead ends: 127 [2018-07-23 15:35:24,064 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:35:24,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-23 15:35:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-23 15:35:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-23 15:35:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-23 15:35:24,134 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 126 [2018-07-23 15:35:24,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:24,134 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-23 15:35:24,134 INFO L472 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-23 15:35:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-23 15:35:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-23 15:35:24,135 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:24,135 INFO L353 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1, 1, 1] [2018-07-23 15:35:24,135 INFO L414 AbstractCegarLoop]: === Iteration 183 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:24,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2068324845, now seen corresponding path program 180 times [2018-07-23 15:35:24,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1891 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:24,293 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:24,293 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-23 15:35:24,293 INFO L450 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-23 15:35:24,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-23 15:35:24,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:35:24,294 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 64 states. [2018-07-23 15:35:24,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:24,432 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2018-07-23 15:35:24,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-23 15:35:24,432 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-23 15:35:24,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:24,433 INFO L225 Difference]: With dead ends: 131 [2018-07-23 15:35:24,433 INFO L226 Difference]: Without dead ends: 128 [2018-07-23 15:35:24,433 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:35:24,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-23 15:35:24,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-23 15:35:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-23 15:35:24,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2018-07-23 15:35:24,513 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 126 [2018-07-23 15:35:24,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:24,513 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2018-07-23 15:35:24,513 INFO L472 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-23 15:35:24,513 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2018-07-23 15:35:24,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-23 15:35:24,513 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:24,514 INFO L353 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1] [2018-07-23 15:35:24,514 INFO L414 AbstractCegarLoop]: === Iteration 184 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:24,514 INFO L82 PathProgramCache]: Analyzing trace with hash -306500767, now seen corresponding path program 181 times [2018-07-23 15:35:24,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:24,744 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:24,744 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-23 15:35:24,744 INFO L450 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-23 15:35:24,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-23 15:35:24,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:35:24,745 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 64 states. [2018-07-23 15:35:25,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:25,287 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2018-07-23 15:35:25,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-23 15:35:25,287 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 127 [2018-07-23 15:35:25,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:25,288 INFO L225 Difference]: With dead ends: 194 [2018-07-23 15:35:25,288 INFO L226 Difference]: Without dead ends: 191 [2018-07-23 15:35:25,288 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:35:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-23 15:35:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 130. [2018-07-23 15:35:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-23 15:35:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2018-07-23 15:35:25,387 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 127 [2018-07-23 15:35:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:25,387 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2018-07-23 15:35:25,388 INFO L472 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-23 15:35:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2018-07-23 15:35:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-23 15:35:25,388 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:25,388 INFO L353 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1, 1, 1] [2018-07-23 15:35:25,388 INFO L414 AbstractCegarLoop]: === Iteration 185 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:25,389 INFO L82 PathProgramCache]: Analyzing trace with hash -911650707, now seen corresponding path program 182 times [2018-07-23 15:35:25,389 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 1953 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:25,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:25,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-23 15:35:25,558 INFO L450 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-23 15:35:25,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-23 15:35:25,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:35:25,559 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 65 states. [2018-07-23 15:35:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:25,822 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions. [2018-07-23 15:35:25,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-23 15:35:25,822 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-23 15:35:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:25,823 INFO L225 Difference]: With dead ends: 195 [2018-07-23 15:35:25,823 INFO L226 Difference]: Without dead ends: 129 [2018-07-23 15:35:25,823 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:35:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-23 15:35:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-23 15:35:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-23 15:35:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-23 15:35:25,905 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 128 [2018-07-23 15:35:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:25,906 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-23 15:35:25,906 INFO L472 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-23 15:35:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-23 15:35:25,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-23 15:35:25,906 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:25,906 INFO L353 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1, 1, 1] [2018-07-23 15:35:25,906 INFO L414 AbstractCegarLoop]: === Iteration 186 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:25,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1357152121, now seen corresponding path program 183 times [2018-07-23 15:35:25,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 1953 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:26,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:26,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-23 15:35:26,054 INFO L450 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-23 15:35:26,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-23 15:35:26,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:35:26,054 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 65 states. [2018-07-23 15:35:26,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:26,161 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-07-23 15:35:26,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-23 15:35:26,161 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-23 15:35:26,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:26,162 INFO L225 Difference]: With dead ends: 133 [2018-07-23 15:35:26,162 INFO L226 Difference]: Without dead ends: 130 [2018-07-23 15:35:26,162 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:35:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-23 15:35:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-23 15:35:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-23 15:35:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2018-07-23 15:35:26,243 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 128 [2018-07-23 15:35:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:26,243 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2018-07-23 15:35:26,243 INFO L472 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-23 15:35:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2018-07-23 15:35:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-23 15:35:26,244 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:26,244 INFO L353 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1] [2018-07-23 15:35:26,244 INFO L414 AbstractCegarLoop]: === Iteration 187 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:26,244 INFO L82 PathProgramCache]: Analyzing trace with hash 877895687, now seen corresponding path program 184 times [2018-07-23 15:35:26,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:26,503 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:26,503 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-23 15:35:26,503 INFO L450 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-23 15:35:26,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-23 15:35:26,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:35:26,503 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 65 states. [2018-07-23 15:35:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:27,086 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2018-07-23 15:35:27,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-23 15:35:27,086 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 129 [2018-07-23 15:35:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:27,087 INFO L225 Difference]: With dead ends: 197 [2018-07-23 15:35:27,087 INFO L226 Difference]: Without dead ends: 194 [2018-07-23 15:35:27,087 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:35:27,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-23 15:35:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 132. [2018-07-23 15:35:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-23 15:35:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2018-07-23 15:35:27,173 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 129 [2018-07-23 15:35:27,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:27,173 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2018-07-23 15:35:27,173 INFO L472 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-23 15:35:27,173 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2018-07-23 15:35:27,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 15:35:27,174 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:27,174 INFO L353 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1, 1, 1] [2018-07-23 15:35:27,174 INFO L414 AbstractCegarLoop]: === Iteration 188 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:27,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1444900999, now seen corresponding path program 185 times [2018-07-23 15:35:27,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 2016 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:27,356 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:27,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-23 15:35:27,356 INFO L450 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-23 15:35:27,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-23 15:35:27,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:35:27,357 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand 66 states. [2018-07-23 15:35:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:27,595 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2018-07-23 15:35:27,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-23 15:35:27,595 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-23 15:35:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:27,595 INFO L225 Difference]: With dead ends: 198 [2018-07-23 15:35:27,595 INFO L226 Difference]: Without dead ends: 131 [2018-07-23 15:35:27,596 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:35:27,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-23 15:35:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-23 15:35:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-23 15:35:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-23 15:35:27,678 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 130 [2018-07-23 15:35:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:27,678 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-23 15:35:27,678 INFO L472 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-23 15:35:27,678 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-23 15:35:27,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 15:35:27,679 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:27,679 INFO L353 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1, 1, 1] [2018-07-23 15:35:27,679 INFO L414 AbstractCegarLoop]: === Iteration 189 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:27,679 INFO L82 PathProgramCache]: Analyzing trace with hash 519259053, now seen corresponding path program 186 times [2018-07-23 15:35:27,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 2016 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:27,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:27,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-23 15:35:27,922 INFO L450 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-23 15:35:27,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-23 15:35:27,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:35:27,923 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 66 states. [2018-07-23 15:35:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:28,031 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2018-07-23 15:35:28,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-23 15:35:28,031 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-23 15:35:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:28,032 INFO L225 Difference]: With dead ends: 135 [2018-07-23 15:35:28,032 INFO L226 Difference]: Without dead ends: 132 [2018-07-23 15:35:28,032 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:35:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-23 15:35:28,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-23 15:35:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-23 15:35:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2018-07-23 15:35:28,115 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 130 [2018-07-23 15:35:28,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:28,116 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2018-07-23 15:35:28,116 INFO L472 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-23 15:35:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2018-07-23 15:35:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-23 15:35:28,116 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:28,116 INFO L353 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1] [2018-07-23 15:35:28,116 INFO L414 AbstractCegarLoop]: === Iteration 190 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:28,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1082900063, now seen corresponding path program 187 times [2018-07-23 15:35:28,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:28,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:28,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-23 15:35:28,388 INFO L450 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-23 15:35:28,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-23 15:35:28,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:35:28,388 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand 66 states. [2018-07-23 15:35:28,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:28,966 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2018-07-23 15:35:28,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-23 15:35:28,967 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 131 [2018-07-23 15:35:28,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:28,967 INFO L225 Difference]: With dead ends: 200 [2018-07-23 15:35:28,967 INFO L226 Difference]: Without dead ends: 197 [2018-07-23 15:35:28,968 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:35:28,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-23 15:35:29,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 134. [2018-07-23 15:35:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-23 15:35:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2018-07-23 15:35:29,056 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 131 [2018-07-23 15:35:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:29,056 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2018-07-23 15:35:29,057 INFO L472 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-23 15:35:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2018-07-23 15:35:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-23 15:35:29,057 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:29,057 INFO L353 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1] [2018-07-23 15:35:29,058 INFO L414 AbstractCegarLoop]: === Iteration 191 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:29,058 INFO L82 PathProgramCache]: Analyzing trace with hash 789774893, now seen corresponding path program 188 times [2018-07-23 15:35:29,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 2080 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:29,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:29,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-23 15:35:29,251 INFO L450 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-23 15:35:29,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-23 15:35:29,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:35:29,252 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand 67 states. [2018-07-23 15:35:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:29,493 INFO L93 Difference]: Finished difference Result 201 states and 203 transitions. [2018-07-23 15:35:29,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-23 15:35:29,493 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-23 15:35:29,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:29,494 INFO L225 Difference]: With dead ends: 201 [2018-07-23 15:35:29,494 INFO L226 Difference]: Without dead ends: 133 [2018-07-23 15:35:29,494 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:35:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-23 15:35:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-23 15:35:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-23 15:35:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-23 15:35:29,579 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 132 [2018-07-23 15:35:29,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:29,579 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-23 15:35:29,579 INFO L472 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-23 15:35:29,579 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-23 15:35:29,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-23 15:35:29,580 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:29,580 INFO L353 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1] [2018-07-23 15:35:29,580 INFO L414 AbstractCegarLoop]: === Iteration 192 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:29,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2135321657, now seen corresponding path program 189 times [2018-07-23 15:35:29,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 2080 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:29,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:29,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-23 15:35:29,757 INFO L450 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-23 15:35:29,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-23 15:35:29,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:35:29,758 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 67 states. [2018-07-23 15:35:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:29,862 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2018-07-23 15:35:29,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-23 15:35:29,862 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-23 15:35:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:29,862 INFO L225 Difference]: With dead ends: 137 [2018-07-23 15:35:29,862 INFO L226 Difference]: Without dead ends: 134 [2018-07-23 15:35:29,863 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:35:29,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-23 15:35:29,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-23 15:35:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-23 15:35:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2018-07-23 15:35:29,946 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 132 [2018-07-23 15:35:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:29,946 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2018-07-23 15:35:29,947 INFO L472 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-23 15:35:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2018-07-23 15:35:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-23 15:35:29,947 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:29,947 INFO L353 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1] [2018-07-23 15:35:29,948 INFO L414 AbstractCegarLoop]: === Iteration 193 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:29,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1770523449, now seen corresponding path program 190 times [2018-07-23 15:35:29,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:30,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:30,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-23 15:35:30,208 INFO L450 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-23 15:35:30,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-23 15:35:30,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:35:30,209 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 67 states. [2018-07-23 15:35:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:30,830 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2018-07-23 15:35:30,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-23 15:35:30,830 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 133 [2018-07-23 15:35:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:30,830 INFO L225 Difference]: With dead ends: 203 [2018-07-23 15:35:30,830 INFO L226 Difference]: Without dead ends: 200 [2018-07-23 15:35:30,831 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:35:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-23 15:35:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 136. [2018-07-23 15:35:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-23 15:35:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2018-07-23 15:35:30,917 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 133 [2018-07-23 15:35:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:30,917 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2018-07-23 15:35:30,917 INFO L472 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-23 15:35:30,917 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2018-07-23 15:35:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-23 15:35:30,918 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:30,918 INFO L353 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1, 1, 1] [2018-07-23 15:35:30,918 INFO L414 AbstractCegarLoop]: === Iteration 194 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:30,918 INFO L82 PathProgramCache]: Analyzing trace with hash 948286407, now seen corresponding path program 191 times [2018-07-23 15:35:30,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 2145 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:31,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:31,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-23 15:35:31,089 INFO L450 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-23 15:35:31,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-23 15:35:31,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:35:31,090 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 68 states. [2018-07-23 15:35:31,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:31,290 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2018-07-23 15:35:31,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-23 15:35:31,290 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-23 15:35:31,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:31,291 INFO L225 Difference]: With dead ends: 204 [2018-07-23 15:35:31,291 INFO L226 Difference]: Without dead ends: 135 [2018-07-23 15:35:31,291 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:35:31,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-23 15:35:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-23 15:35:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-23 15:35:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-23 15:35:31,370 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 134 [2018-07-23 15:35:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:31,370 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-23 15:35:31,370 INFO L472 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-23 15:35:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-23 15:35:31,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-23 15:35:31,370 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:31,370 INFO L353 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1, 1, 1] [2018-07-23 15:35:31,370 INFO L414 AbstractCegarLoop]: === Iteration 195 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:31,371 INFO L82 PathProgramCache]: Analyzing trace with hash 464606573, now seen corresponding path program 192 times [2018-07-23 15:35:31,371 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 2145 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:31,556 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:31,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-23 15:35:31,556 INFO L450 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-23 15:35:31,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-23 15:35:31,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:35:31,557 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 68 states. [2018-07-23 15:35:31,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:31,668 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2018-07-23 15:35:31,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-23 15:35:31,668 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-23 15:35:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:31,669 INFO L225 Difference]: With dead ends: 139 [2018-07-23 15:35:31,669 INFO L226 Difference]: Without dead ends: 136 [2018-07-23 15:35:31,669 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:35:31,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-23 15:35:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-23 15:35:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-23 15:35:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2018-07-23 15:35:31,750 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2018-07-23 15:35:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:31,750 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2018-07-23 15:35:31,750 INFO L472 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-23 15:35:31,750 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2018-07-23 15:35:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-23 15:35:31,751 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:31,751 INFO L353 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1] [2018-07-23 15:35:31,751 INFO L414 AbstractCegarLoop]: === Iteration 196 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1517840353, now seen corresponding path program 193 times [2018-07-23 15:35:31,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:32,006 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:32,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-23 15:35:32,006 INFO L450 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-23 15:35:32,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-23 15:35:32,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:35:32,007 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 68 states. [2018-07-23 15:35:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:32,595 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2018-07-23 15:35:32,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-23 15:35:32,595 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 135 [2018-07-23 15:35:32,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:32,595 INFO L225 Difference]: With dead ends: 206 [2018-07-23 15:35:32,596 INFO L226 Difference]: Without dead ends: 203 [2018-07-23 15:35:32,596 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:35:32,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-23 15:35:32,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 138. [2018-07-23 15:35:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-23 15:35:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2018-07-23 15:35:32,680 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 135 [2018-07-23 15:35:32,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:32,680 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2018-07-23 15:35:32,680 INFO L472 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-23 15:35:32,680 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2018-07-23 15:35:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 15:35:32,681 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:32,681 INFO L353 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1, 1, 1] [2018-07-23 15:35:32,681 INFO L414 AbstractCegarLoop]: === Iteration 197 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:32,681 INFO L82 PathProgramCache]: Analyzing trace with hash -191650835, now seen corresponding path program 194 times [2018-07-23 15:35:32,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 2211 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:32,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:32,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-23 15:35:32,834 INFO L450 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-23 15:35:32,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-23 15:35:32,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:35:32,834 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 69 states. [2018-07-23 15:35:33,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:33,085 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2018-07-23 15:35:33,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-23 15:35:33,085 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-23 15:35:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:33,085 INFO L225 Difference]: With dead ends: 207 [2018-07-23 15:35:33,086 INFO L226 Difference]: Without dead ends: 137 [2018-07-23 15:35:33,086 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:35:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-23 15:35:33,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-23 15:35:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-23 15:35:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-23 15:35:33,176 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 136 [2018-07-23 15:35:33,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:33,177 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-23 15:35:33,177 INFO L472 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-23 15:35:33,177 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-23 15:35:33,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 15:35:33,177 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:33,177 INFO L353 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1, 1, 1] [2018-07-23 15:35:33,177 INFO L414 AbstractCegarLoop]: === Iteration 198 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:33,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1994143495, now seen corresponding path program 195 times [2018-07-23 15:35:33,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 2211 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:33,370 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:33,370 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-23 15:35:33,371 INFO L450 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-23 15:35:33,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-23 15:35:33,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:35:33,372 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 69 states. [2018-07-23 15:35:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:33,540 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-07-23 15:35:33,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-23 15:35:33,540 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-23 15:35:33,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:33,540 INFO L225 Difference]: With dead ends: 141 [2018-07-23 15:35:33,540 INFO L226 Difference]: Without dead ends: 138 [2018-07-23 15:35:33,541 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:35:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-23 15:35:33,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-23 15:35:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-23 15:35:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2018-07-23 15:35:33,635 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 136 [2018-07-23 15:35:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:33,635 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2018-07-23 15:35:33,635 INFO L472 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-23 15:35:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2018-07-23 15:35:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-23 15:35:33,636 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:33,636 INFO L353 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1] [2018-07-23 15:35:33,636 INFO L414 AbstractCegarLoop]: === Iteration 199 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:33,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1688844679, now seen corresponding path program 196 times [2018-07-23 15:35:33,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:33,941 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:33,941 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-23 15:35:33,941 INFO L450 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-23 15:35:33,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-23 15:35:33,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:35:33,942 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 69 states. [2018-07-23 15:35:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:34,601 INFO L93 Difference]: Finished difference Result 209 states and 211 transitions. [2018-07-23 15:35:34,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-23 15:35:34,602 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 137 [2018-07-23 15:35:34,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:34,602 INFO L225 Difference]: With dead ends: 209 [2018-07-23 15:35:34,602 INFO L226 Difference]: Without dead ends: 206 [2018-07-23 15:35:34,603 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:35:34,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-23 15:35:34,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 140. [2018-07-23 15:35:34,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-23 15:35:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2018-07-23 15:35:34,704 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 137 [2018-07-23 15:35:34,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:34,704 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2018-07-23 15:35:34,704 INFO L472 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-23 15:35:34,704 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2018-07-23 15:35:34,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-23 15:35:34,704 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:34,704 INFO L353 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1, 1, 1] [2018-07-23 15:35:34,705 INFO L414 AbstractCegarLoop]: === Iteration 200 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:34,705 INFO L82 PathProgramCache]: Analyzing trace with hash 814515975, now seen corresponding path program 197 times [2018-07-23 15:35:34,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 2278 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:34,905 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:34,905 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-23 15:35:34,906 INFO L450 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-23 15:35:34,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-23 15:35:34,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:35:34,907 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 70 states. [2018-07-23 15:35:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:35,237 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2018-07-23 15:35:35,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-23 15:35:35,237 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-23 15:35:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:35,237 INFO L225 Difference]: With dead ends: 210 [2018-07-23 15:35:35,237 INFO L226 Difference]: Without dead ends: 139 [2018-07-23 15:35:35,238 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:35:35,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-23 15:35:35,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-23 15:35:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-23 15:35:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-23 15:35:35,333 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 138 [2018-07-23 15:35:35,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:35,333 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-23 15:35:35,333 INFO L472 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-23 15:35:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-23 15:35:35,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-23 15:35:35,334 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:35,334 INFO L353 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1, 1, 1] [2018-07-23 15:35:35,334 INFO L414 AbstractCegarLoop]: === Iteration 201 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:35,334 INFO L82 PathProgramCache]: Analyzing trace with hash -145336531, now seen corresponding path program 198 times [2018-07-23 15:35:35,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 2278 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:35,576 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:35,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-23 15:35:35,577 INFO L450 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-23 15:35:35,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-23 15:35:35,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:35:35,577 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 70 states. [2018-07-23 15:35:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:35,701 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2018-07-23 15:35:35,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-23 15:35:35,701 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-23 15:35:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:35,701 INFO L225 Difference]: With dead ends: 143 [2018-07-23 15:35:35,701 INFO L226 Difference]: Without dead ends: 140 [2018-07-23 15:35:35,702 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:35:35,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-23 15:35:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-23 15:35:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-23 15:35:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2018-07-23 15:35:35,785 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 138 [2018-07-23 15:35:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:35,786 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2018-07-23 15:35:35,786 INFO L472 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-23 15:35:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2018-07-23 15:35:35,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-23 15:35:35,786 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:35,786 INFO L353 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1] [2018-07-23 15:35:35,786 INFO L414 AbstractCegarLoop]: === Iteration 202 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:35,786 INFO L82 PathProgramCache]: Analyzing trace with hash -210526687, now seen corresponding path program 199 times [2018-07-23 15:35:35,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:36,055 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:36,055 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-23 15:35:36,055 INFO L450 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-23 15:35:36,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-23 15:35:36,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:35:36,055 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand 70 states. [2018-07-23 15:35:36,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:36,733 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2018-07-23 15:35:36,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-23 15:35:36,733 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 139 [2018-07-23 15:35:36,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:36,733 INFO L225 Difference]: With dead ends: 212 [2018-07-23 15:35:36,733 INFO L226 Difference]: Without dead ends: 209 [2018-07-23 15:35:36,734 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:35:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-23 15:35:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 142. [2018-07-23 15:35:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-23 15:35:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2018-07-23 15:35:36,829 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 139 [2018-07-23 15:35:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:36,830 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2018-07-23 15:35:36,830 INFO L472 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-23 15:35:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2018-07-23 15:35:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-23 15:35:36,830 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:36,830 INFO L353 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1, 1, 1] [2018-07-23 15:35:36,830 INFO L414 AbstractCegarLoop]: === Iteration 203 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:36,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2063545773, now seen corresponding path program 200 times [2018-07-23 15:35:36,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 2346 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:36,993 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:36,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-23 15:35:36,993 INFO L450 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-23 15:35:36,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-23 15:35:36,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:35:36,994 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 71 states. [2018-07-23 15:35:37,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:37,255 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2018-07-23 15:35:37,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-23 15:35:37,255 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-23 15:35:37,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:37,255 INFO L225 Difference]: With dead ends: 213 [2018-07-23 15:35:37,255 INFO L226 Difference]: Without dead ends: 141 [2018-07-23 15:35:37,256 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:35:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-23 15:35:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-23 15:35:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-23 15:35:37,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-23 15:35:37,343 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 140 [2018-07-23 15:35:37,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:37,343 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-23 15:35:37,343 INFO L472 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-23 15:35:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-23 15:35:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-23 15:35:37,344 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:37,344 INFO L353 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1, 1, 1] [2018-07-23 15:35:37,344 INFO L414 AbstractCegarLoop]: === Iteration 204 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:37,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1922078137, now seen corresponding path program 201 times [2018-07-23 15:35:37,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 2346 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:37,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:37,524 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-23 15:35:37,524 INFO L450 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-23 15:35:37,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-23 15:35:37,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:35:37,524 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 71 states. [2018-07-23 15:35:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:37,639 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-07-23 15:35:37,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-23 15:35:37,639 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-23 15:35:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:37,639 INFO L225 Difference]: With dead ends: 145 [2018-07-23 15:35:37,639 INFO L226 Difference]: Without dead ends: 142 [2018-07-23 15:35:37,640 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:35:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-23 15:35:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-23 15:35:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-23 15:35:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2018-07-23 15:35:37,728 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 140 [2018-07-23 15:35:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:37,729 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2018-07-23 15:35:37,729 INFO L472 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-23 15:35:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2018-07-23 15:35:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-23 15:35:37,729 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:37,729 INFO L353 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1] [2018-07-23 15:35:37,729 INFO L414 AbstractCegarLoop]: === Iteration 205 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:37,729 INFO L82 PathProgramCache]: Analyzing trace with hash 545058375, now seen corresponding path program 202 times [2018-07-23 15:35:37,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:37,995 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:37,996 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-23 15:35:37,996 INFO L450 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-23 15:35:37,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-23 15:35:37,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:35:37,996 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 71 states. [2018-07-23 15:35:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:38,647 INFO L93 Difference]: Finished difference Result 215 states and 217 transitions. [2018-07-23 15:35:38,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-23 15:35:38,647 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 141 [2018-07-23 15:35:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:38,648 INFO L225 Difference]: With dead ends: 215 [2018-07-23 15:35:38,648 INFO L226 Difference]: Without dead ends: 212 [2018-07-23 15:35:38,649 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:35:38,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-23 15:35:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2018-07-23 15:35:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-23 15:35:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 146 transitions. [2018-07-23 15:35:38,813 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 146 transitions. Word has length 141 [2018-07-23 15:35:38,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:38,813 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 146 transitions. [2018-07-23 15:35:38,813 INFO L472 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-23 15:35:38,813 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 146 transitions. [2018-07-23 15:35:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-23 15:35:38,813 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:38,813 INFO L353 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1, 1, 1] [2018-07-23 15:35:38,813 INFO L414 AbstractCegarLoop]: === Iteration 206 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:38,814 INFO L82 PathProgramCache]: Analyzing trace with hash -283121081, now seen corresponding path program 203 times [2018-07-23 15:35:38,814 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 2415 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:38,997 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:38,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-23 15:35:38,997 INFO L450 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-23 15:35:38,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-23 15:35:38,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:35:38,998 INFO L87 Difference]: Start difference. First operand 144 states and 146 transitions. Second operand 72 states. [2018-07-23 15:35:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:39,295 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2018-07-23 15:35:39,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-23 15:35:39,295 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-23 15:35:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:39,296 INFO L225 Difference]: With dead ends: 216 [2018-07-23 15:35:39,296 INFO L226 Difference]: Without dead ends: 143 [2018-07-23 15:35:39,296 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:35:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-23 15:35:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-23 15:35:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-23 15:35:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-23 15:35:39,404 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 142 [2018-07-23 15:35:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:39,404 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-23 15:35:39,404 INFO L472 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-23 15:35:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-23 15:35:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-23 15:35:39,404 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:39,404 INFO L353 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1, 1, 1] [2018-07-23 15:35:39,404 INFO L414 AbstractCegarLoop]: === Iteration 207 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:39,405 INFO L82 PathProgramCache]: Analyzing trace with hash 716589293, now seen corresponding path program 204 times [2018-07-23 15:35:39,405 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 2415 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:39,614 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:39,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-23 15:35:39,615 INFO L450 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-23 15:35:39,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-23 15:35:39,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:35:39,615 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 72 states. [2018-07-23 15:35:39,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:39,767 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2018-07-23 15:35:39,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-23 15:35:39,768 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-23 15:35:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:39,768 INFO L225 Difference]: With dead ends: 147 [2018-07-23 15:35:39,768 INFO L226 Difference]: Without dead ends: 144 [2018-07-23 15:35:39,768 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:35:39,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-23 15:35:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-23 15:35:39,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-23 15:35:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2018-07-23 15:35:39,867 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 142 [2018-07-23 15:35:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:39,868 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2018-07-23 15:35:39,868 INFO L472 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-23 15:35:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2018-07-23 15:35:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-23 15:35:39,868 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:39,868 INFO L353 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1] [2018-07-23 15:35:39,868 INFO L414 AbstractCegarLoop]: === Iteration 208 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash 739370081, now seen corresponding path program 205 times [2018-07-23 15:35:39,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:40,188 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:40,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-23 15:35:40,189 INFO L450 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-23 15:35:40,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-23 15:35:40,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:35:40,189 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 72 states. [2018-07-23 15:35:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:40,884 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2018-07-23 15:35:40,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-23 15:35:40,884 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 143 [2018-07-23 15:35:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:40,884 INFO L225 Difference]: With dead ends: 218 [2018-07-23 15:35:40,884 INFO L226 Difference]: Without dead ends: 215 [2018-07-23 15:35:40,885 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:35:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-23 15:35:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 146. [2018-07-23 15:35:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-23 15:35:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2018-07-23 15:35:40,981 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 143 [2018-07-23 15:35:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:40,982 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2018-07-23 15:35:40,982 INFO L472 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-23 15:35:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2018-07-23 15:35:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 15:35:40,982 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:40,982 INFO L353 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1, 1, 1] [2018-07-23 15:35:40,982 INFO L414 AbstractCegarLoop]: === Iteration 209 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:40,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1445574509, now seen corresponding path program 206 times [2018-07-23 15:35:40,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2485 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:41,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:41,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-23 15:35:41,157 INFO L450 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-23 15:35:41,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-23 15:35:41,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:35:41,158 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 73 states. [2018-07-23 15:35:41,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:41,440 INFO L93 Difference]: Finished difference Result 219 states and 221 transitions. [2018-07-23 15:35:41,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-23 15:35:41,440 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-23 15:35:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:41,440 INFO L225 Difference]: With dead ends: 219 [2018-07-23 15:35:41,441 INFO L226 Difference]: Without dead ends: 145 [2018-07-23 15:35:41,441 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:35:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-23 15:35:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-23 15:35:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-23 15:35:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-23 15:35:41,542 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 144 [2018-07-23 15:35:41,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:41,542 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-23 15:35:41,543 INFO L472 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-23 15:35:41,543 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-23 15:35:41,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 15:35:41,543 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:41,543 INFO L353 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1, 1, 1] [2018-07-23 15:35:41,543 INFO L414 AbstractCegarLoop]: === Iteration 210 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1923142265, now seen corresponding path program 207 times [2018-07-23 15:35:41,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2485 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:41,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:41,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-23 15:35:41,760 INFO L450 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-23 15:35:41,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-23 15:35:41,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:35:41,761 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 73 states. [2018-07-23 15:35:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:41,909 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-07-23 15:35:41,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-23 15:35:41,909 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-23 15:35:41,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:41,909 INFO L225 Difference]: With dead ends: 149 [2018-07-23 15:35:41,910 INFO L226 Difference]: Without dead ends: 146 [2018-07-23 15:35:41,910 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:35:41,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-23 15:35:42,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-23 15:35:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-23 15:35:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2018-07-23 15:35:42,013 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 144 [2018-07-23 15:35:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:42,013 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2018-07-23 15:35:42,013 INFO L472 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-23 15:35:42,013 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2018-07-23 15:35:42,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-23 15:35:42,013 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:42,014 INFO L353 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1] [2018-07-23 15:35:42,014 INFO L414 AbstractCegarLoop]: === Iteration 211 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:42,014 INFO L82 PathProgramCache]: Analyzing trace with hash 512070407, now seen corresponding path program 208 times [2018-07-23 15:35:42,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:42,350 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:42,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-23 15:35:42,351 INFO L450 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-23 15:35:42,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-23 15:35:42,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:35:42,351 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 73 states. [2018-07-23 15:35:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:43,120 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2018-07-23 15:35:43,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-23 15:35:43,121 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 145 [2018-07-23 15:35:43,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:43,121 INFO L225 Difference]: With dead ends: 221 [2018-07-23 15:35:43,121 INFO L226 Difference]: Without dead ends: 218 [2018-07-23 15:35:43,121 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:35:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-23 15:35:43,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 148. [2018-07-23 15:35:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-23 15:35:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2018-07-23 15:35:43,218 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 145 [2018-07-23 15:35:43,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:43,218 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2018-07-23 15:35:43,218 INFO L472 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-23 15:35:43,218 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2018-07-23 15:35:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-23 15:35:43,218 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:43,218 INFO L353 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1, 1, 1] [2018-07-23 15:35:43,218 INFO L414 AbstractCegarLoop]: === Iteration 212 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:43,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1305748089, now seen corresponding path program 209 times [2018-07-23 15:35:43,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 2556 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:43,425 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:43,425 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-23 15:35:43,425 INFO L450 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-23 15:35:43,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-23 15:35:43,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:35:43,426 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 74 states. [2018-07-23 15:35:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:43,693 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2018-07-23 15:35:43,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-23 15:35:43,693 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-23 15:35:43,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:43,694 INFO L225 Difference]: With dead ends: 222 [2018-07-23 15:35:43,694 INFO L226 Difference]: Without dead ends: 147 [2018-07-23 15:35:43,694 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:35:43,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-23 15:35:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-23 15:35:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-23 15:35:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-23 15:35:43,799 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 146 [2018-07-23 15:35:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:43,799 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-23 15:35:43,799 INFO L472 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-23 15:35:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-23 15:35:43,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-23 15:35:43,800 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:43,800 INFO L353 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1, 1, 1] [2018-07-23 15:35:43,800 INFO L414 AbstractCegarLoop]: === Iteration 213 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:43,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1638214317, now seen corresponding path program 210 times [2018-07-23 15:35:43,800 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 2556 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:44,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:44,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-23 15:35:44,022 INFO L450 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-23 15:35:44,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-23 15:35:44,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:35:44,023 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 74 states. [2018-07-23 15:35:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:44,162 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2018-07-23 15:35:44,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-23 15:35:44,162 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-23 15:35:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:44,162 INFO L225 Difference]: With dead ends: 151 [2018-07-23 15:35:44,162 INFO L226 Difference]: Without dead ends: 148 [2018-07-23 15:35:44,163 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:35:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-23 15:35:44,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-23 15:35:44,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-23 15:35:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2018-07-23 15:35:44,273 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 146 [2018-07-23 15:35:44,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:44,273 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2018-07-23 15:35:44,273 INFO L472 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-23 15:35:44,273 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2018-07-23 15:35:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-23 15:35:44,274 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:44,274 INFO L353 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1] [2018-07-23 15:35:44,274 INFO L414 AbstractCegarLoop]: === Iteration 214 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:44,274 INFO L82 PathProgramCache]: Analyzing trace with hash -755025247, now seen corresponding path program 211 times [2018-07-23 15:35:44,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:44,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:44,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:44,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-23 15:35:44,606 INFO L450 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-23 15:35:44,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-23 15:35:44,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:35:44,606 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 74 states. [2018-07-23 15:35:45,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:45,367 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2018-07-23 15:35:45,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-23 15:35:45,367 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 147 [2018-07-23 15:35:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:45,367 INFO L225 Difference]: With dead ends: 224 [2018-07-23 15:35:45,368 INFO L226 Difference]: Without dead ends: 221 [2018-07-23 15:35:45,368 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:35:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-23 15:35:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 150. [2018-07-23 15:35:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-23 15:35:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2018-07-23 15:35:45,479 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 147 [2018-07-23 15:35:45,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:45,480 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2018-07-23 15:35:45,480 INFO L472 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-23 15:35:45,480 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2018-07-23 15:35:45,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-23 15:35:45,480 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:45,480 INFO L353 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1, 1, 1] [2018-07-23 15:35:45,480 INFO L414 AbstractCegarLoop]: === Iteration 215 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:45,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1931007699, now seen corresponding path program 212 times [2018-07-23 15:35:45,481 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 2628 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:45,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:45,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-23 15:35:45,701 INFO L450 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-23 15:35:45,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-23 15:35:45,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:35:45,702 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand 75 states. [2018-07-23 15:35:45,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:45,977 INFO L93 Difference]: Finished difference Result 225 states and 227 transitions. [2018-07-23 15:35:45,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-23 15:35:45,977 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-23 15:35:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:45,978 INFO L225 Difference]: With dead ends: 225 [2018-07-23 15:35:45,978 INFO L226 Difference]: Without dead ends: 149 [2018-07-23 15:35:45,978 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:35:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-23 15:35:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-23 15:35:46,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-23 15:35:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-23 15:35:46,120 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 148 [2018-07-23 15:35:46,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:46,121 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-23 15:35:46,121 INFO L472 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-23 15:35:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-23 15:35:46,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-23 15:35:46,121 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:46,121 INFO L353 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1, 1, 1] [2018-07-23 15:35:46,121 INFO L414 AbstractCegarLoop]: === Iteration 216 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:46,121 INFO L82 PathProgramCache]: Analyzing trace with hash -862486329, now seen corresponding path program 213 times [2018-07-23 15:35:46,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 2628 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:46,346 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:46,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-23 15:35:46,346 INFO L450 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-23 15:35:46,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-23 15:35:46,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:35:46,347 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 75 states. [2018-07-23 15:35:46,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:46,490 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-07-23 15:35:46,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-23 15:35:46,490 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-23 15:35:46,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:46,491 INFO L225 Difference]: With dead ends: 153 [2018-07-23 15:35:46,491 INFO L226 Difference]: Without dead ends: 150 [2018-07-23 15:35:46,491 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:35:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-23 15:35:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-23 15:35:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-23 15:35:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2018-07-23 15:35:46,600 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 148 [2018-07-23 15:35:46,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:46,600 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2018-07-23 15:35:46,600 INFO L472 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-23 15:35:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2018-07-23 15:35:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-23 15:35:46,600 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:46,601 INFO L353 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1] [2018-07-23 15:35:46,601 INFO L414 AbstractCegarLoop]: === Iteration 217 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:46,601 INFO L82 PathProgramCache]: Analyzing trace with hash -967333945, now seen corresponding path program 214 times [2018-07-23 15:35:46,601 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:46,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:46,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-23 15:35:46,959 INFO L450 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-23 15:35:46,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-23 15:35:46,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:35:46,959 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 75 states. [2018-07-23 15:35:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:47,704 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2018-07-23 15:35:47,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-23 15:35:47,704 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 149 [2018-07-23 15:35:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:47,705 INFO L225 Difference]: With dead ends: 227 [2018-07-23 15:35:47,705 INFO L226 Difference]: Without dead ends: 224 [2018-07-23 15:35:47,705 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:35:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-23 15:35:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 152. [2018-07-23 15:35:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-23 15:35:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2018-07-23 15:35:47,815 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 149 [2018-07-23 15:35:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:47,815 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions. [2018-07-23 15:35:47,815 INFO L472 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-23 15:35:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions. [2018-07-23 15:35:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-23 15:35:47,815 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:47,815 INFO L353 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1, 1, 1] [2018-07-23 15:35:47,815 INFO L414 AbstractCegarLoop]: === Iteration 218 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:47,816 INFO L82 PathProgramCache]: Analyzing trace with hash 77357255, now seen corresponding path program 215 times [2018-07-23 15:35:47,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 2701 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:48,020 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:48,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-23 15:35:48,020 INFO L450 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-23 15:35:48,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-23 15:35:48,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:35:48,021 INFO L87 Difference]: Start difference. First operand 152 states and 154 transitions. Second operand 76 states. [2018-07-23 15:35:48,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:48,357 INFO L93 Difference]: Finished difference Result 228 states and 230 transitions. [2018-07-23 15:35:48,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-23 15:35:48,357 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-23 15:35:48,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:48,358 INFO L225 Difference]: With dead ends: 228 [2018-07-23 15:35:48,358 INFO L226 Difference]: Without dead ends: 151 [2018-07-23 15:35:48,358 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:35:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-23 15:35:48,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-23 15:35:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-23 15:35:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-23 15:35:48,470 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 150 [2018-07-23 15:35:48,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:48,471 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-23 15:35:48,471 INFO L472 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-23 15:35:48,471 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-23 15:35:48,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-23 15:35:48,471 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:48,471 INFO L353 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1, 1, 1] [2018-07-23 15:35:48,471 INFO L414 AbstractCegarLoop]: === Iteration 219 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:48,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1158218643, now seen corresponding path program 216 times [2018-07-23 15:35:48,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 2701 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:48,777 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:48,777 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-23 15:35:48,777 INFO L450 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-23 15:35:48,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-23 15:35:48,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:35:48,778 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 76 states. [2018-07-23 15:35:49,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:49,027 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2018-07-23 15:35:49,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-23 15:35:49,027 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-23 15:35:49,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:49,028 INFO L225 Difference]: With dead ends: 155 [2018-07-23 15:35:49,028 INFO L226 Difference]: Without dead ends: 152 [2018-07-23 15:35:49,029 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:35:49,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-23 15:35:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-23 15:35:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-23 15:35:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2018-07-23 15:35:49,197 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 150 [2018-07-23 15:35:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:49,197 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2018-07-23 15:35:49,197 INFO L472 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-23 15:35:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2018-07-23 15:35:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-23 15:35:49,198 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:49,198 INFO L353 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1] [2018-07-23 15:35:49,198 INFO L414 AbstractCegarLoop]: === Iteration 220 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:49,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1545101087, now seen corresponding path program 217 times [2018-07-23 15:35:49,199 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:49,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:49,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-23 15:35:49,559 INFO L450 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-23 15:35:49,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-23 15:35:49,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:35:49,559 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand 76 states. [2018-07-23 15:35:50,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:50,354 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2018-07-23 15:35:50,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-23 15:35:50,355 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 151 [2018-07-23 15:35:50,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:50,355 INFO L225 Difference]: With dead ends: 230 [2018-07-23 15:35:50,355 INFO L226 Difference]: Without dead ends: 227 [2018-07-23 15:35:50,356 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:35:50,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-23 15:35:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 154. [2018-07-23 15:35:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-23 15:35:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2018-07-23 15:35:50,464 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 151 [2018-07-23 15:35:50,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:50,465 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions. [2018-07-23 15:35:50,465 INFO L472 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-23 15:35:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions. [2018-07-23 15:35:50,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-23 15:35:50,465 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:50,465 INFO L353 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1, 1, 1] [2018-07-23 15:35:50,465 INFO L414 AbstractCegarLoop]: === Iteration 221 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:50,465 INFO L82 PathProgramCache]: Analyzing trace with hash -653554963, now seen corresponding path program 218 times [2018-07-23 15:35:50,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 2775 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:50,692 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:50,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-23 15:35:50,693 INFO L450 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-23 15:35:50,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-23 15:35:50,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:35:50,693 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand 77 states. [2018-07-23 15:35:51,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:51,050 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2018-07-23 15:35:51,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-23 15:35:51,050 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-23 15:35:51,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:51,050 INFO L225 Difference]: With dead ends: 231 [2018-07-23 15:35:51,050 INFO L226 Difference]: Without dead ends: 153 [2018-07-23 15:35:51,051 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:35:51,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-23 15:35:51,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-23 15:35:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-23 15:35:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-23 15:35:51,150 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 152 [2018-07-23 15:35:51,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:51,151 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-23 15:35:51,151 INFO L472 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-23 15:35:51,151 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-23 15:35:51,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-23 15:35:51,151 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:51,151 INFO L353 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1, 1, 1] [2018-07-23 15:35:51,151 INFO L414 AbstractCegarLoop]: === Iteration 222 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:51,151 INFO L82 PathProgramCache]: Analyzing trace with hash -301702137, now seen corresponding path program 219 times [2018-07-23 15:35:51,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 2775 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:51,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:51,351 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-23 15:35:51,351 INFO L450 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-23 15:35:51,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-23 15:35:51,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:35:51,352 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 77 states. [2018-07-23 15:35:51,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:51,501 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-07-23 15:35:51,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-23 15:35:51,501 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-23 15:35:51,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:51,502 INFO L225 Difference]: With dead ends: 157 [2018-07-23 15:35:51,502 INFO L226 Difference]: Without dead ends: 154 [2018-07-23 15:35:51,502 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:35:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-23 15:35:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-23 15:35:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-23 15:35:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2018-07-23 15:35:51,616 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 152 [2018-07-23 15:35:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:51,616 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2018-07-23 15:35:51,616 INFO L472 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-23 15:35:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2018-07-23 15:35:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-23 15:35:51,616 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:51,617 INFO L353 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1] [2018-07-23 15:35:51,617 INFO L414 AbstractCegarLoop]: === Iteration 223 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:51,617 INFO L82 PathProgramCache]: Analyzing trace with hash -762893177, now seen corresponding path program 220 times [2018-07-23 15:35:51,617 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:51,984 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:51,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-23 15:35:51,984 INFO L450 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-23 15:35:51,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-23 15:35:51,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:35:51,985 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 77 states. [2018-07-23 15:35:52,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:52,788 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2018-07-23 15:35:52,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-23 15:35:52,788 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 153 [2018-07-23 15:35:52,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:52,789 INFO L225 Difference]: With dead ends: 233 [2018-07-23 15:35:52,789 INFO L226 Difference]: Without dead ends: 230 [2018-07-23 15:35:52,789 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:35:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-23 15:35:52,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 156. [2018-07-23 15:35:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-23 15:35:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2018-07-23 15:35:52,899 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 153 [2018-07-23 15:35:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:52,899 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2018-07-23 15:35:52,899 INFO L472 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-23 15:35:52,900 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2018-07-23 15:35:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-23 15:35:52,900 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:52,900 INFO L353 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1, 1, 1] [2018-07-23 15:35:52,900 INFO L414 AbstractCegarLoop]: === Iteration 224 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:52,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2120053767, now seen corresponding path program 221 times [2018-07-23 15:35:52,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2850 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:53,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:53,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-23 15:35:53,102 INFO L450 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-23 15:35:53,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-23 15:35:53,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:35:53,103 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 78 states. [2018-07-23 15:35:53,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:53,416 INFO L93 Difference]: Finished difference Result 234 states and 236 transitions. [2018-07-23 15:35:53,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-23 15:35:53,417 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-23 15:35:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:53,417 INFO L225 Difference]: With dead ends: 234 [2018-07-23 15:35:53,417 INFO L226 Difference]: Without dead ends: 155 [2018-07-23 15:35:53,418 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:35:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-23 15:35:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-23 15:35:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-23 15:35:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-23 15:35:53,590 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 154 [2018-07-23 15:35:53,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:53,590 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-23 15:35:53,591 INFO L472 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-23 15:35:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-23 15:35:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-23 15:35:53,591 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:53,591 INFO L353 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1, 1, 1] [2018-07-23 15:35:53,591 INFO L414 AbstractCegarLoop]: === Iteration 225 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:53,592 INFO L82 PathProgramCache]: Analyzing trace with hash 142589485, now seen corresponding path program 222 times [2018-07-23 15:35:53,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 2850 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:53,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:53,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-23 15:35:53,822 INFO L450 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-23 15:35:53,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-23 15:35:53,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:35:53,824 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 78 states. [2018-07-23 15:35:53,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:53,961 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2018-07-23 15:35:53,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-23 15:35:53,961 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-23 15:35:53,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:53,961 INFO L225 Difference]: With dead ends: 159 [2018-07-23 15:35:53,961 INFO L226 Difference]: Without dead ends: 156 [2018-07-23 15:35:53,962 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:35:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-23 15:35:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-23 15:35:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-23 15:35:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2018-07-23 15:35:54,079 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 154 [2018-07-23 15:35:54,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:54,079 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2018-07-23 15:35:54,079 INFO L472 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-23 15:35:54,079 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2018-07-23 15:35:54,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-23 15:35:54,080 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:54,080 INFO L353 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1] [2018-07-23 15:35:54,080 INFO L414 AbstractCegarLoop]: === Iteration 226 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:54,080 INFO L82 PathProgramCache]: Analyzing trace with hash 125245217, now seen corresponding path program 223 times [2018-07-23 15:35:54,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:54,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:54,454 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-23 15:35:54,454 INFO L450 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-23 15:35:54,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-23 15:35:54,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:35:54,454 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 78 states. [2018-07-23 15:35:55,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:55,321 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2018-07-23 15:35:55,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-23 15:35:55,321 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 155 [2018-07-23 15:35:55,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:55,321 INFO L225 Difference]: With dead ends: 236 [2018-07-23 15:35:55,321 INFO L226 Difference]: Without dead ends: 233 [2018-07-23 15:35:55,322 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:35:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-23 15:35:55,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 158. [2018-07-23 15:35:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-23 15:35:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2018-07-23 15:35:55,444 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 155 [2018-07-23 15:35:55,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:55,445 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2018-07-23 15:35:55,445 INFO L472 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-23 15:35:55,445 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2018-07-23 15:35:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-23 15:35:55,445 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:55,445 INFO L353 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1, 1, 1] [2018-07-23 15:35:55,445 INFO L414 AbstractCegarLoop]: === Iteration 227 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:55,445 INFO L82 PathProgramCache]: Analyzing trace with hash -412427091, now seen corresponding path program 224 times [2018-07-23 15:35:55,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2926 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:55,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:55,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-23 15:35:55,685 INFO L450 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-23 15:35:55,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-23 15:35:55,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:35:55,686 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 79 states. [2018-07-23 15:35:56,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:56,056 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2018-07-23 15:35:56,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-23 15:35:56,056 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-23 15:35:56,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:56,056 INFO L225 Difference]: With dead ends: 237 [2018-07-23 15:35:56,056 INFO L226 Difference]: Without dead ends: 157 [2018-07-23 15:35:56,057 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:35:56,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-23 15:35:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-23 15:35:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-23 15:35:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-23 15:35:56,176 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 156 [2018-07-23 15:35:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:56,176 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-23 15:35:56,176 INFO L472 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-23 15:35:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-23 15:35:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-23 15:35:56,176 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:56,176 INFO L353 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1, 1, 1] [2018-07-23 15:35:56,177 INFO L414 AbstractCegarLoop]: === Iteration 228 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:56,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1584277689, now seen corresponding path program 225 times [2018-07-23 15:35:56,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2926 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:56,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:56,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-23 15:35:56,430 INFO L450 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-23 15:35:56,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-23 15:35:56,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:35:56,431 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 79 states. [2018-07-23 15:35:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:56,572 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2018-07-23 15:35:56,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-23 15:35:56,573 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-23 15:35:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:56,573 INFO L225 Difference]: With dead ends: 161 [2018-07-23 15:35:56,573 INFO L226 Difference]: Without dead ends: 158 [2018-07-23 15:35:56,574 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:35:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-23 15:35:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-23 15:35:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-23 15:35:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2018-07-23 15:35:56,686 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 156 [2018-07-23 15:35:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:56,686 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2018-07-23 15:35:56,686 INFO L472 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-23 15:35:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2018-07-23 15:35:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-23 15:35:56,687 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:56,687 INFO L353 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1] [2018-07-23 15:35:56,687 INFO L414 AbstractCegarLoop]: === Iteration 229 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1868029625, now seen corresponding path program 226 times [2018-07-23 15:35:56,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:57,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:57,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-23 15:35:57,023 INFO L450 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-23 15:35:57,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-23 15:35:57,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:35:57,023 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 79 states. [2018-07-23 15:35:57,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:57,872 INFO L93 Difference]: Finished difference Result 239 states and 241 transitions. [2018-07-23 15:35:57,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-23 15:35:57,872 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 157 [2018-07-23 15:35:57,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:57,873 INFO L225 Difference]: With dead ends: 239 [2018-07-23 15:35:57,873 INFO L226 Difference]: Without dead ends: 236 [2018-07-23 15:35:57,874 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:35:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-23 15:35:57,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 160. [2018-07-23 15:35:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-23 15:35:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 162 transitions. [2018-07-23 15:35:57,993 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 162 transitions. Word has length 157 [2018-07-23 15:35:57,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:57,993 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 162 transitions. [2018-07-23 15:35:57,993 INFO L472 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-23 15:35:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 162 transitions. [2018-07-23 15:35:57,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-23 15:35:57,993 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:57,994 INFO L353 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1, 1, 1] [2018-07-23 15:35:57,994 INFO L414 AbstractCegarLoop]: === Iteration 230 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:57,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2074405049, now seen corresponding path program 227 times [2018-07-23 15:35:57,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 3003 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:58,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:58,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-23 15:35:58,241 INFO L450 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-23 15:35:58,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-23 15:35:58,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:35:58,242 INFO L87 Difference]: Start difference. First operand 160 states and 162 transitions. Second operand 80 states. [2018-07-23 15:35:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:58,602 INFO L93 Difference]: Finished difference Result 240 states and 242 transitions. [2018-07-23 15:35:58,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-23 15:35:58,602 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-23 15:35:58,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:58,602 INFO L225 Difference]: With dead ends: 240 [2018-07-23 15:35:58,603 INFO L226 Difference]: Without dead ends: 159 [2018-07-23 15:35:58,603 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:35:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-23 15:35:58,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-23 15:35:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-23 15:35:58,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-23 15:35:58,726 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 158 [2018-07-23 15:35:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:58,726 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-23 15:35:58,727 INFO L472 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-23 15:35:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-23 15:35:58,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-23 15:35:58,727 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:58,727 INFO L353 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1, 1, 1] [2018-07-23 15:35:58,727 INFO L414 AbstractCegarLoop]: === Iteration 231 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:58,727 INFO L82 PathProgramCache]: Analyzing trace with hash 252932077, now seen corresponding path program 228 times [2018-07-23 15:35:58,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 3003 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:58,997 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:58,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-23 15:35:58,997 INFO L450 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-23 15:35:58,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-23 15:35:58,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:35:58,998 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 80 states. [2018-07-23 15:35:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:59,156 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2018-07-23 15:35:59,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-23 15:35:59,156 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-23 15:35:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:59,156 INFO L225 Difference]: With dead ends: 163 [2018-07-23 15:35:59,156 INFO L226 Difference]: Without dead ends: 160 [2018-07-23 15:35:59,157 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:35:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-23 15:35:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-23 15:35:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-23 15:35:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2018-07-23 15:35:59,280 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 158 [2018-07-23 15:35:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:59,280 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2018-07-23 15:35:59,280 INFO L472 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-23 15:35:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2018-07-23 15:35:59,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-23 15:35:59,280 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:59,280 INFO L353 BasicCegarLoop]: trace histogram [77, 77, 1, 1, 1, 1, 1] [2018-07-23 15:35:59,281 INFO L414 AbstractCegarLoop]: === Iteration 232 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:35:59,281 INFO L82 PathProgramCache]: Analyzing trace with hash -749101727, now seen corresponding path program 229 times [2018-07-23 15:35:59,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:59,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:59,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-23 15:35:59,719 INFO L450 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-23 15:35:59,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-23 15:35:59,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:35:59,720 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand 80 states. [2018-07-23 15:36:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:00,594 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-07-23 15:36:00,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-23 15:36:00,594 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 159 [2018-07-23 15:36:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:00,594 INFO L225 Difference]: With dead ends: 242 [2018-07-23 15:36:00,594 INFO L226 Difference]: Without dead ends: 239 [2018-07-23 15:36:00,595 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:36:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-23 15:36:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 162. [2018-07-23 15:36:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-23 15:36:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2018-07-23 15:36:00,725 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 159 [2018-07-23 15:36:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:00,726 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2018-07-23 15:36:00,726 INFO L472 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-23 15:36:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2018-07-23 15:36:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-23 15:36:00,726 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:00,726 INFO L353 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1, 1, 1] [2018-07-23 15:36:00,726 INFO L414 AbstractCegarLoop]: === Iteration 233 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:00,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1747378579, now seen corresponding path program 230 times [2018-07-23 15:36:00,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 3081 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:00,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:00,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-23 15:36:00,982 INFO L450 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-23 15:36:00,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-23 15:36:00,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:36:00,983 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 81 states. [2018-07-23 15:36:01,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:01,349 INFO L93 Difference]: Finished difference Result 243 states and 245 transitions. [2018-07-23 15:36:01,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-23 15:36:01,350 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-23 15:36:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:01,350 INFO L225 Difference]: With dead ends: 243 [2018-07-23 15:36:01,350 INFO L226 Difference]: Without dead ends: 161 [2018-07-23 15:36:01,351 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:36:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-23 15:36:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-23 15:36:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-23 15:36:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-23 15:36:01,477 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 160 [2018-07-23 15:36:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:01,477 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-23 15:36:01,477 INFO L472 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-23 15:36:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-23 15:36:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-23 15:36:01,478 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:01,478 INFO L353 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1, 1, 1] [2018-07-23 15:36:01,478 INFO L414 AbstractCegarLoop]: === Iteration 234 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:01,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1680595591, now seen corresponding path program 231 times [2018-07-23 15:36:01,478 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 3081 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:01,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:01,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-23 15:36:01,748 INFO L450 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-23 15:36:01,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-23 15:36:01,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:36:01,749 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 81 states. [2018-07-23 15:36:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:01,916 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-07-23 15:36:01,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-23 15:36:01,916 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-23 15:36:01,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:01,916 INFO L225 Difference]: With dead ends: 165 [2018-07-23 15:36:01,916 INFO L226 Difference]: Without dead ends: 162 [2018-07-23 15:36:01,917 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:36:01,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-23 15:36:02,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-23 15:36:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-23 15:36:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2018-07-23 15:36:02,052 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 160 [2018-07-23 15:36:02,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:02,052 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2018-07-23 15:36:02,052 INFO L472 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-23 15:36:02,052 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2018-07-23 15:36:02,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-23 15:36:02,053 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:02,053 INFO L353 BasicCegarLoop]: trace histogram [78, 78, 1, 1, 1, 1, 1] [2018-07-23 15:36:02,053 INFO L414 AbstractCegarLoop]: === Iteration 235 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:02,053 INFO L82 PathProgramCache]: Analyzing trace with hash 558794247, now seen corresponding path program 232 times [2018-07-23 15:36:02,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:02,454 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:02,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-23 15:36:02,455 INFO L450 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-23 15:36:02,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-23 15:36:02,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:36:02,456 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 81 states. [2018-07-23 15:36:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:03,371 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2018-07-23 15:36:03,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-23 15:36:03,371 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 161 [2018-07-23 15:36:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:03,372 INFO L225 Difference]: With dead ends: 245 [2018-07-23 15:36:03,372 INFO L226 Difference]: Without dead ends: 242 [2018-07-23 15:36:03,372 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:36:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-23 15:36:03,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 164. [2018-07-23 15:36:03,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-23 15:36:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2018-07-23 15:36:03,504 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 161 [2018-07-23 15:36:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:03,505 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2018-07-23 15:36:03,505 INFO L472 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-23 15:36:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2018-07-23 15:36:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 15:36:03,505 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:03,505 INFO L353 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1, 1, 1] [2018-07-23 15:36:03,505 INFO L414 AbstractCegarLoop]: === Iteration 236 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:03,506 INFO L82 PathProgramCache]: Analyzing trace with hash 142690951, now seen corresponding path program 233 times [2018-07-23 15:36:03,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 3160 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:03,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:03,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-23 15:36:03,765 INFO L450 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-23 15:36:03,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-23 15:36:03,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:36:03,765 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 82 states. [2018-07-23 15:36:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:04,103 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2018-07-23 15:36:04,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-23 15:36:04,103 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-23 15:36:04,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:04,104 INFO L225 Difference]: With dead ends: 246 [2018-07-23 15:36:04,104 INFO L226 Difference]: Without dead ends: 163 [2018-07-23 15:36:04,104 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:36:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-23 15:36:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-23 15:36:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-23 15:36:04,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-23 15:36:04,232 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 162 [2018-07-23 15:36:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:04,233 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-23 15:36:04,233 INFO L472 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-23 15:36:04,233 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-23 15:36:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 15:36:04,233 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:04,233 INFO L353 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1, 1, 1] [2018-07-23 15:36:04,233 INFO L414 AbstractCegarLoop]: === Iteration 237 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:04,234 INFO L82 PathProgramCache]: Analyzing trace with hash -964292179, now seen corresponding path program 234 times [2018-07-23 15:36:04,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 3160 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:04,507 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:04,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-23 15:36:04,508 INFO L450 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-23 15:36:04,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-23 15:36:04,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:36:04,508 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 82 states. [2018-07-23 15:36:04,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:04,696 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2018-07-23 15:36:04,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-23 15:36:04,696 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-23 15:36:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:04,697 INFO L225 Difference]: With dead ends: 167 [2018-07-23 15:36:04,697 INFO L226 Difference]: Without dead ends: 164 [2018-07-23 15:36:04,697 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:36:04,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-23 15:36:04,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-23 15:36:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-23 15:36:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2018-07-23 15:36:04,827 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 162 [2018-07-23 15:36:04,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:04,827 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2018-07-23 15:36:04,827 INFO L472 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-23 15:36:04,827 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2018-07-23 15:36:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-23 15:36:04,827 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:04,827 INFO L353 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1] [2018-07-23 15:36:04,827 INFO L414 AbstractCegarLoop]: === Iteration 238 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:04,828 INFO L82 PathProgramCache]: Analyzing trace with hash 171652001, now seen corresponding path program 235 times [2018-07-23 15:36:04,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:05,203 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:05,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-23 15:36:05,204 INFO L450 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-23 15:36:05,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-23 15:36:05,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:36:05,204 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand 82 states. [2018-07-23 15:36:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:06,122 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2018-07-23 15:36:06,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-23 15:36:06,122 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 163 [2018-07-23 15:36:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:06,123 INFO L225 Difference]: With dead ends: 248 [2018-07-23 15:36:06,123 INFO L226 Difference]: Without dead ends: 245 [2018-07-23 15:36:06,123 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:36:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-23 15:36:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 166. [2018-07-23 15:36:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-23 15:36:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2018-07-23 15:36:06,246 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 163 [2018-07-23 15:36:06,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:06,246 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2018-07-23 15:36:06,246 INFO L472 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-23 15:36:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2018-07-23 15:36:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-23 15:36:06,247 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:06,247 INFO L353 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1, 1, 1] [2018-07-23 15:36:06,247 INFO L414 AbstractCegarLoop]: === Iteration 239 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:06,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1026183213, now seen corresponding path program 236 times [2018-07-23 15:36:06,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 3240 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:06,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:06,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-23 15:36:06,478 INFO L450 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-23 15:36:06,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-23 15:36:06,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:36:06,479 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 83 states. [2018-07-23 15:36:06,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:06,839 INFO L93 Difference]: Finished difference Result 249 states and 251 transitions. [2018-07-23 15:36:06,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-23 15:36:06,839 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-23 15:36:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:06,839 INFO L225 Difference]: With dead ends: 249 [2018-07-23 15:36:06,839 INFO L226 Difference]: Without dead ends: 165 [2018-07-23 15:36:06,840 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:36:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-23 15:36:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-23 15:36:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-23 15:36:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-23 15:36:06,970 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 164 [2018-07-23 15:36:06,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:06,971 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-23 15:36:06,971 INFO L472 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-23 15:36:06,971 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-23 15:36:06,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-23 15:36:06,971 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:06,971 INFO L353 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1, 1, 1] [2018-07-23 15:36:06,971 INFO L414 AbstractCegarLoop]: === Iteration 240 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:06,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1069444551, now seen corresponding path program 237 times [2018-07-23 15:36:06,972 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 3240 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:07,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:07,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-23 15:36:07,250 INFO L450 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-23 15:36:07,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-23 15:36:07,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:36:07,251 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 83 states. [2018-07-23 15:36:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:07,440 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-07-23 15:36:07,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-23 15:36:07,440 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-23 15:36:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:07,440 INFO L225 Difference]: With dead ends: 169 [2018-07-23 15:36:07,440 INFO L226 Difference]: Without dead ends: 166 [2018-07-23 15:36:07,441 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:36:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-23 15:36:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-23 15:36:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-23 15:36:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2018-07-23 15:36:07,573 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 164 [2018-07-23 15:36:07,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:07,573 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2018-07-23 15:36:07,573 INFO L472 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-23 15:36:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2018-07-23 15:36:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-23 15:36:07,573 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:07,573 INFO L353 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1] [2018-07-23 15:36:07,574 INFO L414 AbstractCegarLoop]: === Iteration 241 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:07,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1207018809, now seen corresponding path program 238 times [2018-07-23 15:36:07,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:07,975 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:07,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-23 15:36:07,975 INFO L450 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-23 15:36:07,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-23 15:36:07,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:36:07,976 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 83 states. [2018-07-23 15:36:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:08,928 INFO L93 Difference]: Finished difference Result 251 states and 253 transitions. [2018-07-23 15:36:08,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-23 15:36:08,928 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 165 [2018-07-23 15:36:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:08,929 INFO L225 Difference]: With dead ends: 251 [2018-07-23 15:36:08,929 INFO L226 Difference]: Without dead ends: 248 [2018-07-23 15:36:08,929 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:36:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-23 15:36:09,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 168. [2018-07-23 15:36:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-23 15:36:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2018-07-23 15:36:09,148 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 165 [2018-07-23 15:36:09,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:09,148 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2018-07-23 15:36:09,148 INFO L472 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-23 15:36:09,148 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2018-07-23 15:36:09,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-23 15:36:09,149 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:09,149 INFO L353 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1, 1, 1] [2018-07-23 15:36:09,149 INFO L414 AbstractCegarLoop]: === Iteration 242 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:09,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1237061063, now seen corresponding path program 239 times [2018-07-23 15:36:09,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3321 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:09,437 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:09,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-23 15:36:09,437 INFO L450 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-23 15:36:09,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-23 15:36:09,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:36:09,438 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand 84 states. [2018-07-23 15:36:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:09,802 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2018-07-23 15:36:09,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-23 15:36:09,802 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-23 15:36:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:09,803 INFO L225 Difference]: With dead ends: 252 [2018-07-23 15:36:09,803 INFO L226 Difference]: Without dead ends: 167 [2018-07-23 15:36:09,803 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:36:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-23 15:36:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-23 15:36:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-23 15:36:09,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-23 15:36:09,939 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 166 [2018-07-23 15:36:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:09,939 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-23 15:36:09,939 INFO L472 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-23 15:36:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-23 15:36:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-23 15:36:09,940 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:09,940 INFO L353 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1, 1, 1] [2018-07-23 15:36:09,940 INFO L414 AbstractCegarLoop]: === Iteration 243 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1716804755, now seen corresponding path program 240 times [2018-07-23 15:36:09,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3321 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:10,225 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:10,226 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-23 15:36:10,226 INFO L450 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-23 15:36:10,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-23 15:36:10,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:36:10,227 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 84 states. [2018-07-23 15:36:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:10,406 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2018-07-23 15:36:10,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-23 15:36:10,406 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-23 15:36:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:10,407 INFO L225 Difference]: With dead ends: 171 [2018-07-23 15:36:10,407 INFO L226 Difference]: Without dead ends: 168 [2018-07-23 15:36:10,407 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:36:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-23 15:36:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-23 15:36:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-23 15:36:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2018-07-23 15:36:10,536 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 166 [2018-07-23 15:36:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:10,536 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2018-07-23 15:36:10,536 INFO L472 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-23 15:36:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2018-07-23 15:36:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-23 15:36:10,536 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:10,536 INFO L353 BasicCegarLoop]: trace histogram [81, 81, 1, 1, 1, 1, 1] [2018-07-23 15:36:10,537 INFO L414 AbstractCegarLoop]: === Iteration 244 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1681401375, now seen corresponding path program 241 times [2018-07-23 15:36:10,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:10,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:10,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-23 15:36:10,961 INFO L450 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-23 15:36:10,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-23 15:36:10,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:36:10,961 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand 84 states. [2018-07-23 15:36:11,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:11,930 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2018-07-23 15:36:11,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-23 15:36:11,930 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 167 [2018-07-23 15:36:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:11,931 INFO L225 Difference]: With dead ends: 254 [2018-07-23 15:36:11,931 INFO L226 Difference]: Without dead ends: 251 [2018-07-23 15:36:11,931 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:36:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-23 15:36:12,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 170. [2018-07-23 15:36:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-23 15:36:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 172 transitions. [2018-07-23 15:36:12,061 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 172 transitions. Word has length 167 [2018-07-23 15:36:12,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:12,061 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 172 transitions. [2018-07-23 15:36:12,061 INFO L472 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-23 15:36:12,061 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 172 transitions. [2018-07-23 15:36:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-23 15:36:12,062 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:12,062 INFO L353 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1, 1, 1] [2018-07-23 15:36:12,062 INFO L414 AbstractCegarLoop]: === Iteration 245 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:12,062 INFO L82 PathProgramCache]: Analyzing trace with hash -583896595, now seen corresponding path program 242 times [2018-07-23 15:36:12,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 3403 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:12,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:12,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-23 15:36:12,299 INFO L450 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-23 15:36:12,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-23 15:36:12,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:36:12,300 INFO L87 Difference]: Start difference. First operand 170 states and 172 transitions. Second operand 85 states. [2018-07-23 15:36:12,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:12,682 INFO L93 Difference]: Finished difference Result 255 states and 257 transitions. [2018-07-23 15:36:12,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-23 15:36:12,682 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-23 15:36:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:12,682 INFO L225 Difference]: With dead ends: 255 [2018-07-23 15:36:12,682 INFO L226 Difference]: Without dead ends: 169 [2018-07-23 15:36:12,683 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:36:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-23 15:36:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-23 15:36:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-23 15:36:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-23 15:36:12,806 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 168 [2018-07-23 15:36:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:12,806 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-23 15:36:12,806 INFO L472 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-23 15:36:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-23 15:36:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-23 15:36:12,806 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:12,806 INFO L353 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1, 1, 1] [2018-07-23 15:36:12,806 INFO L414 AbstractCegarLoop]: === Iteration 246 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:12,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1959423737, now seen corresponding path program 243 times [2018-07-23 15:36:12,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 3403 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:13,055 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:13,055 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-23 15:36:13,055 INFO L450 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-23 15:36:13,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-23 15:36:13,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:36:13,056 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 85 states. [2018-07-23 15:36:13,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:13,229 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2018-07-23 15:36:13,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-23 15:36:13,230 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-23 15:36:13,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:13,230 INFO L225 Difference]: With dead ends: 173 [2018-07-23 15:36:13,230 INFO L226 Difference]: Without dead ends: 170 [2018-07-23 15:36:13,230 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:36:13,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-23 15:36:13,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-23 15:36:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-23 15:36:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2018-07-23 15:36:13,355 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 168 [2018-07-23 15:36:13,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:13,355 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2018-07-23 15:36:13,355 INFO L472 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-23 15:36:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2018-07-23 15:36:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-23 15:36:13,355 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:13,355 INFO L353 BasicCegarLoop]: trace histogram [82, 82, 1, 1, 1, 1, 1] [2018-07-23 15:36:13,355 INFO L414 AbstractCegarLoop]: === Iteration 247 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:13,356 INFO L82 PathProgramCache]: Analyzing trace with hash -612655225, now seen corresponding path program 244 times [2018-07-23 15:36:13,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:13,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:13,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:13,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-23 15:36:13,735 INFO L450 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-23 15:36:13,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-23 15:36:13,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:36:13,735 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 85 states. [2018-07-23 15:36:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:14,662 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2018-07-23 15:36:14,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-23 15:36:14,663 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 169 [2018-07-23 15:36:14,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:14,663 INFO L225 Difference]: With dead ends: 257 [2018-07-23 15:36:14,663 INFO L226 Difference]: Without dead ends: 254 [2018-07-23 15:36:14,663 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:36:14,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-23 15:36:14,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 172. [2018-07-23 15:36:14,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-23 15:36:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2018-07-23 15:36:14,798 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 169 [2018-07-23 15:36:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:14,798 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2018-07-23 15:36:14,798 INFO L472 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-23 15:36:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2018-07-23 15:36:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-23 15:36:14,799 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:14,799 INFO L353 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1, 1, 1] [2018-07-23 15:36:14,799 INFO L414 AbstractCegarLoop]: === Iteration 248 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:14,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1812504313, now seen corresponding path program 245 times [2018-07-23 15:36:14,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 3486 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:15,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:15,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-23 15:36:15,041 INFO L450 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-23 15:36:15,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-23 15:36:15,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:36:15,042 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand 86 states. [2018-07-23 15:36:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:15,401 INFO L93 Difference]: Finished difference Result 258 states and 260 transitions. [2018-07-23 15:36:15,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-23 15:36:15,401 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-23 15:36:15,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:15,401 INFO L225 Difference]: With dead ends: 258 [2018-07-23 15:36:15,401 INFO L226 Difference]: Without dead ends: 171 [2018-07-23 15:36:15,402 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:36:15,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-23 15:36:15,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-23 15:36:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-23 15:36:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-23 15:36:15,532 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 170 [2018-07-23 15:36:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:15,532 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-23 15:36:15,532 INFO L472 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-23 15:36:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-23 15:36:15,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-23 15:36:15,533 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:15,533 INFO L353 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1, 1, 1] [2018-07-23 15:36:15,533 INFO L414 AbstractCegarLoop]: === Iteration 249 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:15,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1504172755, now seen corresponding path program 246 times [2018-07-23 15:36:15,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 3486 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:15,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:15,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-23 15:36:15,806 INFO L450 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-23 15:36:15,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-23 15:36:15,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:36:15,807 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 86 states. [2018-07-23 15:36:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:15,967 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2018-07-23 15:36:15,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-23 15:36:15,967 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-23 15:36:15,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:15,968 INFO L225 Difference]: With dead ends: 175 [2018-07-23 15:36:15,968 INFO L226 Difference]: Without dead ends: 172 [2018-07-23 15:36:15,968 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:36:15,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-23 15:36:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-23 15:36:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-23 15:36:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2018-07-23 15:36:16,095 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 170 [2018-07-23 15:36:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:16,095 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2018-07-23 15:36:16,095 INFO L472 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-23 15:36:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2018-07-23 15:36:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-23 15:36:16,096 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:16,096 INFO L353 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1] [2018-07-23 15:36:16,096 INFO L414 AbstractCegarLoop]: === Iteration 250 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:16,096 INFO L82 PathProgramCache]: Analyzing trace with hash 615223329, now seen corresponding path program 247 times [2018-07-23 15:36:16,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:16,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:16,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-23 15:36:16,500 INFO L450 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-23 15:36:16,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-23 15:36:16,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:36:16,501 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand 86 states. [2018-07-23 15:36:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:17,500 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2018-07-23 15:36:17,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-23 15:36:17,501 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 171 [2018-07-23 15:36:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:17,501 INFO L225 Difference]: With dead ends: 260 [2018-07-23 15:36:17,501 INFO L226 Difference]: Without dead ends: 257 [2018-07-23 15:36:17,502 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:36:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-23 15:36:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 174. [2018-07-23 15:36:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-23 15:36:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 176 transitions. [2018-07-23 15:36:17,738 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 176 transitions. Word has length 171 [2018-07-23 15:36:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:17,738 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 176 transitions. [2018-07-23 15:36:17,738 INFO L472 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-23 15:36:17,738 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 176 transitions. [2018-07-23 15:36:17,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-23 15:36:17,739 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:17,739 INFO L353 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1, 1, 1] [2018-07-23 15:36:17,739 INFO L414 AbstractCegarLoop]: === Iteration 251 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:17,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1891992493, now seen corresponding path program 248 times [2018-07-23 15:36:17,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 3570 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:18,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:18,015 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-23 15:36:18,015 INFO L450 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-23 15:36:18,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-23 15:36:18,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:36:18,016 INFO L87 Difference]: Start difference. First operand 174 states and 176 transitions. Second operand 87 states. [2018-07-23 15:36:18,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:18,436 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2018-07-23 15:36:18,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-23 15:36:18,436 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-23 15:36:18,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:18,437 INFO L225 Difference]: With dead ends: 261 [2018-07-23 15:36:18,437 INFO L226 Difference]: Without dead ends: 173 [2018-07-23 15:36:18,437 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:36:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-23 15:36:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-23 15:36:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-23 15:36:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-23 15:36:18,581 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 172 [2018-07-23 15:36:18,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:18,581 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-23 15:36:18,581 INFO L472 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-23 15:36:18,582 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-23 15:36:18,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-23 15:36:18,582 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:18,582 INFO L353 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1, 1, 1] [2018-07-23 15:36:18,582 INFO L414 AbstractCegarLoop]: === Iteration 252 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:18,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1434631097, now seen corresponding path program 249 times [2018-07-23 15:36:18,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 3570 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:18,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:18,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-23 15:36:18,882 INFO L450 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-23 15:36:18,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-23 15:36:18,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:36:18,883 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 87 states. [2018-07-23 15:36:19,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:19,054 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-07-23 15:36:19,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-23 15:36:19,054 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-23 15:36:19,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:19,054 INFO L225 Difference]: With dead ends: 177 [2018-07-23 15:36:19,055 INFO L226 Difference]: Without dead ends: 174 [2018-07-23 15:36:19,055 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:36:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-23 15:36:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-23 15:36:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-23 15:36:19,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2018-07-23 15:36:19,185 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 172 [2018-07-23 15:36:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:19,185 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2018-07-23 15:36:19,185 INFO L472 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-23 15:36:19,185 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2018-07-23 15:36:19,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-23 15:36:19,186 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:19,186 INFO L353 BasicCegarLoop]: trace histogram [84, 84, 1, 1, 1, 1, 1] [2018-07-23 15:36:19,186 INFO L414 AbstractCegarLoop]: === Iteration 253 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:19,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1523952569, now seen corresponding path program 250 times [2018-07-23 15:36:19,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:19,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:19,587 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-23 15:36:19,588 INFO L450 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-23 15:36:19,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-23 15:36:19,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:36:19,588 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 87 states. [2018-07-23 15:36:20,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:20,616 INFO L93 Difference]: Finished difference Result 263 states and 265 transitions. [2018-07-23 15:36:20,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-23 15:36:20,617 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 173 [2018-07-23 15:36:20,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:20,617 INFO L225 Difference]: With dead ends: 263 [2018-07-23 15:36:20,617 INFO L226 Difference]: Without dead ends: 260 [2018-07-23 15:36:20,618 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:36:20,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-23 15:36:20,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 176. [2018-07-23 15:36:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-23 15:36:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions. [2018-07-23 15:36:20,771 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 173 [2018-07-23 15:36:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:20,772 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions. [2018-07-23 15:36:20,772 INFO L472 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-23 15:36:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions. [2018-07-23 15:36:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-23 15:36:20,772 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:20,772 INFO L353 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1, 1, 1] [2018-07-23 15:36:20,772 INFO L414 AbstractCegarLoop]: === Iteration 254 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:20,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2049095, now seen corresponding path program 251 times [2018-07-23 15:36:20,773 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:21,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 3655 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:21,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:21,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-23 15:36:21,059 INFO L450 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-23 15:36:21,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-23 15:36:21,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:36:21,060 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand 88 states. [2018-07-23 15:36:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:21,470 INFO L93 Difference]: Finished difference Result 264 states and 266 transitions. [2018-07-23 15:36:21,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-23 15:36:21,470 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-23 15:36:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:21,471 INFO L225 Difference]: With dead ends: 264 [2018-07-23 15:36:21,471 INFO L226 Difference]: Without dead ends: 175 [2018-07-23 15:36:21,471 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:36:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-23 15:36:21,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-23 15:36:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-23 15:36:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-23 15:36:21,609 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 174 [2018-07-23 15:36:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:21,609 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-23 15:36:21,609 INFO L472 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-23 15:36:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-23 15:36:21,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-23 15:36:21,610 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:21,610 INFO L353 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1, 1, 1] [2018-07-23 15:36:21,610 INFO L414 AbstractCegarLoop]: === Iteration 255 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:21,610 INFO L82 PathProgramCache]: Analyzing trace with hash -44067091, now seen corresponding path program 252 times [2018-07-23 15:36:21,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 3655 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:21,950 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:21,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-23 15:36:21,951 INFO L450 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-23 15:36:21,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-23 15:36:21,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:36:21,951 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 88 states. [2018-07-23 15:36:22,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:22,177 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2018-07-23 15:36:22,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-23 15:36:22,177 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-23 15:36:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:22,178 INFO L225 Difference]: With dead ends: 179 [2018-07-23 15:36:22,178 INFO L226 Difference]: Without dead ends: 176 [2018-07-23 15:36:22,178 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:36:22,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-23 15:36:22,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-23 15:36:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-23 15:36:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2018-07-23 15:36:22,327 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 174 [2018-07-23 15:36:22,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:22,327 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2018-07-23 15:36:22,328 INFO L472 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-23 15:36:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2018-07-23 15:36:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-23 15:36:22,328 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:22,328 INFO L353 BasicCegarLoop]: trace histogram [85, 85, 1, 1, 1, 1, 1] [2018-07-23 15:36:22,329 INFO L414 AbstractCegarLoop]: === Iteration 256 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:22,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1366141343, now seen corresponding path program 253 times [2018-07-23 15:36:22,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:22,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:22,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-23 15:36:22,806 INFO L450 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-23 15:36:22,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-23 15:36:22,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:36:22,807 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand 88 states. [2018-07-23 15:36:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:23,853 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2018-07-23 15:36:23,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-23 15:36:23,853 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 175 [2018-07-23 15:36:23,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:23,854 INFO L225 Difference]: With dead ends: 266 [2018-07-23 15:36:23,854 INFO L226 Difference]: Without dead ends: 263 [2018-07-23 15:36:23,855 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:36:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-23 15:36:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 178. [2018-07-23 15:36:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-23 15:36:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2018-07-23 15:36:24,001 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 175 [2018-07-23 15:36:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:24,001 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2018-07-23 15:36:24,001 INFO L472 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-23 15:36:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2018-07-23 15:36:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-23 15:36:24,002 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:24,002 INFO L353 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1, 1, 1] [2018-07-23 15:36:24,002 INFO L414 AbstractCegarLoop]: === Iteration 257 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash 599229805, now seen corresponding path program 254 times [2018-07-23 15:36:24,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 3741 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:24,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:24,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-23 15:36:24,308 INFO L450 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-23 15:36:24,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-23 15:36:24,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:36:24,310 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 89 states. [2018-07-23 15:36:24,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:24,739 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2018-07-23 15:36:24,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-23 15:36:24,739 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-23 15:36:24,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:24,739 INFO L225 Difference]: With dead ends: 267 [2018-07-23 15:36:24,739 INFO L226 Difference]: Without dead ends: 177 [2018-07-23 15:36:24,740 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:36:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-23 15:36:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-23 15:36:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-23 15:36:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-23 15:36:24,884 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 176 [2018-07-23 15:36:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:24,885 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-23 15:36:24,885 INFO L472 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-23 15:36:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-23 15:36:24,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-23 15:36:24,885 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:24,886 INFO L353 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1, 1, 1] [2018-07-23 15:36:24,886 INFO L414 AbstractCegarLoop]: === Iteration 258 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:24,886 INFO L82 PathProgramCache]: Analyzing trace with hash -830371961, now seen corresponding path program 255 times [2018-07-23 15:36:24,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 3741 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:25,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:25,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-23 15:36:25,228 INFO L450 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-23 15:36:25,228 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-23 15:36:25,229 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:36:25,229 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 89 states. [2018-07-23 15:36:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:25,403 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-07-23 15:36:25,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-23 15:36:25,403 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-23 15:36:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:25,403 INFO L225 Difference]: With dead ends: 181 [2018-07-23 15:36:25,404 INFO L226 Difference]: Without dead ends: 178 [2018-07-23 15:36:25,404 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:36:25,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-23 15:36:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-23 15:36:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-23 15:36:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2018-07-23 15:36:25,649 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 176 [2018-07-23 15:36:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:25,649 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2018-07-23 15:36:25,650 INFO L472 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-23 15:36:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2018-07-23 15:36:25,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-23 15:36:25,650 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:25,650 INFO L353 BasicCegarLoop]: trace histogram [86, 86, 1, 1, 1, 1, 1] [2018-07-23 15:36:25,651 INFO L414 AbstractCegarLoop]: === Iteration 259 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:25,651 INFO L82 PathProgramCache]: Analyzing trace with hash 28211463, now seen corresponding path program 256 times [2018-07-23 15:36:25,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:26,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:26,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-23 15:36:26,174 INFO L450 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-23 15:36:26,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-23 15:36:26,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:36:26,174 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 89 states. [2018-07-23 15:36:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:27,249 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2018-07-23 15:36:27,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-23 15:36:27,249 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 177 [2018-07-23 15:36:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:27,250 INFO L225 Difference]: With dead ends: 269 [2018-07-23 15:36:27,250 INFO L226 Difference]: Without dead ends: 266 [2018-07-23 15:36:27,251 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:36:27,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-23 15:36:27,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 180. [2018-07-23 15:36:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-23 15:36:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2018-07-23 15:36:27,413 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 177 [2018-07-23 15:36:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:27,413 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2018-07-23 15:36:27,413 INFO L472 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-23 15:36:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2018-07-23 15:36:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-23 15:36:27,414 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:27,414 INFO L353 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1, 1, 1] [2018-07-23 15:36:27,414 INFO L414 AbstractCegarLoop]: === Iteration 260 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:27,414 INFO L82 PathProgramCache]: Analyzing trace with hash 874493831, now seen corresponding path program 257 times [2018-07-23 15:36:27,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3828 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:27,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:27,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-23 15:36:27,738 INFO L450 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-23 15:36:27,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-23 15:36:27,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:36:27,739 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand 90 states. [2018-07-23 15:36:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:28,247 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2018-07-23 15:36:28,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-23 15:36:28,247 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-23 15:36:28,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:28,248 INFO L225 Difference]: With dead ends: 270 [2018-07-23 15:36:28,248 INFO L226 Difference]: Without dead ends: 179 [2018-07-23 15:36:28,248 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:36:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-23 15:36:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-23 15:36:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-23 15:36:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-23 15:36:28,406 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 178 [2018-07-23 15:36:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:28,406 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-23 15:36:28,406 INFO L472 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-23 15:36:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-23 15:36:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-23 15:36:28,407 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:28,407 INFO L353 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1, 1, 1] [2018-07-23 15:36:28,407 INFO L414 AbstractCegarLoop]: === Iteration 261 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:28,407 INFO L82 PathProgramCache]: Analyzing trace with hash -493487955, now seen corresponding path program 258 times [2018-07-23 15:36:28,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3828 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:28,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:28,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-23 15:36:28,747 INFO L450 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-23 15:36:28,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-23 15:36:28,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:36:28,748 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 90 states. [2018-07-23 15:36:28,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:28,964 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2018-07-23 15:36:28,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-23 15:36:28,964 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-23 15:36:28,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:28,965 INFO L225 Difference]: With dead ends: 183 [2018-07-23 15:36:28,965 INFO L226 Difference]: Without dead ends: 180 [2018-07-23 15:36:28,965 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:36:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-23 15:36:29,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-23 15:36:29,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-23 15:36:29,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2018-07-23 15:36:29,124 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 178 [2018-07-23 15:36:29,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:29,124 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2018-07-23 15:36:29,124 INFO L472 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-23 15:36:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2018-07-23 15:36:29,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-23 15:36:29,124 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:29,125 INFO L353 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1] [2018-07-23 15:36:29,125 INFO L414 AbstractCegarLoop]: === Iteration 262 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:29,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1881681057, now seen corresponding path program 259 times [2018-07-23 15:36:29,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:29,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:29,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-23 15:36:29,619 INFO L450 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-23 15:36:29,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-23 15:36:29,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:36:29,619 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand 90 states. [2018-07-23 15:36:30,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:30,762 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2018-07-23 15:36:30,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-23 15:36:30,762 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 179 [2018-07-23 15:36:30,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:30,762 INFO L225 Difference]: With dead ends: 272 [2018-07-23 15:36:30,762 INFO L226 Difference]: Without dead ends: 269 [2018-07-23 15:36:30,763 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:36:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-23 15:36:30,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 182. [2018-07-23 15:36:30,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-23 15:36:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2018-07-23 15:36:30,923 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 179 [2018-07-23 15:36:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:30,923 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 184 transitions. [2018-07-23 15:36:30,923 INFO L472 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-23 15:36:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 184 transitions. [2018-07-23 15:36:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-23 15:36:30,924 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:30,924 INFO L353 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1, 1, 1] [2018-07-23 15:36:30,924 INFO L414 AbstractCegarLoop]: === Iteration 263 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:30,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1797490899, now seen corresponding path program 260 times [2018-07-23 15:36:30,924 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 3916 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:31,225 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:31,225 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-23 15:36:31,225 INFO L450 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-23 15:36:31,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-23 15:36:31,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:36:31,226 INFO L87 Difference]: Start difference. First operand 182 states and 184 transitions. Second operand 91 states. [2018-07-23 15:36:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:31,714 INFO L93 Difference]: Finished difference Result 273 states and 275 transitions. [2018-07-23 15:36:31,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-23 15:36:31,714 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-23 15:36:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:31,714 INFO L225 Difference]: With dead ends: 273 [2018-07-23 15:36:31,714 INFO L226 Difference]: Without dead ends: 181 [2018-07-23 15:36:31,715 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:36:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-23 15:36:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-23 15:36:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-23 15:36:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-23 15:36:31,875 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 180 [2018-07-23 15:36:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:31,876 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-23 15:36:31,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-23 15:36:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-23 15:36:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-23 15:36:31,876 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:31,876 INFO L353 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1, 1, 1] [2018-07-23 15:36:31,876 INFO L414 AbstractCegarLoop]: === Iteration 264 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:31,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1255253305, now seen corresponding path program 261 times [2018-07-23 15:36:31,877 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 3916 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:32,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:32,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-23 15:36:32,228 INFO L450 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-23 15:36:32,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-23 15:36:32,229 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:36:32,229 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 91 states. [2018-07-23 15:36:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:32,438 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2018-07-23 15:36:32,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-23 15:36:32,438 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-23 15:36:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:32,438 INFO L225 Difference]: With dead ends: 185 [2018-07-23 15:36:32,438 INFO L226 Difference]: Without dead ends: 182 [2018-07-23 15:36:32,439 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:36:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-23 15:36:32,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-23 15:36:32,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-23 15:36:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2018-07-23 15:36:32,601 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 180 [2018-07-23 15:36:32,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:32,601 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2018-07-23 15:36:32,601 INFO L472 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-23 15:36:32,601 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2018-07-23 15:36:32,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-23 15:36:32,602 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:32,602 INFO L353 BasicCegarLoop]: trace histogram [88, 88, 1, 1, 1, 1, 1] [2018-07-23 15:36:32,602 INFO L414 AbstractCegarLoop]: === Iteration 265 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:32,602 INFO L82 PathProgramCache]: Analyzing trace with hash -258208313, now seen corresponding path program 262 times [2018-07-23 15:36:32,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:33,115 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:33,115 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-23 15:36:33,115 INFO L450 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-23 15:36:33,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-23 15:36:33,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:36:33,116 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 91 states. [2018-07-23 15:36:34,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:34,284 INFO L93 Difference]: Finished difference Result 275 states and 277 transitions. [2018-07-23 15:36:34,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-23 15:36:34,285 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 181 [2018-07-23 15:36:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:34,285 INFO L225 Difference]: With dead ends: 275 [2018-07-23 15:36:34,285 INFO L226 Difference]: Without dead ends: 272 [2018-07-23 15:36:34,285 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:36:34,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-07-23 15:36:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 184. [2018-07-23 15:36:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-23 15:36:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 186 transitions. [2018-07-23 15:36:34,455 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 186 transitions. Word has length 181 [2018-07-23 15:36:34,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:34,456 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 186 transitions. [2018-07-23 15:36:34,456 INFO L472 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-23 15:36:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 186 transitions. [2018-07-23 15:36:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-23 15:36:34,456 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:34,456 INFO L353 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1, 1, 1] [2018-07-23 15:36:34,456 INFO L414 AbstractCegarLoop]: === Iteration 266 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:34,457 INFO L82 PathProgramCache]: Analyzing trace with hash 585415367, now seen corresponding path program 263 times [2018-07-23 15:36:34,457 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 4005 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:34,759 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:34,759 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-23 15:36:34,759 INFO L450 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-23 15:36:34,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-23 15:36:34,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:36:34,760 INFO L87 Difference]: Start difference. First operand 184 states and 186 transitions. Second operand 92 states. [2018-07-23 15:36:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:35,277 INFO L93 Difference]: Finished difference Result 276 states and 278 transitions. [2018-07-23 15:36:35,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-23 15:36:35,278 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-23 15:36:35,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:35,278 INFO L225 Difference]: With dead ends: 276 [2018-07-23 15:36:35,278 INFO L226 Difference]: Without dead ends: 183 [2018-07-23 15:36:35,279 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:36:35,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-23 15:36:35,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-23 15:36:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-23 15:36:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-23 15:36:35,443 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 182 [2018-07-23 15:36:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:35,443 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-23 15:36:35,443 INFO L472 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-23 15:36:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-23 15:36:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-23 15:36:35,443 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:35,444 INFO L353 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1, 1, 1] [2018-07-23 15:36:35,444 INFO L414 AbstractCegarLoop]: === Iteration 267 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:35,444 INFO L82 PathProgramCache]: Analyzing trace with hash 214911597, now seen corresponding path program 264 times [2018-07-23 15:36:35,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 4005 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:35,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:35,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-23 15:36:35,788 INFO L450 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-23 15:36:35,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-23 15:36:35,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:36:35,789 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 92 states. [2018-07-23 15:36:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:35,976 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2018-07-23 15:36:35,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-23 15:36:35,976 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-23 15:36:35,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:35,977 INFO L225 Difference]: With dead ends: 187 [2018-07-23 15:36:35,977 INFO L226 Difference]: Without dead ends: 184 [2018-07-23 15:36:35,977 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:36:35,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-23 15:36:36,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-23 15:36:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-23 15:36:36,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2018-07-23 15:36:36,143 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 182 [2018-07-23 15:36:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:36,143 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2018-07-23 15:36:36,143 INFO L472 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-23 15:36:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2018-07-23 15:36:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-23 15:36:36,144 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:36,144 INFO L353 BasicCegarLoop]: trace histogram [89, 89, 1, 1, 1, 1, 1] [2018-07-23 15:36:36,144 INFO L414 AbstractCegarLoop]: === Iteration 268 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:36,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1927736607, now seen corresponding path program 265 times [2018-07-23 15:36:36,144 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:36,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:36,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-23 15:36:36,625 INFO L450 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-23 15:36:36,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-23 15:36:36,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:36:36,626 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand 92 states. [2018-07-23 15:36:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:37,763 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2018-07-23 15:36:37,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-23 15:36:37,764 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 183 [2018-07-23 15:36:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:37,764 INFO L225 Difference]: With dead ends: 278 [2018-07-23 15:36:37,764 INFO L226 Difference]: Without dead ends: 275 [2018-07-23 15:36:37,765 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:36:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-23 15:36:37,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 186. [2018-07-23 15:36:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-23 15:36:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2018-07-23 15:36:37,951 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 183 [2018-07-23 15:36:37,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:37,951 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions. [2018-07-23 15:36:37,951 INFO L472 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-23 15:36:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions. [2018-07-23 15:36:37,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-23 15:36:37,952 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:37,952 INFO L353 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1, 1, 1] [2018-07-23 15:36:37,952 INFO L414 AbstractCegarLoop]: === Iteration 269 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:37,952 INFO L82 PathProgramCache]: Analyzing trace with hash 369645805, now seen corresponding path program 266 times [2018-07-23 15:36:37,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 4095 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:38,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:38,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-23 15:36:38,301 INFO L450 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-23 15:36:38,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-23 15:36:38,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:36:38,302 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand 93 states. [2018-07-23 15:36:38,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:38,748 INFO L93 Difference]: Finished difference Result 279 states and 281 transitions. [2018-07-23 15:36:38,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-23 15:36:38,748 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-23 15:36:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:38,749 INFO L225 Difference]: With dead ends: 279 [2018-07-23 15:36:38,749 INFO L226 Difference]: Without dead ends: 185 [2018-07-23 15:36:38,749 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:36:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-23 15:36:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-23 15:36:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-23 15:36:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-23 15:36:38,899 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 184 [2018-07-23 15:36:38,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:38,899 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-23 15:36:38,899 INFO L472 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-23 15:36:38,899 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-23 15:36:38,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-23 15:36:38,900 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:38,900 INFO L353 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1, 1, 1] [2018-07-23 15:36:38,900 INFO L414 AbstractCegarLoop]: === Iteration 270 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:38,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1768930823, now seen corresponding path program 267 times [2018-07-23 15:36:38,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 4095 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:39,223 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:39,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-23 15:36:39,224 INFO L450 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-23 15:36:39,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-23 15:36:39,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:36:39,225 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 93 states. [2018-07-23 15:36:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:39,471 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-07-23 15:36:39,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-23 15:36:39,471 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-23 15:36:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:39,471 INFO L225 Difference]: With dead ends: 189 [2018-07-23 15:36:39,471 INFO L226 Difference]: Without dead ends: 186 [2018-07-23 15:36:39,472 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:36:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-23 15:36:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-23 15:36:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-23 15:36:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2018-07-23 15:36:39,641 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 184 [2018-07-23 15:36:39,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:39,641 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2018-07-23 15:36:39,641 INFO L472 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-23 15:36:39,641 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2018-07-23 15:36:39,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-23 15:36:39,642 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:39,642 INFO L353 BasicCegarLoop]: trace histogram [90, 90, 1, 1, 1, 1, 1] [2018-07-23 15:36:39,642 INFO L414 AbstractCegarLoop]: === Iteration 271 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:39,642 INFO L82 PathProgramCache]: Analyzing trace with hash -997780857, now seen corresponding path program 268 times [2018-07-23 15:36:39,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:40,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:40,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-23 15:36:40,174 INFO L450 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-23 15:36:40,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-23 15:36:40,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:36:40,175 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 93 states. [2018-07-23 15:36:41,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:41,352 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2018-07-23 15:36:41,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-23 15:36:41,353 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 185 [2018-07-23 15:36:41,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:41,353 INFO L225 Difference]: With dead ends: 281 [2018-07-23 15:36:41,353 INFO L226 Difference]: Without dead ends: 278 [2018-07-23 15:36:41,354 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:36:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-23 15:36:41,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 188. [2018-07-23 15:36:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-23 15:36:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2018-07-23 15:36:41,545 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 185 [2018-07-23 15:36:41,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:41,545 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 190 transitions. [2018-07-23 15:36:41,545 INFO L472 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-23 15:36:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 190 transitions. [2018-07-23 15:36:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-23 15:36:41,546 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:41,546 INFO L353 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1, 1, 1] [2018-07-23 15:36:41,546 INFO L414 AbstractCegarLoop]: === Iteration 272 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:41,546 INFO L82 PathProgramCache]: Analyzing trace with hash -866497017, now seen corresponding path program 269 times [2018-07-23 15:36:41,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 4186 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:41,916 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:41,916 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-23 15:36:41,917 INFO L450 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-23 15:36:41,917 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-23 15:36:41,917 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:36:41,917 INFO L87 Difference]: Start difference. First operand 188 states and 190 transitions. Second operand 94 states. [2018-07-23 15:36:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:42,405 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2018-07-23 15:36:42,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-23 15:36:42,406 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-23 15:36:42,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:42,406 INFO L225 Difference]: With dead ends: 282 [2018-07-23 15:36:42,406 INFO L226 Difference]: Without dead ends: 187 [2018-07-23 15:36:42,407 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:36:42,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-23 15:36:42,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-23 15:36:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-23 15:36:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-23 15:36:42,560 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 186 [2018-07-23 15:36:42,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:42,560 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-23 15:36:42,560 INFO L472 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-23 15:36:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-23 15:36:42,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-23 15:36:42,561 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:42,561 INFO L353 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1, 1, 1] [2018-07-23 15:36:42,561 INFO L414 AbstractCegarLoop]: === Iteration 273 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:42,561 INFO L82 PathProgramCache]: Analyzing trace with hash -438334419, now seen corresponding path program 270 times [2018-07-23 15:36:42,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 4186 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:42,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:42,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-23 15:36:42,913 INFO L450 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-23 15:36:42,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-23 15:36:42,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:36:42,914 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 94 states. [2018-07-23 15:36:43,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:43,134 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2018-07-23 15:36:43,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-23 15:36:43,135 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-23 15:36:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:43,135 INFO L225 Difference]: With dead ends: 191 [2018-07-23 15:36:43,135 INFO L226 Difference]: Without dead ends: 188 [2018-07-23 15:36:43,136 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:36:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-23 15:36:43,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-23 15:36:43,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-23 15:36:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 189 transitions. [2018-07-23 15:36:43,309 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 189 transitions. Word has length 186 [2018-07-23 15:36:43,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:43,309 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 189 transitions. [2018-07-23 15:36:43,309 INFO L472 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-23 15:36:43,309 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 189 transitions. [2018-07-23 15:36:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-23 15:36:43,309 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:43,309 INFO L353 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1] [2018-07-23 15:36:43,310 INFO L414 AbstractCegarLoop]: === Iteration 274 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:43,310 INFO L82 PathProgramCache]: Analyzing trace with hash -703526623, now seen corresponding path program 271 times [2018-07-23 15:36:43,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:43,865 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:43,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-23 15:36:43,865 INFO L450 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-23 15:36:43,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-23 15:36:43,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:36:43,866 INFO L87 Difference]: Start difference. First operand 188 states and 189 transitions. Second operand 94 states. [2018-07-23 15:36:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:45,107 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2018-07-23 15:36:45,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-23 15:36:45,107 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 187 [2018-07-23 15:36:45,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:45,108 INFO L225 Difference]: With dead ends: 284 [2018-07-23 15:36:45,108 INFO L226 Difference]: Without dead ends: 281 [2018-07-23 15:36:45,108 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:36:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-23 15:36:45,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 190. [2018-07-23 15:36:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-23 15:36:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2018-07-23 15:36:45,280 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 187 [2018-07-23 15:36:45,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:45,281 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2018-07-23 15:36:45,281 INFO L472 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-23 15:36:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2018-07-23 15:36:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-23 15:36:45,281 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:45,281 INFO L353 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1, 1, 1] [2018-07-23 15:36:45,281 INFO L414 AbstractCegarLoop]: === Iteration 275 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:45,282 INFO L82 PathProgramCache]: Analyzing trace with hash -334550355, now seen corresponding path program 272 times [2018-07-23 15:36:45,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 4278 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:45,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:45,616 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-23 15:36:45,616 INFO L450 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-23 15:36:45,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-23 15:36:45,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:36:45,617 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 95 states. [2018-07-23 15:36:46,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:46,096 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2018-07-23 15:36:46,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-23 15:36:46,096 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-23 15:36:46,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:46,096 INFO L225 Difference]: With dead ends: 285 [2018-07-23 15:36:46,096 INFO L226 Difference]: Without dead ends: 189 [2018-07-23 15:36:46,097 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:36:46,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-23 15:36:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-23 15:36:46,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-23 15:36:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-23 15:36:46,253 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 188 [2018-07-23 15:36:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:46,253 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-23 15:36:46,253 INFO L472 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-23 15:36:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-23 15:36:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-23 15:36:46,254 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:46,254 INFO L353 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1, 1, 1] [2018-07-23 15:36:46,254 INFO L414 AbstractCegarLoop]: === Iteration 276 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:46,254 INFO L82 PathProgramCache]: Analyzing trace with hash 53588295, now seen corresponding path program 273 times [2018-07-23 15:36:46,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 4278 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:46,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:46,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-23 15:36:46,580 INFO L450 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-23 15:36:46,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-23 15:36:46,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:36:46,580 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 95 states. [2018-07-23 15:36:46,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:46,777 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2018-07-23 15:36:46,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-23 15:36:46,777 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-23 15:36:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:46,777 INFO L225 Difference]: With dead ends: 193 [2018-07-23 15:36:46,778 INFO L226 Difference]: Without dead ends: 190 [2018-07-23 15:36:46,778 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:36:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-23 15:36:46,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-23 15:36:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-23 15:36:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2018-07-23 15:36:46,936 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 188 [2018-07-23 15:36:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:46,936 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2018-07-23 15:36:46,936 INFO L472 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-23 15:36:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2018-07-23 15:36:46,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-23 15:36:46,937 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:46,937 INFO L353 BasicCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1] [2018-07-23 15:36:46,937 INFO L414 AbstractCegarLoop]: === Iteration 277 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:46,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1661175623, now seen corresponding path program 274 times [2018-07-23 15:36:46,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:47,418 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:47,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-23 15:36:47,418 INFO L450 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-23 15:36:47,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-23 15:36:47,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:36:47,419 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 95 states. [2018-07-23 15:36:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:48,569 INFO L93 Difference]: Finished difference Result 287 states and 289 transitions. [2018-07-23 15:36:48,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-23 15:36:48,569 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 189 [2018-07-23 15:36:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:48,570 INFO L225 Difference]: With dead ends: 287 [2018-07-23 15:36:48,570 INFO L226 Difference]: Without dead ends: 284 [2018-07-23 15:36:48,570 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:36:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-07-23 15:36:48,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 192. [2018-07-23 15:36:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-23 15:36:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 194 transitions. [2018-07-23 15:36:48,738 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 194 transitions. Word has length 189 [2018-07-23 15:36:48,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:48,739 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 194 transitions. [2018-07-23 15:36:48,739 INFO L472 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-23 15:36:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 194 transitions. [2018-07-23 15:36:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-23 15:36:48,739 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:48,739 INFO L353 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1, 1, 1] [2018-07-23 15:36:48,739 INFO L414 AbstractCegarLoop]: === Iteration 278 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:48,739 INFO L82 PathProgramCache]: Analyzing trace with hash -43224761, now seen corresponding path program 275 times [2018-07-23 15:36:48,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 4371 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:49,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:49,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-23 15:36:49,057 INFO L450 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-23 15:36:49,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-23 15:36:49,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:36:49,057 INFO L87 Difference]: Start difference. First operand 192 states and 194 transitions. Second operand 96 states. [2018-07-23 15:36:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:49,568 INFO L93 Difference]: Finished difference Result 288 states and 290 transitions. [2018-07-23 15:36:49,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-23 15:36:49,569 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-23 15:36:49,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:49,569 INFO L225 Difference]: With dead ends: 288 [2018-07-23 15:36:49,569 INFO L226 Difference]: Without dead ends: 191 [2018-07-23 15:36:49,569 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:36:49,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-23 15:36:49,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-23 15:36:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-23 15:36:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-23 15:36:49,729 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 190 [2018-07-23 15:36:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:49,729 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-23 15:36:49,730 INFO L472 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-23 15:36:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-23 15:36:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-23 15:36:49,730 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:49,730 INFO L353 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1, 1, 1] [2018-07-23 15:36:49,730 INFO L414 AbstractCegarLoop]: === Iteration 279 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:49,730 INFO L82 PathProgramCache]: Analyzing trace with hash -895828499, now seen corresponding path program 276 times [2018-07-23 15:36:49,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 4371 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:50,064 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:50,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-23 15:36:50,064 INFO L450 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-23 15:36:50,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-23 15:36:50,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:36:50,065 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 96 states. [2018-07-23 15:36:50,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:50,265 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2018-07-23 15:36:50,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-23 15:36:50,265 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-23 15:36:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:50,265 INFO L225 Difference]: With dead ends: 195 [2018-07-23 15:36:50,265 INFO L226 Difference]: Without dead ends: 192 [2018-07-23 15:36:50,266 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:36:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-23 15:36:50,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-23 15:36:50,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-23 15:36:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2018-07-23 15:36:50,427 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 190 [2018-07-23 15:36:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:50,427 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2018-07-23 15:36:50,427 INFO L472 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-23 15:36:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2018-07-23 15:36:50,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-23 15:36:50,428 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:50,428 INFO L353 BasicCegarLoop]: trace histogram [93, 93, 1, 1, 1, 1, 1] [2018-07-23 15:36:50,428 INFO L414 AbstractCegarLoop]: === Iteration 280 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:50,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2000941215, now seen corresponding path program 277 times [2018-07-23 15:36:50,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:50,999 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:50,999 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-23 15:36:50,999 INFO L450 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-23 15:36:51,000 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-23 15:36:51,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=8931, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:36:51,000 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand 96 states. [2018-07-23 15:36:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:52,204 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2018-07-23 15:36:52,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-23 15:36:52,205 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 191 [2018-07-23 15:36:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:52,205 INFO L225 Difference]: With dead ends: 290 [2018-07-23 15:36:52,205 INFO L226 Difference]: Without dead ends: 287 [2018-07-23 15:36:52,205 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=8931, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:36:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-23 15:36:52,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 194. [2018-07-23 15:36:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-23 15:36:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions. [2018-07-23 15:36:52,373 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 191 [2018-07-23 15:36:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:52,374 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 196 transitions. [2018-07-23 15:36:52,374 INFO L472 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-23 15:36:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 196 transitions. [2018-07-23 15:36:52,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-23 15:36:52,374 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:52,374 INFO L353 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1, 1, 1] [2018-07-23 15:36:52,374 INFO L414 AbstractCegarLoop]: === Iteration 281 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:52,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1899697043, now seen corresponding path program 278 times [2018-07-23 15:36:52,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 4465 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:52,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:52,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-23 15:36:52,703 INFO L450 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-23 15:36:52,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-23 15:36:52,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:36:52,703 INFO L87 Difference]: Start difference. First operand 194 states and 196 transitions. Second operand 97 states. [2018-07-23 15:36:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:53,197 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2018-07-23 15:36:53,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-23 15:36:53,197 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-23 15:36:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:53,197 INFO L225 Difference]: With dead ends: 291 [2018-07-23 15:36:53,197 INFO L226 Difference]: Without dead ends: 193 [2018-07-23 15:36:53,198 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:36:53,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-23 15:36:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-23 15:36:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-23 15:36:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-23 15:36:53,361 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 192 [2018-07-23 15:36:53,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:53,362 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-23 15:36:53,362 INFO L472 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-23 15:36:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-23 15:36:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-23 15:36:53,362 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:53,362 INFO L353 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1, 1, 1] [2018-07-23 15:36:53,362 INFO L414 AbstractCegarLoop]: === Iteration 282 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:53,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1734358151, now seen corresponding path program 279 times [2018-07-23 15:36:53,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 4465 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:53,710 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:53,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-23 15:36:53,710 INFO L450 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-23 15:36:53,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-23 15:36:53,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:36:53,711 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 97 states. [2018-07-23 15:36:53,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:53,937 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2018-07-23 15:36:53,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-23 15:36:53,937 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-23 15:36:53,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:53,938 INFO L225 Difference]: With dead ends: 197 [2018-07-23 15:36:53,938 INFO L226 Difference]: Without dead ends: 194 [2018-07-23 15:36:53,938 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:36:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-23 15:36:54,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-23 15:36:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-23 15:36:54,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2018-07-23 15:36:54,105 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 192 [2018-07-23 15:36:54,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:54,105 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2018-07-23 15:36:54,105 INFO L472 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-23 15:36:54,105 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2018-07-23 15:36:54,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-23 15:36:54,105 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:54,105 INFO L353 BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1] [2018-07-23 15:36:54,105 INFO L414 AbstractCegarLoop]: === Iteration 283 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:54,106 INFO L82 PathProgramCache]: Analyzing trace with hash -2069533689, now seen corresponding path program 280 times [2018-07-23 15:36:54,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:54,637 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:54,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-23 15:36:54,638 INFO L450 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-23 15:36:54,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-23 15:36:54,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:36:54,638 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 97 states. [2018-07-23 15:36:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:55,819 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2018-07-23 15:36:55,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-23 15:36:55,819 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 193 [2018-07-23 15:36:55,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:55,819 INFO L225 Difference]: With dead ends: 293 [2018-07-23 15:36:55,819 INFO L226 Difference]: Without dead ends: 290 [2018-07-23 15:36:55,820 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:36:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-07-23 15:36:55,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 196. [2018-07-23 15:36:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-23 15:36:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2018-07-23 15:36:55,993 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 193 [2018-07-23 15:36:55,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:55,993 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2018-07-23 15:36:55,993 INFO L472 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-23 15:36:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2018-07-23 15:36:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-23 15:36:55,993 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:55,993 INFO L353 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1] [2018-07-23 15:36:55,994 INFO L414 AbstractCegarLoop]: === Iteration 284 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:55,994 INFO L82 PathProgramCache]: Analyzing trace with hash 268903559, now seen corresponding path program 281 times [2018-07-23 15:36:55,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 4560 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:56,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:56,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-23 15:36:56,370 INFO L450 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-23 15:36:56,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-23 15:36:56,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:36:56,370 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand 98 states. [2018-07-23 15:36:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:56,881 INFO L93 Difference]: Finished difference Result 294 states and 296 transitions. [2018-07-23 15:36:56,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-23 15:36:56,882 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-23 15:36:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:56,882 INFO L225 Difference]: With dead ends: 294 [2018-07-23 15:36:56,882 INFO L226 Difference]: Without dead ends: 195 [2018-07-23 15:36:56,882 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:36:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-23 15:36:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-23 15:36:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-23 15:36:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-23 15:36:57,049 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 194 [2018-07-23 15:36:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:57,049 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-23 15:36:57,049 INFO L472 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-23 15:36:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-23 15:36:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-23 15:36:57,050 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:57,050 INFO L353 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1] [2018-07-23 15:36:57,050 INFO L414 AbstractCegarLoop]: === Iteration 285 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:57,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1255464877, now seen corresponding path program 282 times [2018-07-23 15:36:57,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 4560 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:57,401 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:57,401 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-23 15:36:57,401 INFO L450 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-23 15:36:57,401 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-23 15:36:57,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:36:57,402 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 98 states. [2018-07-23 15:36:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:57,625 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2018-07-23 15:36:57,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-23 15:36:57,625 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-23 15:36:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:57,626 INFO L225 Difference]: With dead ends: 199 [2018-07-23 15:36:57,626 INFO L226 Difference]: Without dead ends: 196 [2018-07-23 15:36:57,626 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:36:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-23 15:36:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-23 15:36:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-23 15:36:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2018-07-23 15:36:57,794 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 194 [2018-07-23 15:36:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:57,794 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2018-07-23 15:36:57,794 INFO L472 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-23 15:36:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2018-07-23 15:36:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-23 15:36:57,795 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:57,795 INFO L353 BasicCegarLoop]: trace histogram [95, 95, 1, 1, 1, 1, 1] [2018-07-23 15:36:57,795 INFO L414 AbstractCegarLoop]: === Iteration 286 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:57,795 INFO L82 PathProgramCache]: Analyzing trace with hash 264644001, now seen corresponding path program 283 times [2018-07-23 15:36:57,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:58,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:58,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-23 15:36:58,324 INFO L450 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-23 15:36:58,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-23 15:36:58,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=9313, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:36:58,325 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand 98 states. [2018-07-23 15:36:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:59,654 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2018-07-23 15:36:59,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-23 15:36:59,654 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 195 [2018-07-23 15:36:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:59,655 INFO L225 Difference]: With dead ends: 296 [2018-07-23 15:36:59,655 INFO L226 Difference]: Without dead ends: 293 [2018-07-23 15:36:59,655 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=9313, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:36:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-23 15:36:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 198. [2018-07-23 15:36:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-23 15:36:59,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2018-07-23 15:36:59,852 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 195 [2018-07-23 15:36:59,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:59,852 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2018-07-23 15:36:59,852 INFO L472 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-23 15:36:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2018-07-23 15:36:59,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-23 15:36:59,852 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:59,853 INFO L353 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1, 1, 1] [2018-07-23 15:36:59,853 INFO L414 AbstractCegarLoop]: === Iteration 287 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:36:59,853 INFO L82 PathProgramCache]: Analyzing trace with hash -386032083, now seen corresponding path program 284 times [2018-07-23 15:36:59,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 4656 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:00,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:00,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-23 15:37:00,265 INFO L450 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-23 15:37:00,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-23 15:37:00,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:37:00,266 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 99 states. [2018-07-23 15:37:00,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:00,893 INFO L93 Difference]: Finished difference Result 297 states and 299 transitions. [2018-07-23 15:37:00,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-23 15:37:00,893 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-23 15:37:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:00,893 INFO L225 Difference]: With dead ends: 297 [2018-07-23 15:37:00,893 INFO L226 Difference]: Without dead ends: 197 [2018-07-23 15:37:00,894 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:37:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-23 15:37:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-23 15:37:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-23 15:37:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-23 15:37:01,085 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 196 [2018-07-23 15:37:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:01,085 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-23 15:37:01,085 INFO L472 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-23 15:37:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-23 15:37:01,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-23 15:37:01,085 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:01,086 INFO L353 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1, 1, 1] [2018-07-23 15:37:01,086 INFO L414 AbstractCegarLoop]: === Iteration 288 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:01,086 INFO L82 PathProgramCache]: Analyzing trace with hash 132597703, now seen corresponding path program 285 times [2018-07-23 15:37:01,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 4656 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:01,498 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:01,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-23 15:37:01,499 INFO L450 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-23 15:37:01,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-23 15:37:01,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:37:01,500 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 99 states. [2018-07-23 15:37:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:01,749 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-07-23 15:37:01,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-23 15:37:01,749 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-23 15:37:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:01,750 INFO L225 Difference]: With dead ends: 201 [2018-07-23 15:37:01,750 INFO L226 Difference]: Without dead ends: 198 [2018-07-23 15:37:01,750 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:37:01,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-23 15:37:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-23 15:37:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-23 15:37:01,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2018-07-23 15:37:01,969 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 196 [2018-07-23 15:37:01,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:01,970 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2018-07-23 15:37:01,970 INFO L472 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-23 15:37:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2018-07-23 15:37:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-23 15:37:01,970 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:01,970 INFO L353 BasicCegarLoop]: trace histogram [96, 96, 1, 1, 1, 1, 1] [2018-07-23 15:37:01,970 INFO L414 AbstractCegarLoop]: === Iteration 289 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:01,971 INFO L82 PathProgramCache]: Analyzing trace with hash -184500025, now seen corresponding path program 286 times [2018-07-23 15:37:01,971 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:02,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:02,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-23 15:37:02,595 INFO L450 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-23 15:37:02,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-23 15:37:02,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:37:02,596 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 99 states. [2018-07-23 15:37:03,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:03,954 INFO L93 Difference]: Finished difference Result 299 states and 301 transitions. [2018-07-23 15:37:03,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-23 15:37:03,954 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 197 [2018-07-23 15:37:03,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:03,954 INFO L225 Difference]: With dead ends: 299 [2018-07-23 15:37:03,954 INFO L226 Difference]: Without dead ends: 296 [2018-07-23 15:37:03,955 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:37:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-07-23 15:37:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 200. [2018-07-23 15:37:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-23 15:37:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2018-07-23 15:37:04,282 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 197 [2018-07-23 15:37:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:04,282 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2018-07-23 15:37:04,283 INFO L472 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-23 15:37:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2018-07-23 15:37:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-23 15:37:04,283 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:04,284 INFO L353 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1, 1, 1] [2018-07-23 15:37:04,284 INFO L414 AbstractCegarLoop]: === Iteration 290 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1424595001, now seen corresponding path program 287 times [2018-07-23 15:37:04,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 4753 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:04,820 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:04,820 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-23 15:37:04,820 INFO L450 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-23 15:37:04,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-23 15:37:04,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:37:04,821 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand 100 states. [2018-07-23 15:37:05,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:05,464 INFO L93 Difference]: Finished difference Result 300 states and 302 transitions. [2018-07-23 15:37:05,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-23 15:37:05,465 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-23 15:37:05,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:05,465 INFO L225 Difference]: With dead ends: 300 [2018-07-23 15:37:05,465 INFO L226 Difference]: Without dead ends: 199 [2018-07-23 15:37:05,466 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:37:05,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-23 15:37:05,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-23 15:37:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-23 15:37:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-23 15:37:05,660 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 198 [2018-07-23 15:37:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:05,661 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-23 15:37:05,661 INFO L472 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-23 15:37:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-23 15:37:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-23 15:37:05,661 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:05,661 INFO L353 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1, 1, 1] [2018-07-23 15:37:05,661 INFO L414 AbstractCegarLoop]: === Iteration 291 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:05,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1768026477, now seen corresponding path program 288 times [2018-07-23 15:37:05,662 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 4753 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:06,114 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:06,114 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-23 15:37:06,114 INFO L450 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-23 15:37:06,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-23 15:37:06,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:37:06,115 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 100 states. [2018-07-23 15:37:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:06,369 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2018-07-23 15:37:06,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-23 15:37:06,369 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-23 15:37:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:06,370 INFO L225 Difference]: With dead ends: 203 [2018-07-23 15:37:06,370 INFO L226 Difference]: Without dead ends: 200 [2018-07-23 15:37:06,370 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:37:06,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-23 15:37:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-23 15:37:06,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-23 15:37:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2018-07-23 15:37:06,545 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 198 [2018-07-23 15:37:06,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:06,546 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2018-07-23 15:37:06,546 INFO L472 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-23 15:37:06,546 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2018-07-23 15:37:06,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-23 15:37:06,546 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:06,546 INFO L353 BasicCegarLoop]: trace histogram [97, 97, 1, 1, 1, 1, 1] [2018-07-23 15:37:06,546 INFO L414 AbstractCegarLoop]: === Iteration 292 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:06,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1025815583, now seen corresponding path program 289 times [2018-07-23 15:37:06,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:07,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:07,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-23 15:37:07,094 INFO L450 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-23 15:37:07,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-23 15:37:07,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=9703, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:37:07,094 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand 100 states. [2018-07-23 15:37:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:08,478 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2018-07-23 15:37:08,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-23 15:37:08,478 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 199 [2018-07-23 15:37:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:08,479 INFO L225 Difference]: With dead ends: 302 [2018-07-23 15:37:08,479 INFO L226 Difference]: Without dead ends: 299 [2018-07-23 15:37:08,480 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=9703, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:37:08,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-23 15:37:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 202. [2018-07-23 15:37:08,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-23 15:37:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 204 transitions. [2018-07-23 15:37:08,684 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 204 transitions. Word has length 199 [2018-07-23 15:37:08,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:08,684 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 204 transitions. [2018-07-23 15:37:08,684 INFO L472 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-23 15:37:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 204 transitions. [2018-07-23 15:37:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-23 15:37:08,685 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:08,685 INFO L353 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1, 1, 1] [2018-07-23 15:37:08,685 INFO L414 AbstractCegarLoop]: === Iteration 293 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:08,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1735573523, now seen corresponding path program 290 times [2018-07-23 15:37:08,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 4851 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:09,118 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:09,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-23 15:37:09,118 INFO L450 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-23 15:37:09,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-23 15:37:09,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:37:09,119 INFO L87 Difference]: Start difference. First operand 202 states and 204 transitions. Second operand 101 states. [2018-07-23 15:37:09,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:09,798 INFO L93 Difference]: Finished difference Result 303 states and 305 transitions. [2018-07-23 15:37:09,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-23 15:37:09,798 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-23 15:37:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:09,799 INFO L225 Difference]: With dead ends: 303 [2018-07-23 15:37:09,799 INFO L226 Difference]: Without dead ends: 201 [2018-07-23 15:37:09,800 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:37:09,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-23 15:37:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-23 15:37:09,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-23 15:37:09,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-23 15:37:09,999 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 200 [2018-07-23 15:37:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:09,999 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-23 15:37:09,999 INFO L472 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-23 15:37:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-23 15:37:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-23 15:37:10,000 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:10,000 INFO L353 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1, 1, 1] [2018-07-23 15:37:10,000 INFO L414 AbstractCegarLoop]: === Iteration 294 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:10,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1548555513, now seen corresponding path program 291 times [2018-07-23 15:37:10,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 4851 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:10,402 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:10,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-23 15:37:10,402 INFO L450 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-23 15:37:10,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-23 15:37:10,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:37:10,403 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 101 states. [2018-07-23 15:37:10,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:10,637 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2018-07-23 15:37:10,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-23 15:37:10,637 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-23 15:37:10,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:10,638 INFO L225 Difference]: With dead ends: 205 [2018-07-23 15:37:10,638 INFO L226 Difference]: Without dead ends: 202 [2018-07-23 15:37:10,639 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:37:10,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-23 15:37:10,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-23 15:37:10,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-23 15:37:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2018-07-23 15:37:10,826 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 200 [2018-07-23 15:37:10,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:10,826 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2018-07-23 15:37:10,826 INFO L472 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-23 15:37:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2018-07-23 15:37:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-23 15:37:10,827 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:10,827 INFO L353 BasicCegarLoop]: trace histogram [98, 98, 1, 1, 1, 1, 1] [2018-07-23 15:37:10,827 INFO L414 AbstractCegarLoop]: === Iteration 295 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:10,827 INFO L82 PathProgramCache]: Analyzing trace with hash -760642169, now seen corresponding path program 292 times [2018-07-23 15:37:10,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:11,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:11,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-23 15:37:11,407 INFO L450 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-23 15:37:11,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-23 15:37:11,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:37:11,408 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 101 states. [2018-07-23 15:37:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:12,739 INFO L93 Difference]: Finished difference Result 305 states and 307 transitions. [2018-07-23 15:37:12,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-23 15:37:12,739 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 201 [2018-07-23 15:37:12,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:12,739 INFO L225 Difference]: With dead ends: 305 [2018-07-23 15:37:12,740 INFO L226 Difference]: Without dead ends: 302 [2018-07-23 15:37:12,741 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:37:12,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-07-23 15:37:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 204. [2018-07-23 15:37:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-23 15:37:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 206 transitions. [2018-07-23 15:37:12,971 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 206 transitions. Word has length 201 [2018-07-23 15:37:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:12,971 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 206 transitions. [2018-07-23 15:37:12,972 INFO L472 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-23 15:37:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 206 transitions. [2018-07-23 15:37:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-23 15:37:12,972 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:12,972 INFO L353 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1, 1, 1] [2018-07-23 15:37:12,972 INFO L414 AbstractCegarLoop]: === Iteration 296 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:12,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2105132281, now seen corresponding path program 293 times [2018-07-23 15:37:12,972 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 4950 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:13,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:13,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-23 15:37:13,412 INFO L450 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-23 15:37:13,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-23 15:37:13,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:37:13,413 INFO L87 Difference]: Start difference. First operand 204 states and 206 transitions. Second operand 102 states. [2018-07-23 15:37:13,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:13,940 INFO L93 Difference]: Finished difference Result 306 states and 308 transitions. [2018-07-23 15:37:13,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-23 15:37:13,940 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-23 15:37:13,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:13,940 INFO L225 Difference]: With dead ends: 306 [2018-07-23 15:37:13,940 INFO L226 Difference]: Without dead ends: 203 [2018-07-23 15:37:13,941 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:37:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-23 15:37:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-23 15:37:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-23 15:37:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-23 15:37:14,121 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 202 [2018-07-23 15:37:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:14,121 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-23 15:37:14,121 INFO L472 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-23 15:37:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-23 15:37:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-23 15:37:14,122 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:14,122 INFO L353 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1, 1, 1] [2018-07-23 15:37:14,122 INFO L414 AbstractCegarLoop]: === Iteration 297 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:14,122 INFO L82 PathProgramCache]: Analyzing trace with hash -602541267, now seen corresponding path program 294 times [2018-07-23 15:37:14,122 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 4950 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:14,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:14,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-23 15:37:14,513 INFO L450 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-23 15:37:14,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-23 15:37:14,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:37:14,514 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 102 states. [2018-07-23 15:37:14,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:14,754 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2018-07-23 15:37:14,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-23 15:37:14,754 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-23 15:37:14,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:14,755 INFO L225 Difference]: With dead ends: 207 [2018-07-23 15:37:14,755 INFO L226 Difference]: Without dead ends: 204 [2018-07-23 15:37:14,755 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:37:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-23 15:37:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-23 15:37:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-23 15:37:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2018-07-23 15:37:14,936 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 202 [2018-07-23 15:37:14,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:14,936 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2018-07-23 15:37:14,936 INFO L472 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-23 15:37:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2018-07-23 15:37:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-23 15:37:14,937 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:14,937 INFO L353 BasicCegarLoop]: trace histogram [99, 99, 1, 1, 1, 1, 1] [2018-07-23 15:37:14,937 INFO L414 AbstractCegarLoop]: === Iteration 298 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:14,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1498971615, now seen corresponding path program 295 times [2018-07-23 15:37:14,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:15,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:15,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-23 15:37:15,516 INFO L450 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-23 15:37:15,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-23 15:37:15,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=10101, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:37:15,517 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand 102 states. [2018-07-23 15:37:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:16,827 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2018-07-23 15:37:16,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-23 15:37:16,827 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 203 [2018-07-23 15:37:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:16,827 INFO L225 Difference]: With dead ends: 308 [2018-07-23 15:37:16,828 INFO L226 Difference]: Without dead ends: 305 [2018-07-23 15:37:16,828 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=10101, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:37:16,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-23 15:37:17,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 206. [2018-07-23 15:37:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-23 15:37:17,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 208 transitions. [2018-07-23 15:37:17,018 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 208 transitions. Word has length 203 [2018-07-23 15:37:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:17,018 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 208 transitions. [2018-07-23 15:37:17,018 INFO L472 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-23 15:37:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 208 transitions. [2018-07-23 15:37:17,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-23 15:37:17,018 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:17,019 INFO L353 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1, 1, 1] [2018-07-23 15:37:17,019 INFO L414 AbstractCegarLoop]: === Iteration 299 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:17,019 INFO L82 PathProgramCache]: Analyzing trace with hash 776458669, now seen corresponding path program 296 times [2018-07-23 15:37:17,019 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 5050 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:17,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:17,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-23 15:37:17,413 INFO L450 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-23 15:37:17,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-23 15:37:17,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:37:17,414 INFO L87 Difference]: Start difference. First operand 206 states and 208 transitions. Second operand 103 states. [2018-07-23 15:37:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:17,993 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2018-07-23 15:37:17,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-23 15:37:17,993 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-23 15:37:17,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:17,994 INFO L225 Difference]: With dead ends: 309 [2018-07-23 15:37:17,994 INFO L226 Difference]: Without dead ends: 205 [2018-07-23 15:37:17,994 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:37:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-23 15:37:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-23 15:37:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-23 15:37:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-23 15:37:18,180 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 204 [2018-07-23 15:37:18,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:18,180 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-23 15:37:18,180 INFO L472 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-23 15:37:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-23 15:37:18,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-23 15:37:18,180 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:18,181 INFO L353 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1, 1, 1] [2018-07-23 15:37:18,181 INFO L414 AbstractCegarLoop]: === Iteration 300 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:18,181 INFO L82 PathProgramCache]: Analyzing trace with hash 112139847, now seen corresponding path program 297 times [2018-07-23 15:37:18,181 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:18,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 5050 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:18,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:18,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-23 15:37:18,595 INFO L450 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-23 15:37:18,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-23 15:37:18,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:37:18,596 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 103 states. [2018-07-23 15:37:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:18,848 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2018-07-23 15:37:18,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-23 15:37:18,848 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-23 15:37:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:18,849 INFO L225 Difference]: With dead ends: 209 [2018-07-23 15:37:18,849 INFO L226 Difference]: Without dead ends: 206 [2018-07-23 15:37:18,849 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:37:18,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-23 15:37:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-23 15:37:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-23 15:37:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2018-07-23 15:37:19,035 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 204 [2018-07-23 15:37:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:19,035 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2018-07-23 15:37:19,035 INFO L472 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-23 15:37:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2018-07-23 15:37:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-23 15:37:19,036 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:19,036 INFO L353 BasicCegarLoop]: trace histogram [100, 100, 1, 1, 1, 1, 1] [2018-07-23 15:37:19,036 INFO L414 AbstractCegarLoop]: === Iteration 301 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:19,036 INFO L82 PathProgramCache]: Analyzing trace with hash -818693561, now seen corresponding path program 298 times [2018-07-23 15:37:19,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:19,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:19,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:19,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-23 15:37:19,634 INFO L450 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-23 15:37:19,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-23 15:37:19,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:37:19,635 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand 103 states. [2018-07-23 15:37:21,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:21,010 INFO L93 Difference]: Finished difference Result 311 states and 313 transitions. [2018-07-23 15:37:21,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-23 15:37:21,010 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 205 [2018-07-23 15:37:21,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:21,011 INFO L225 Difference]: With dead ends: 311 [2018-07-23 15:37:21,011 INFO L226 Difference]: Without dead ends: 308 [2018-07-23 15:37:21,011 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:37:21,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-07-23 15:37:21,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 208. [2018-07-23 15:37:21,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-23 15:37:21,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2018-07-23 15:37:21,204 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 205 [2018-07-23 15:37:21,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:21,204 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2018-07-23 15:37:21,204 INFO L472 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-23 15:37:21,204 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2018-07-23 15:37:21,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-23 15:37:21,205 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:21,205 INFO L353 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1, 1, 1] [2018-07-23 15:37:21,205 INFO L414 AbstractCegarLoop]: === Iteration 302 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:21,205 INFO L82 PathProgramCache]: Analyzing trace with hash 390241863, now seen corresponding path program 299 times [2018-07-23 15:37:21,205 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 5151 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:21,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:21,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-23 15:37:21,615 INFO L450 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-23 15:37:21,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-23 15:37:21,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:37:21,616 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand 104 states. [2018-07-23 15:37:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:22,114 INFO L93 Difference]: Finished difference Result 312 states and 314 transitions. [2018-07-23 15:37:22,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-23 15:37:22,114 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-23 15:37:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:22,114 INFO L225 Difference]: With dead ends: 312 [2018-07-23 15:37:22,114 INFO L226 Difference]: Without dead ends: 207 [2018-07-23 15:37:22,115 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:37:22,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-23 15:37:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-23 15:37:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-23 15:37:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-23 15:37:22,420 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 206 [2018-07-23 15:37:22,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:22,420 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-23 15:37:22,420 INFO L472 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-23 15:37:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-23 15:37:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-23 15:37:22,421 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:22,421 INFO L353 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1, 1, 1] [2018-07-23 15:37:22,421 INFO L414 AbstractCegarLoop]: === Iteration 303 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:22,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1271194861, now seen corresponding path program 300 times [2018-07-23 15:37:22,421 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 5151 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:22,847 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:22,847 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-23 15:37:22,847 INFO L450 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-23 15:37:22,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-23 15:37:22,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:37:22,848 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 104 states. [2018-07-23 15:37:23,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:23,202 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2018-07-23 15:37:23,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-23 15:37:23,202 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-23 15:37:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:23,202 INFO L225 Difference]: With dead ends: 211 [2018-07-23 15:37:23,203 INFO L226 Difference]: Without dead ends: 208 [2018-07-23 15:37:23,203 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:37:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-23 15:37:23,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-23 15:37:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-23 15:37:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2018-07-23 15:37:23,416 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 206 [2018-07-23 15:37:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:23,417 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2018-07-23 15:37:23,417 INFO L472 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-23 15:37:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2018-07-23 15:37:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-23 15:37:23,417 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:23,417 INFO L353 BasicCegarLoop]: trace histogram [101, 101, 1, 1, 1, 1, 1] [2018-07-23 15:37:23,418 INFO L414 AbstractCegarLoop]: === Iteration 304 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash 752273505, now seen corresponding path program 301 times [2018-07-23 15:37:23,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:24,123 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:24,123 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-23 15:37:24,123 INFO L450 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-23 15:37:24,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-23 15:37:24,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=10507, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:37:24,124 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand 104 states. [2018-07-23 15:37:25,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:25,590 INFO L93 Difference]: Finished difference Result 314 states and 316 transitions. [2018-07-23 15:37:25,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-23 15:37:25,590 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 207 [2018-07-23 15:37:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:25,591 INFO L225 Difference]: With dead ends: 314 [2018-07-23 15:37:25,591 INFO L226 Difference]: Without dead ends: 311 [2018-07-23 15:37:25,591 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=10507, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:37:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-23 15:37:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 210. [2018-07-23 15:37:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-23 15:37:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 212 transitions. [2018-07-23 15:37:25,812 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 212 transitions. Word has length 207 [2018-07-23 15:37:25,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:25,812 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 212 transitions. [2018-07-23 15:37:25,812 INFO L472 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-23 15:37:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 212 transitions. [2018-07-23 15:37:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-23 15:37:25,813 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:25,813 INFO L353 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1, 1, 1] [2018-07-23 15:37:25,813 INFO L414 AbstractCegarLoop]: === Iteration 305 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:25,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1845580653, now seen corresponding path program 302 times [2018-07-23 15:37:25,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 5253 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:26,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:26,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-23 15:37:26,301 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-23 15:37:26,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-23 15:37:26,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:37:26,302 INFO L87 Difference]: Start difference. First operand 210 states and 212 transitions. Second operand 105 states. [2018-07-23 15:37:27,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:27,038 INFO L93 Difference]: Finished difference Result 315 states and 317 transitions. [2018-07-23 15:37:27,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-23 15:37:27,038 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-23 15:37:27,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:27,039 INFO L225 Difference]: With dead ends: 315 [2018-07-23 15:37:27,039 INFO L226 Difference]: Without dead ends: 209 [2018-07-23 15:37:27,040 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:37:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-23 15:37:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-23 15:37:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-23 15:37:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-23 15:37:27,256 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 208 [2018-07-23 15:37:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:27,256 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-23 15:37:27,256 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-23 15:37:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-23 15:37:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-23 15:37:27,257 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:27,257 INFO L353 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1, 1, 1] [2018-07-23 15:37:27,257 INFO L414 AbstractCegarLoop]: === Iteration 306 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:27,257 INFO L82 PathProgramCache]: Analyzing trace with hash -909647481, now seen corresponding path program 303 times [2018-07-23 15:37:27,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 5253 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:27,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:27,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-23 15:37:27,766 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-23 15:37:27,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-23 15:37:27,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:37:27,767 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 105 states. [2018-07-23 15:37:28,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:28,049 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-07-23 15:37:28,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-23 15:37:28,049 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-23 15:37:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:28,050 INFO L225 Difference]: With dead ends: 213 [2018-07-23 15:37:28,050 INFO L226 Difference]: Without dead ends: 210 [2018-07-23 15:37:28,050 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:37:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-23 15:37:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-23 15:37:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-23 15:37:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2018-07-23 15:37:28,264 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 208 [2018-07-23 15:37:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:28,265 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2018-07-23 15:37:28,265 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-23 15:37:28,265 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2018-07-23 15:37:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-23 15:37:28,265 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:28,265 INFO L353 BasicCegarLoop]: trace histogram [102, 102, 1, 1, 1, 1, 1] [2018-07-23 15:37:28,265 INFO L414 AbstractCegarLoop]: === Iteration 307 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:28,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1865637639, now seen corresponding path program 304 times [2018-07-23 15:37:28,266 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:28,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:28,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-23 15:37:28,981 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-23 15:37:28,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-23 15:37:28,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:37:28,981 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 105 states. [2018-07-23 15:37:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:30,536 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2018-07-23 15:37:30,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-23 15:37:30,537 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 209 [2018-07-23 15:37:30,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:30,537 INFO L225 Difference]: With dead ends: 317 [2018-07-23 15:37:30,537 INFO L226 Difference]: Without dead ends: 314 [2018-07-23 15:37:30,538 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:37:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-07-23 15:37:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 212. [2018-07-23 15:37:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-23 15:37:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 214 transitions. [2018-07-23 15:37:30,743 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 214 transitions. Word has length 209 [2018-07-23 15:37:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:30,743 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 214 transitions. [2018-07-23 15:37:30,743 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-23 15:37:30,743 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 214 transitions. [2018-07-23 15:37:30,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-23 15:37:30,743 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:30,743 INFO L353 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1, 1, 1] [2018-07-23 15:37:30,744 INFO L414 AbstractCegarLoop]: === Iteration 308 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:30,744 INFO L82 PathProgramCache]: Analyzing trace with hash 2000130439, now seen corresponding path program 305 times [2018-07-23 15:37:30,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 5356 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:31,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:31,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-23 15:37:31,199 INFO L450 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-23 15:37:31,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-23 15:37:31,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:37:31,200 INFO L87 Difference]: Start difference. First operand 212 states and 214 transitions. Second operand 106 states. [2018-07-23 15:37:31,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:31,947 INFO L93 Difference]: Finished difference Result 318 states and 320 transitions. [2018-07-23 15:37:31,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-23 15:37:31,947 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-23 15:37:31,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:31,947 INFO L225 Difference]: With dead ends: 318 [2018-07-23 15:37:31,948 INFO L226 Difference]: Without dead ends: 211 [2018-07-23 15:37:31,948 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:37:31,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-23 15:37:32,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-23 15:37:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-23 15:37:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-23 15:37:32,168 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 210 [2018-07-23 15:37:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:32,169 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-23 15:37:32,169 INFO L472 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-23 15:37:32,169 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-23 15:37:32,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-23 15:37:32,169 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:32,169 INFO L353 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1, 1, 1] [2018-07-23 15:37:32,169 INFO L414 AbstractCegarLoop]: === Iteration 309 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:32,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1807563091, now seen corresponding path program 306 times [2018-07-23 15:37:32,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 5356 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:32,709 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:32,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-23 15:37:32,709 INFO L450 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-23 15:37:32,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-23 15:37:32,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:37:32,710 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 106 states. [2018-07-23 15:37:33,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:33,026 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2018-07-23 15:37:33,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-23 15:37:33,026 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-23 15:37:33,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:33,026 INFO L225 Difference]: With dead ends: 215 [2018-07-23 15:37:33,026 INFO L226 Difference]: Without dead ends: 212 [2018-07-23 15:37:33,027 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:37:33,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-23 15:37:33,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-23 15:37:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-23 15:37:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 213 transitions. [2018-07-23 15:37:33,251 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 213 transitions. Word has length 210 [2018-07-23 15:37:33,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:33,251 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 213 transitions. [2018-07-23 15:37:33,251 INFO L472 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-23 15:37:33,251 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 213 transitions. [2018-07-23 15:37:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-23 15:37:33,252 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:33,252 INFO L353 BasicCegarLoop]: trace histogram [103, 103, 1, 1, 1, 1, 1] [2018-07-23 15:37:33,252 INFO L414 AbstractCegarLoop]: === Iteration 310 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:33,252 INFO L82 PathProgramCache]: Analyzing trace with hash -199942495, now seen corresponding path program 307 times [2018-07-23 15:37:33,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:34,005 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:34,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-23 15:37:34,005 INFO L450 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-23 15:37:34,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-23 15:37:34,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=10921, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:37:34,006 INFO L87 Difference]: Start difference. First operand 212 states and 213 transitions. Second operand 106 states. [2018-07-23 15:37:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:35,593 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2018-07-23 15:37:35,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-23 15:37:35,593 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 211 [2018-07-23 15:37:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:35,594 INFO L225 Difference]: With dead ends: 320 [2018-07-23 15:37:35,594 INFO L226 Difference]: Without dead ends: 317 [2018-07-23 15:37:35,595 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=10921, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:37:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-23 15:37:35,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 214. [2018-07-23 15:37:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-23 15:37:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 216 transitions. [2018-07-23 15:37:35,828 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 216 transitions. Word has length 211 [2018-07-23 15:37:35,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:35,829 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 216 transitions. [2018-07-23 15:37:35,829 INFO L472 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-23 15:37:35,829 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 216 transitions. [2018-07-23 15:37:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-23 15:37:35,830 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:35,830 INFO L353 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1, 1, 1] [2018-07-23 15:37:35,830 INFO L414 AbstractCegarLoop]: === Iteration 311 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:35,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1903311571, now seen corresponding path program 308 times [2018-07-23 15:37:35,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 5460 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:36,328 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:36,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-23 15:37:36,328 INFO L450 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-23 15:37:36,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-23 15:37:36,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:37:36,329 INFO L87 Difference]: Start difference. First operand 214 states and 216 transitions. Second operand 107 states. [2018-07-23 15:37:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:37,093 INFO L93 Difference]: Finished difference Result 321 states and 323 transitions. [2018-07-23 15:37:37,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-23 15:37:37,093 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-23 15:37:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:37,094 INFO L225 Difference]: With dead ends: 321 [2018-07-23 15:37:37,094 INFO L226 Difference]: Without dead ends: 213 [2018-07-23 15:37:37,094 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:37:37,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-23 15:37:37,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-23 15:37:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-23 15:37:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-23 15:37:37,295 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 212 [2018-07-23 15:37:37,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:37,295 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-23 15:37:37,295 INFO L472 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-23 15:37:37,295 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-23 15:37:37,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-23 15:37:37,296 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:37,296 INFO L353 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1, 1, 1] [2018-07-23 15:37:37,296 INFO L414 AbstractCegarLoop]: === Iteration 312 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:37,296 INFO L82 PathProgramCache]: Analyzing trace with hash 317273287, now seen corresponding path program 309 times [2018-07-23 15:37:37,296 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 5460 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:37,761 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:37,761 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-23 15:37:37,761 INFO L450 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-23 15:37:37,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-23 15:37:37,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:37:37,762 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 107 states. [2018-07-23 15:37:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:38,034 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2018-07-23 15:37:38,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-23 15:37:38,034 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-23 15:37:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:38,035 INFO L225 Difference]: With dead ends: 217 [2018-07-23 15:37:38,035 INFO L226 Difference]: Without dead ends: 214 [2018-07-23 15:37:38,035 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:37:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-23 15:37:38,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-23 15:37:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-23 15:37:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2018-07-23 15:37:38,237 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 212 [2018-07-23 15:37:38,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:38,237 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2018-07-23 15:37:38,237 INFO L472 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-23 15:37:38,237 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2018-07-23 15:37:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-23 15:37:38,238 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:38,238 INFO L353 BasicCegarLoop]: trace histogram [104, 104, 1, 1, 1, 1, 1] [2018-07-23 15:37:38,238 INFO L414 AbstractCegarLoop]: === Iteration 313 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:38,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1245475783, now seen corresponding path program 310 times [2018-07-23 15:37:38,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:38,909 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:38,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-23 15:37:38,909 INFO L450 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-23 15:37:38,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-23 15:37:38,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:37:38,910 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 107 states. [2018-07-23 15:37:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:40,371 INFO L93 Difference]: Finished difference Result 323 states and 325 transitions. [2018-07-23 15:37:40,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-23 15:37:40,371 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 213 [2018-07-23 15:37:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:40,372 INFO L225 Difference]: With dead ends: 323 [2018-07-23 15:37:40,372 INFO L226 Difference]: Without dead ends: 320 [2018-07-23 15:37:40,373 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:37:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-23 15:37:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 216. [2018-07-23 15:37:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-23 15:37:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 218 transitions. [2018-07-23 15:37:40,615 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 218 transitions. Word has length 213 [2018-07-23 15:37:40,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:40,615 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 218 transitions. [2018-07-23 15:37:40,615 INFO L472 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-23 15:37:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 218 transitions. [2018-07-23 15:37:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-23 15:37:40,616 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:40,616 INFO L353 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1, 1, 1] [2018-07-23 15:37:40,616 INFO L414 AbstractCegarLoop]: === Iteration 314 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:40,616 INFO L82 PathProgramCache]: Analyzing trace with hash -45017913, now seen corresponding path program 311 times [2018-07-23 15:37:40,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 5565 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:41,080 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:41,080 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-23 15:37:41,080 INFO L450 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-23 15:37:41,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-23 15:37:41,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:37:41,081 INFO L87 Difference]: Start difference. First operand 216 states and 218 transitions. Second operand 108 states. [2018-07-23 15:37:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:41,770 INFO L93 Difference]: Finished difference Result 324 states and 326 transitions. [2018-07-23 15:37:41,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-23 15:37:41,770 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-23 15:37:41,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:41,771 INFO L225 Difference]: With dead ends: 324 [2018-07-23 15:37:41,771 INFO L226 Difference]: Without dead ends: 215 [2018-07-23 15:37:41,772 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:37:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-23 15:37:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-23 15:37:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-23 15:37:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-23 15:37:41,975 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 214 [2018-07-23 15:37:41,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:41,975 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-23 15:37:41,975 INFO L472 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-23 15:37:41,975 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-23 15:37:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-23 15:37:41,976 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:41,976 INFO L353 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1, 1, 1] [2018-07-23 15:37:41,976 INFO L414 AbstractCegarLoop]: === Iteration 315 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:41,976 INFO L82 PathProgramCache]: Analyzing trace with hash 73635949, now seen corresponding path program 312 times [2018-07-23 15:37:41,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 5565 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:42,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:42,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-23 15:37:42,456 INFO L450 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-23 15:37:42,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-23 15:37:42,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:37:42,457 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 108 states. [2018-07-23 15:37:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:42,743 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2018-07-23 15:37:42,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-23 15:37:42,744 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-23 15:37:42,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:42,744 INFO L225 Difference]: With dead ends: 219 [2018-07-23 15:37:42,744 INFO L226 Difference]: Without dead ends: 216 [2018-07-23 15:37:42,744 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:37:42,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-23 15:37:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-23 15:37:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-23 15:37:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2018-07-23 15:37:42,950 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 214 [2018-07-23 15:37:42,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:42,950 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2018-07-23 15:37:42,950 INFO L472 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-23 15:37:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2018-07-23 15:37:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-23 15:37:42,951 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:42,951 INFO L353 BasicCegarLoop]: trace histogram [105, 105, 1, 1, 1, 1, 1] [2018-07-23 15:37:42,951 INFO L414 AbstractCegarLoop]: === Iteration 316 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:42,951 INFO L82 PathProgramCache]: Analyzing trace with hash -2012314399, now seen corresponding path program 313 times [2018-07-23 15:37:42,951 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:43,639 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:43,639 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-23 15:37:43,639 INFO L450 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-23 15:37:43,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-23 15:37:43,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=11343, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:37:43,640 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand 108 states. [2018-07-23 15:37:45,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:45,264 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2018-07-23 15:37:45,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-23 15:37:45,264 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 215 [2018-07-23 15:37:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:45,264 INFO L225 Difference]: With dead ends: 326 [2018-07-23 15:37:45,265 INFO L226 Difference]: Without dead ends: 323 [2018-07-23 15:37:45,265 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=11343, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:37:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-23 15:37:45,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 218. [2018-07-23 15:37:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-23 15:37:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions. [2018-07-23 15:37:45,503 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 215 [2018-07-23 15:37:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:45,503 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 220 transitions. [2018-07-23 15:37:45,503 INFO L472 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-23 15:37:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 220 transitions. [2018-07-23 15:37:45,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-23 15:37:45,503 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:45,504 INFO L353 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1, 1, 1] [2018-07-23 15:37:45,504 INFO L414 AbstractCegarLoop]: === Iteration 317 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:45,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2042701549, now seen corresponding path program 314 times [2018-07-23 15:37:45,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 5671 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:46,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:46,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-23 15:37:46,046 INFO L450 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-23 15:37:46,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-23 15:37:46,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:37:46,047 INFO L87 Difference]: Start difference. First operand 218 states and 220 transitions. Second operand 109 states. [2018-07-23 15:37:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:46,846 INFO L93 Difference]: Finished difference Result 327 states and 329 transitions. [2018-07-23 15:37:46,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-23 15:37:46,846 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-23 15:37:46,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:46,847 INFO L225 Difference]: With dead ends: 327 [2018-07-23 15:37:46,847 INFO L226 Difference]: Without dead ends: 217 [2018-07-23 15:37:46,848 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:37:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-23 15:37:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-23 15:37:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-23 15:37:47,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-23 15:37:47,080 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 216 [2018-07-23 15:37:47,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:47,080 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-23 15:37:47,080 INFO L472 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-23 15:37:47,080 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-23 15:37:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-23 15:37:47,081 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:47,081 INFO L353 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1, 1, 1] [2018-07-23 15:37:47,081 INFO L414 AbstractCegarLoop]: === Iteration 318 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:47,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1426003975, now seen corresponding path program 315 times [2018-07-23 15:37:47,081 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 5671 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:47,647 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:47,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-23 15:37:47,647 INFO L450 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-23 15:37:47,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-23 15:37:47,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:37:47,648 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 109 states. [2018-07-23 15:37:47,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:47,968 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-07-23 15:37:47,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-23 15:37:47,969 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-23 15:37:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:47,969 INFO L225 Difference]: With dead ends: 221 [2018-07-23 15:37:47,969 INFO L226 Difference]: Without dead ends: 218 [2018-07-23 15:37:47,970 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:37:47,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-23 15:37:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-23 15:37:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-23 15:37:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2018-07-23 15:37:48,202 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 216 [2018-07-23 15:37:48,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:48,202 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2018-07-23 15:37:48,202 INFO L472 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-23 15:37:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2018-07-23 15:37:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-23 15:37:48,203 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:48,203 INFO L353 BasicCegarLoop]: trace histogram [106, 106, 1, 1, 1, 1, 1] [2018-07-23 15:37:48,203 INFO L414 AbstractCegarLoop]: === Iteration 319 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:48,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1256388743, now seen corresponding path program 316 times [2018-07-23 15:37:48,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:49,000 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:49,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-23 15:37:49,001 INFO L450 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-23 15:37:49,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-23 15:37:49,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:37:49,001 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand 109 states. [2018-07-23 15:37:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:50,658 INFO L93 Difference]: Finished difference Result 329 states and 331 transitions. [2018-07-23 15:37:50,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-23 15:37:50,659 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 217 [2018-07-23 15:37:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:50,659 INFO L225 Difference]: With dead ends: 329 [2018-07-23 15:37:50,659 INFO L226 Difference]: Without dead ends: 326 [2018-07-23 15:37:50,660 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:37:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-07-23 15:37:50,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 220. [2018-07-23 15:37:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-23 15:37:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 222 transitions. [2018-07-23 15:37:50,883 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 222 transitions. Word has length 217 [2018-07-23 15:37:50,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:50,884 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 222 transitions. [2018-07-23 15:37:50,884 INFO L472 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-23 15:37:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 222 transitions. [2018-07-23 15:37:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-23 15:37:50,884 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:50,884 INFO L353 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1, 1, 1] [2018-07-23 15:37:50,884 INFO L414 AbstractCegarLoop]: === Iteration 320 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:50,885 INFO L82 PathProgramCache]: Analyzing trace with hash 293283847, now seen corresponding path program 317 times [2018-07-23 15:37:50,885 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 5778 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:51,367 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:51,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-23 15:37:51,368 INFO L450 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-23 15:37:51,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-23 15:37:51,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:37:51,369 INFO L87 Difference]: Start difference. First operand 220 states and 222 transitions. Second operand 110 states. [2018-07-23 15:37:52,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:52,082 INFO L93 Difference]: Finished difference Result 330 states and 332 transitions. [2018-07-23 15:37:52,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-23 15:37:52,082 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-23 15:37:52,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:52,083 INFO L225 Difference]: With dead ends: 330 [2018-07-23 15:37:52,083 INFO L226 Difference]: Without dead ends: 219 [2018-07-23 15:37:52,084 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:37:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-23 15:37:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-23 15:37:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-23 15:37:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-23 15:37:52,330 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 218 [2018-07-23 15:37:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:52,330 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-23 15:37:52,330 INFO L472 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-23 15:37:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-23 15:37:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-23 15:37:52,330 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:52,331 INFO L353 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1, 1, 1] [2018-07-23 15:37:52,331 INFO L414 AbstractCegarLoop]: === Iteration 321 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:52,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1644471763, now seen corresponding path program 318 times [2018-07-23 15:37:52,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 5778 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:52,914 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:52,914 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-23 15:37:52,915 INFO L450 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-23 15:37:52,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-23 15:37:52,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:37:52,916 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 110 states. [2018-07-23 15:37:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:53,228 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2018-07-23 15:37:53,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-23 15:37:53,229 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-23 15:37:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:53,229 INFO L225 Difference]: With dead ends: 223 [2018-07-23 15:37:53,229 INFO L226 Difference]: Without dead ends: 220 [2018-07-23 15:37:53,230 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:37:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-23 15:37:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-23 15:37:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-23 15:37:53,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 221 transitions. [2018-07-23 15:37:53,454 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 221 transitions. Word has length 218 [2018-07-23 15:37:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:53,454 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 221 transitions. [2018-07-23 15:37:53,454 INFO L472 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-23 15:37:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 221 transitions. [2018-07-23 15:37:53,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-23 15:37:53,455 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:53,455 INFO L353 BasicCegarLoop]: trace histogram [107, 107, 1, 1, 1, 1, 1] [2018-07-23 15:37:53,455 INFO L414 AbstractCegarLoop]: === Iteration 322 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:53,455 INFO L82 PathProgramCache]: Analyzing trace with hash 560921377, now seen corresponding path program 319 times [2018-07-23 15:37:53,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:54,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:54,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-23 15:37:54,173 INFO L450 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-23 15:37:54,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-23 15:37:54,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=11773, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:37:54,173 INFO L87 Difference]: Start difference. First operand 220 states and 221 transitions. Second operand 110 states. [2018-07-23 15:37:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:55,797 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2018-07-23 15:37:55,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-23 15:37:55,798 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 219 [2018-07-23 15:37:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:55,798 INFO L225 Difference]: With dead ends: 332 [2018-07-23 15:37:55,798 INFO L226 Difference]: Without dead ends: 329 [2018-07-23 15:37:55,799 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=11773, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:37:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-23 15:37:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 222. [2018-07-23 15:37:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-23 15:37:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 224 transitions. [2018-07-23 15:37:56,024 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 224 transitions. Word has length 219 [2018-07-23 15:37:56,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:56,024 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 224 transitions. [2018-07-23 15:37:56,024 INFO L472 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-23 15:37:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 224 transitions. [2018-07-23 15:37:56,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-23 15:37:56,025 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:56,025 INFO L353 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1, 1, 1] [2018-07-23 15:37:56,025 INFO L414 AbstractCegarLoop]: === Iteration 323 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:56,025 INFO L82 PathProgramCache]: Analyzing trace with hash 208631981, now seen corresponding path program 320 times [2018-07-23 15:37:56,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 5886 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:56,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:56,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-23 15:37:56,515 INFO L450 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-23 15:37:56,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-23 15:37:56,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:37:56,516 INFO L87 Difference]: Start difference. First operand 222 states and 224 transitions. Second operand 111 states. [2018-07-23 15:37:57,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:57,084 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2018-07-23 15:37:57,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-23 15:37:57,084 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-23 15:37:57,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:57,085 INFO L225 Difference]: With dead ends: 333 [2018-07-23 15:37:57,085 INFO L226 Difference]: Without dead ends: 221 [2018-07-23 15:37:57,085 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:37:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-23 15:37:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-23 15:37:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-23 15:37:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-23 15:37:57,304 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 220 [2018-07-23 15:37:57,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:57,304 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-23 15:37:57,304 INFO L472 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-23 15:37:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-23 15:37:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-23 15:37:57,305 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:57,305 INFO L353 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1, 1, 1] [2018-07-23 15:37:57,305 INFO L414 AbstractCegarLoop]: === Iteration 324 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:57,305 INFO L82 PathProgramCache]: Analyzing trace with hash 267750215, now seen corresponding path program 321 times [2018-07-23 15:37:57,305 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 5886 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:57,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:57,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-23 15:37:57,817 INFO L450 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-23 15:37:57,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-23 15:37:57,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:37:57,818 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 111 states. [2018-07-23 15:37:58,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:58,084 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-07-23 15:37:58,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-23 15:37:58,084 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-23 15:37:58,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:58,085 INFO L225 Difference]: With dead ends: 225 [2018-07-23 15:37:58,085 INFO L226 Difference]: Without dead ends: 222 [2018-07-23 15:37:58,085 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:37:58,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-23 15:37:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-23 15:37:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-23 15:37:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2018-07-23 15:37:58,301 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 220 [2018-07-23 15:37:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:58,301 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2018-07-23 15:37:58,301 INFO L472 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-23 15:37:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2018-07-23 15:37:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-23 15:37:58,302 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:58,302 INFO L353 BasicCegarLoop]: trace histogram [108, 108, 1, 1, 1, 1, 1] [2018-07-23 15:37:58,302 INFO L414 AbstractCegarLoop]: === Iteration 325 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:37:58,302 INFO L82 PathProgramCache]: Analyzing trace with hash -289739449, now seen corresponding path program 322 times [2018-07-23 15:37:58,302 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:59,030 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:59,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-23 15:37:59,030 INFO L450 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-23 15:37:59,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-23 15:37:59,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:37:59,031 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 111 states. [2018-07-23 15:38:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:00,610 INFO L93 Difference]: Finished difference Result 335 states and 337 transitions. [2018-07-23 15:38:00,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-23 15:38:00,611 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 221 [2018-07-23 15:38:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:00,611 INFO L225 Difference]: With dead ends: 335 [2018-07-23 15:38:00,611 INFO L226 Difference]: Without dead ends: 332 [2018-07-23 15:38:00,612 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:38:00,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-07-23 15:38:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 224. [2018-07-23 15:38:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-23 15:38:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions. [2018-07-23 15:38:00,835 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 221 [2018-07-23 15:38:00,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:00,835 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 226 transitions. [2018-07-23 15:38:00,835 INFO L472 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-23 15:38:00,835 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 226 transitions. [2018-07-23 15:38:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-23 15:38:00,836 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:00,836 INFO L353 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1, 1, 1] [2018-07-23 15:38:00,836 INFO L414 AbstractCegarLoop]: === Iteration 326 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:00,836 INFO L82 PathProgramCache]: Analyzing trace with hash -392049849, now seen corresponding path program 323 times [2018-07-23 15:38:00,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 5995 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:01,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:01,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-23 15:38:01,344 INFO L450 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-23 15:38:01,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-23 15:38:01,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:38:01,345 INFO L87 Difference]: Start difference. First operand 224 states and 226 transitions. Second operand 112 states. [2018-07-23 15:38:02,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:02,053 INFO L93 Difference]: Finished difference Result 336 states and 338 transitions. [2018-07-23 15:38:02,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-23 15:38:02,053 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-23 15:38:02,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:02,053 INFO L225 Difference]: With dead ends: 336 [2018-07-23 15:38:02,053 INFO L226 Difference]: Without dead ends: 223 [2018-07-23 15:38:02,054 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:38:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-23 15:38:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-23 15:38:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-23 15:38:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-23 15:38:02,277 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 222 [2018-07-23 15:38:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:02,277 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-23 15:38:02,277 INFO L472 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-23 15:38:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-23 15:38:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-23 15:38:02,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:02,278 INFO L353 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1, 1, 1] [2018-07-23 15:38:02,278 INFO L414 AbstractCegarLoop]: === Iteration 327 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1440615405, now seen corresponding path program 324 times [2018-07-23 15:38:02,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 5995 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:02,784 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:02,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-23 15:38:02,784 INFO L450 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-23 15:38:02,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-23 15:38:02,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:38:02,785 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 112 states. [2018-07-23 15:38:03,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:03,089 INFO L93 Difference]: Finished difference Result 227 states and 228 transitions. [2018-07-23 15:38:03,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-23 15:38:03,089 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-23 15:38:03,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:03,089 INFO L225 Difference]: With dead ends: 227 [2018-07-23 15:38:03,090 INFO L226 Difference]: Without dead ends: 224 [2018-07-23 15:38:03,090 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:38:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-23 15:38:03,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-23 15:38:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-23 15:38:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2018-07-23 15:38:03,310 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 222 [2018-07-23 15:38:03,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:03,310 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2018-07-23 15:38:03,310 INFO L472 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-23 15:38:03,310 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2018-07-23 15:38:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-23 15:38:03,311 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:03,311 INFO L353 BasicCegarLoop]: trace histogram [109, 109, 1, 1, 1, 1, 1] [2018-07-23 15:38:03,311 INFO L414 AbstractCegarLoop]: === Iteration 328 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:03,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1709343073, now seen corresponding path program 325 times [2018-07-23 15:38:03,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:04,061 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:04,061 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-23 15:38:04,062 INFO L450 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-23 15:38:04,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-23 15:38:04,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=12211, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:38:04,062 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand 112 states. [2018-07-23 15:38:05,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:05,731 INFO L93 Difference]: Finished difference Result 338 states and 340 transitions. [2018-07-23 15:38:05,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-23 15:38:05,731 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 223 [2018-07-23 15:38:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:05,732 INFO L225 Difference]: With dead ends: 338 [2018-07-23 15:38:05,732 INFO L226 Difference]: Without dead ends: 335 [2018-07-23 15:38:05,733 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=12211, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:38:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-23 15:38:05,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 226. [2018-07-23 15:38:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-23 15:38:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 228 transitions. [2018-07-23 15:38:05,966 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 228 transitions. Word has length 223 [2018-07-23 15:38:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:05,966 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 228 transitions. [2018-07-23 15:38:05,966 INFO L472 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-23 15:38:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 228 transitions. [2018-07-23 15:38:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-23 15:38:05,967 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:05,967 INFO L353 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1, 1, 1] [2018-07-23 15:38:05,967 INFO L414 AbstractCegarLoop]: === Iteration 329 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:05,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1449966189, now seen corresponding path program 326 times [2018-07-23 15:38:05,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 6105 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:06,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:06,469 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-23 15:38:06,469 INFO L450 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-23 15:38:06,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-23 15:38:06,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:38:06,470 INFO L87 Difference]: Start difference. First operand 226 states and 228 transitions. Second operand 113 states. [2018-07-23 15:38:07,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:07,075 INFO L93 Difference]: Finished difference Result 339 states and 341 transitions. [2018-07-23 15:38:07,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-23 15:38:07,075 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-23 15:38:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:07,076 INFO L225 Difference]: With dead ends: 339 [2018-07-23 15:38:07,076 INFO L226 Difference]: Without dead ends: 225 [2018-07-23 15:38:07,076 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:38:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-23 15:38:07,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-23 15:38:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-23 15:38:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-23 15:38:07,299 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 224 [2018-07-23 15:38:07,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:07,299 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-23 15:38:07,299 INFO L472 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-23 15:38:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-23 15:38:07,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-23 15:38:07,300 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:07,300 INFO L353 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1, 1, 1] [2018-07-23 15:38:07,300 INFO L414 AbstractCegarLoop]: === Iteration 330 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:07,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1866953081, now seen corresponding path program 327 times [2018-07-23 15:38:07,300 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 6105 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:07,852 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:07,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-23 15:38:07,852 INFO L450 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-23 15:38:07,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-23 15:38:07,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:38:07,853 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 113 states. [2018-07-23 15:38:08,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:08,196 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-07-23 15:38:08,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-23 15:38:08,196 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-23 15:38:08,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:08,197 INFO L225 Difference]: With dead ends: 229 [2018-07-23 15:38:08,197 INFO L226 Difference]: Without dead ends: 226 [2018-07-23 15:38:08,197 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:38:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-23 15:38:08,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-23 15:38:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-23 15:38:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2018-07-23 15:38:08,422 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 224 [2018-07-23 15:38:08,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:08,422 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2018-07-23 15:38:08,422 INFO L472 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-23 15:38:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2018-07-23 15:38:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-23 15:38:08,423 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:08,423 INFO L353 BasicCegarLoop]: trace histogram [110, 110, 1, 1, 1, 1, 1] [2018-07-23 15:38:08,423 INFO L414 AbstractCegarLoop]: === Iteration 331 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:08,423 INFO L82 PathProgramCache]: Analyzing trace with hash -2041032185, now seen corresponding path program 328 times [2018-07-23 15:38:08,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:09,195 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:09,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-23 15:38:09,195 INFO L450 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-23 15:38:09,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-23 15:38:09,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=12433, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:38:09,196 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 113 states. [2018-07-23 15:38:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:10,842 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2018-07-23 15:38:10,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-23 15:38:10,842 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 225 [2018-07-23 15:38:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:10,842 INFO L225 Difference]: With dead ends: 341 [2018-07-23 15:38:10,842 INFO L226 Difference]: Without dead ends: 338 [2018-07-23 15:38:10,843 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=12433, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:38:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-07-23 15:38:11,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 228. [2018-07-23 15:38:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-23 15:38:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 230 transitions. [2018-07-23 15:38:11,077 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 230 transitions. Word has length 225 [2018-07-23 15:38:11,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:11,077 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 230 transitions. [2018-07-23 15:38:11,077 INFO L472 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-23 15:38:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 230 transitions. [2018-07-23 15:38:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-23 15:38:11,078 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:11,078 INFO L353 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1, 1, 1] [2018-07-23 15:38:11,078 INFO L414 AbstractCegarLoop]: === Iteration 332 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:11,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1152450183, now seen corresponding path program 329 times [2018-07-23 15:38:11,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 6216 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:11,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:11,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-23 15:38:11,621 INFO L450 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-23 15:38:11,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-23 15:38:11,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:38:11,623 INFO L87 Difference]: Start difference. First operand 228 states and 230 transitions. Second operand 114 states. [2018-07-23 15:38:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:12,234 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2018-07-23 15:38:12,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-23 15:38:12,234 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-23 15:38:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:12,235 INFO L225 Difference]: With dead ends: 342 [2018-07-23 15:38:12,235 INFO L226 Difference]: Without dead ends: 227 [2018-07-23 15:38:12,235 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:38:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-23 15:38:12,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-23 15:38:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-23 15:38:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-23 15:38:12,462 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 226 [2018-07-23 15:38:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:12,462 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-23 15:38:12,462 INFO L472 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-23 15:38:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-23 15:38:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-23 15:38:12,463 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:12,463 INFO L353 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1, 1, 1] [2018-07-23 15:38:12,463 INFO L414 AbstractCegarLoop]: === Iteration 333 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:12,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1407167917, now seen corresponding path program 330 times [2018-07-23 15:38:12,463 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 6216 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:13,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:13,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-23 15:38:13,029 INFO L450 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-23 15:38:13,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-23 15:38:13,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:38:13,030 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 114 states. [2018-07-23 15:38:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:13,320 INFO L93 Difference]: Finished difference Result 231 states and 232 transitions. [2018-07-23 15:38:13,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-23 15:38:13,321 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-23 15:38:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:13,321 INFO L225 Difference]: With dead ends: 231 [2018-07-23 15:38:13,321 INFO L226 Difference]: Without dead ends: 228 [2018-07-23 15:38:13,322 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:38:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-23 15:38:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-23 15:38:13,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-23 15:38:13,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 229 transitions. [2018-07-23 15:38:13,549 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 229 transitions. Word has length 226 [2018-07-23 15:38:13,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:13,549 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 229 transitions. [2018-07-23 15:38:13,549 INFO L472 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-23 15:38:13,549 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 229 transitions. [2018-07-23 15:38:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-23 15:38:13,550 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:13,550 INFO L353 BasicCegarLoop]: trace histogram [111, 111, 1, 1, 1, 1, 1] [2018-07-23 15:38:13,550 INFO L414 AbstractCegarLoop]: === Iteration 334 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:13,550 INFO L82 PathProgramCache]: Analyzing trace with hash 672470945, now seen corresponding path program 331 times [2018-07-23 15:38:13,550 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:14,327 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:14,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-23 15:38:14,328 INFO L450 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-23 15:38:14,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-23 15:38:14,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=12657, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:38:14,328 INFO L87 Difference]: Start difference. First operand 228 states and 229 transitions. Second operand 114 states. [2018-07-23 15:38:15,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:15,965 INFO L93 Difference]: Finished difference Result 344 states and 346 transitions. [2018-07-23 15:38:15,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-23 15:38:15,965 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 227 [2018-07-23 15:38:15,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:15,965 INFO L225 Difference]: With dead ends: 344 [2018-07-23 15:38:15,965 INFO L226 Difference]: Without dead ends: 341 [2018-07-23 15:38:15,966 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=12657, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:38:15,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-23 15:38:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 230. [2018-07-23 15:38:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-23 15:38:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 232 transitions. [2018-07-23 15:38:16,202 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 232 transitions. Word has length 227 [2018-07-23 15:38:16,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:16,202 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 232 transitions. [2018-07-23 15:38:16,202 INFO L472 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-23 15:38:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 232 transitions. [2018-07-23 15:38:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-23 15:38:16,203 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:16,203 INFO L353 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1, 1, 1] [2018-07-23 15:38:16,203 INFO L414 AbstractCegarLoop]: === Iteration 335 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash -628298707, now seen corresponding path program 332 times [2018-07-23 15:38:16,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 6328 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:16,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:16,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-23 15:38:16,757 INFO L450 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-23 15:38:16,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-23 15:38:16,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:38:16,758 INFO L87 Difference]: Start difference. First operand 230 states and 232 transitions. Second operand 115 states. [2018-07-23 15:38:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:17,423 INFO L93 Difference]: Finished difference Result 345 states and 347 transitions. [2018-07-23 15:38:17,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-23 15:38:17,423 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-23 15:38:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:17,424 INFO L225 Difference]: With dead ends: 345 [2018-07-23 15:38:17,424 INFO L226 Difference]: Without dead ends: 229 [2018-07-23 15:38:17,424 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:38:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-23 15:38:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-23 15:38:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-23 15:38:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-23 15:38:17,681 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 228 [2018-07-23 15:38:17,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:17,681 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-23 15:38:17,681 INFO L472 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-23 15:38:17,681 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-23 15:38:17,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-23 15:38:17,682 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:17,682 INFO L353 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1, 1, 1] [2018-07-23 15:38:17,682 INFO L414 AbstractCegarLoop]: === Iteration 336 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1321983545, now seen corresponding path program 333 times [2018-07-23 15:38:17,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 6328 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:18,302 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:18,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-23 15:38:18,303 INFO L450 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-23 15:38:18,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-23 15:38:18,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:38:18,304 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 115 states. [2018-07-23 15:38:18,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:18,643 INFO L93 Difference]: Finished difference Result 233 states and 234 transitions. [2018-07-23 15:38:18,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-23 15:38:18,643 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-23 15:38:18,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:18,644 INFO L225 Difference]: With dead ends: 233 [2018-07-23 15:38:18,644 INFO L226 Difference]: Without dead ends: 230 [2018-07-23 15:38:18,644 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:38:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-23 15:38:18,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-23 15:38:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-23 15:38:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2018-07-23 15:38:18,904 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 228 [2018-07-23 15:38:18,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:18,904 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 231 transitions. [2018-07-23 15:38:18,904 INFO L472 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-23 15:38:18,904 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 231 transitions. [2018-07-23 15:38:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-23 15:38:18,905 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:18,905 INFO L353 BasicCegarLoop]: trace histogram [112, 112, 1, 1, 1, 1, 1] [2018-07-23 15:38:18,905 INFO L414 AbstractCegarLoop]: === Iteration 337 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:18,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1968121543, now seen corresponding path program 334 times [2018-07-23 15:38:18,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:19,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:19,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-23 15:38:19,839 INFO L450 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-23 15:38:19,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-23 15:38:19,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=12883, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:38:19,840 INFO L87 Difference]: Start difference. First operand 230 states and 231 transitions. Second operand 115 states. [2018-07-23 15:38:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:21,704 INFO L93 Difference]: Finished difference Result 347 states and 349 transitions. [2018-07-23 15:38:21,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-23 15:38:21,704 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 229 [2018-07-23 15:38:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:21,705 INFO L225 Difference]: With dead ends: 347 [2018-07-23 15:38:21,705 INFO L226 Difference]: Without dead ends: 344 [2018-07-23 15:38:21,705 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=12883, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:38:21,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-07-23 15:38:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 232. [2018-07-23 15:38:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-23 15:38:21,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 234 transitions. [2018-07-23 15:38:21,945 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 234 transitions. Word has length 229 [2018-07-23 15:38:21,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:21,945 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 234 transitions. [2018-07-23 15:38:21,945 INFO L472 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-23 15:38:21,945 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 234 transitions. [2018-07-23 15:38:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-23 15:38:21,946 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:21,946 INFO L353 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1, 1, 1] [2018-07-23 15:38:21,946 INFO L414 AbstractCegarLoop]: === Iteration 338 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:21,946 INFO L82 PathProgramCache]: Analyzing trace with hash 882164167, now seen corresponding path program 335 times [2018-07-23 15:38:21,946 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 6441 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:22,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:22,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-23 15:38:22,520 INFO L450 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-23 15:38:22,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-23 15:38:22,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:38:22,521 INFO L87 Difference]: Start difference. First operand 232 states and 234 transitions. Second operand 116 states. [2018-07-23 15:38:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:23,205 INFO L93 Difference]: Finished difference Result 348 states and 350 transitions. [2018-07-23 15:38:23,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-23 15:38:23,205 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-23 15:38:23,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:23,205 INFO L225 Difference]: With dead ends: 348 [2018-07-23 15:38:23,205 INFO L226 Difference]: Without dead ends: 231 [2018-07-23 15:38:23,206 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:38:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-23 15:38:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-23 15:38:23,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-23 15:38:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-23 15:38:23,441 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 230 [2018-07-23 15:38:23,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:23,441 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-23 15:38:23,441 INFO L472 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-23 15:38:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-23 15:38:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-23 15:38:23,441 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:23,441 INFO L353 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1, 1, 1] [2018-07-23 15:38:23,442 INFO L414 AbstractCegarLoop]: === Iteration 339 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:23,442 INFO L82 PathProgramCache]: Analyzing trace with hash 852770669, now seen corresponding path program 336 times [2018-07-23 15:38:23,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 6441 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:24,038 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:24,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-23 15:38:24,038 INFO L450 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-23 15:38:24,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-23 15:38:24,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:38:24,039 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 116 states. [2018-07-23 15:38:24,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:24,338 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2018-07-23 15:38:24,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-23 15:38:24,339 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-23 15:38:24,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:24,339 INFO L225 Difference]: With dead ends: 235 [2018-07-23 15:38:24,339 INFO L226 Difference]: Without dead ends: 232 [2018-07-23 15:38:24,340 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:38:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-23 15:38:24,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-23 15:38:24,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-23 15:38:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2018-07-23 15:38:24,576 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 230 [2018-07-23 15:38:24,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:24,576 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2018-07-23 15:38:24,576 INFO L472 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-23 15:38:24,576 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2018-07-23 15:38:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-23 15:38:24,576 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:24,577 INFO L353 BasicCegarLoop]: trace histogram [113, 113, 1, 1, 1, 1, 1] [2018-07-23 15:38:24,577 INFO L414 AbstractCegarLoop]: === Iteration 340 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash 666025441, now seen corresponding path program 337 times [2018-07-23 15:38:24,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:25,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:25,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-23 15:38:25,465 INFO L450 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-23 15:38:25,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-23 15:38:25,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=13111, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:38:25,466 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand 116 states. [2018-07-23 15:38:27,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:27,356 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2018-07-23 15:38:27,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-23 15:38:27,356 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 231 [2018-07-23 15:38:27,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:27,357 INFO L225 Difference]: With dead ends: 350 [2018-07-23 15:38:27,357 INFO L226 Difference]: Without dead ends: 347 [2018-07-23 15:38:27,358 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=13111, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:38:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-23 15:38:27,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 234. [2018-07-23 15:38:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-23 15:38:27,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 236 transitions. [2018-07-23 15:38:27,632 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 236 transitions. Word has length 231 [2018-07-23 15:38:27,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:27,632 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 236 transitions. [2018-07-23 15:38:27,632 INFO L472 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-23 15:38:27,632 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 236 transitions. [2018-07-23 15:38:27,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-23 15:38:27,633 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:27,633 INFO L353 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1, 1, 1] [2018-07-23 15:38:27,633 INFO L414 AbstractCegarLoop]: === Iteration 341 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:27,633 INFO L82 PathProgramCache]: Analyzing trace with hash -828109331, now seen corresponding path program 338 times [2018-07-23 15:38:27,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 6555 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:28,321 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:28,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-23 15:38:28,322 INFO L450 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-23 15:38:28,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-23 15:38:28,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:38:28,323 INFO L87 Difference]: Start difference. First operand 234 states and 236 transitions. Second operand 117 states. [2018-07-23 15:38:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:29,170 INFO L93 Difference]: Finished difference Result 351 states and 353 transitions. [2018-07-23 15:38:29,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-23 15:38:29,170 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-23 15:38:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:29,171 INFO L225 Difference]: With dead ends: 351 [2018-07-23 15:38:29,171 INFO L226 Difference]: Without dead ends: 233 [2018-07-23 15:38:29,171 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:38:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-23 15:38:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-23 15:38:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-23 15:38:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-23 15:38:29,429 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 232 [2018-07-23 15:38:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:29,429 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-23 15:38:29,429 INFO L472 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-23 15:38:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-23 15:38:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-23 15:38:29,430 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:29,430 INFO L353 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1, 1, 1] [2018-07-23 15:38:29,430 INFO L414 AbstractCegarLoop]: === Iteration 342 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:29,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1739307769, now seen corresponding path program 339 times [2018-07-23 15:38:29,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 6555 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:30,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:30,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-23 15:38:30,059 INFO L450 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-23 15:38:30,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-23 15:38:30,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:38:30,060 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 117 states. [2018-07-23 15:38:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:30,389 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-07-23 15:38:30,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-23 15:38:30,389 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-23 15:38:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:30,390 INFO L225 Difference]: With dead ends: 237 [2018-07-23 15:38:30,390 INFO L226 Difference]: Without dead ends: 234 [2018-07-23 15:38:30,390 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:38:30,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-23 15:38:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-23 15:38:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-23 15:38:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2018-07-23 15:38:30,633 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 232 [2018-07-23 15:38:30,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:30,634 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2018-07-23 15:38:30,634 INFO L472 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-23 15:38:30,634 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2018-07-23 15:38:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-23 15:38:30,634 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:30,634 INFO L353 BasicCegarLoop]: trace histogram [114, 114, 1, 1, 1, 1, 1] [2018-07-23 15:38:30,634 INFO L414 AbstractCegarLoop]: === Iteration 343 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:30,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1915972487, now seen corresponding path program 340 times [2018-07-23 15:38:30,635 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:31,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:31,497 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-23 15:38:31,497 INFO L450 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-23 15:38:31,497 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-23 15:38:31,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=13341, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:38:31,498 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 117 states. [2018-07-23 15:38:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:33,284 INFO L93 Difference]: Finished difference Result 353 states and 355 transitions. [2018-07-23 15:38:33,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-23 15:38:33,284 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 233 [2018-07-23 15:38:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:33,285 INFO L225 Difference]: With dead ends: 353 [2018-07-23 15:38:33,285 INFO L226 Difference]: Without dead ends: 350 [2018-07-23 15:38:33,285 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=13341, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:38:33,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-07-23 15:38:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 236. [2018-07-23 15:38:33,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-23 15:38:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 238 transitions. [2018-07-23 15:38:33,546 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 238 transitions. Word has length 233 [2018-07-23 15:38:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:33,546 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 238 transitions. [2018-07-23 15:38:33,546 INFO L472 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-23 15:38:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 238 transitions. [2018-07-23 15:38:33,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-23 15:38:33,547 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:33,547 INFO L353 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1, 1, 1] [2018-07-23 15:38:33,547 INFO L414 AbstractCegarLoop]: === Iteration 344 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:33,547 INFO L82 PathProgramCache]: Analyzing trace with hash -734456569, now seen corresponding path program 341 times [2018-07-23 15:38:33,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 13225 backedges. 6670 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:34,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:34,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-23 15:38:34,159 INFO L450 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-23 15:38:34,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-23 15:38:34,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:38:34,161 INFO L87 Difference]: Start difference. First operand 236 states and 238 transitions. Second operand 118 states. [2018-07-23 15:38:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:34,747 INFO L93 Difference]: Finished difference Result 354 states and 356 transitions. [2018-07-23 15:38:34,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-23 15:38:34,748 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-23 15:38:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:34,748 INFO L225 Difference]: With dead ends: 354 [2018-07-23 15:38:34,748 INFO L226 Difference]: Without dead ends: 235 [2018-07-23 15:38:34,749 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:38:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-23 15:38:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-23 15:38:34,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-23 15:38:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-23 15:38:34,995 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 234 [2018-07-23 15:38:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:34,995 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-23 15:38:34,995 INFO L472 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-23 15:38:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-23 15:38:34,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-23 15:38:34,996 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:34,996 INFO L353 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1, 1, 1] [2018-07-23 15:38:34,996 INFO L414 AbstractCegarLoop]: === Iteration 345 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:34,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1083162925, now seen corresponding path program 342 times [2018-07-23 15:38:34,996 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13225 backedges. 6670 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:35,643 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:35,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-23 15:38:35,644 INFO L450 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-23 15:38:35,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-23 15:38:35,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:38:35,645 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 118 states. [2018-07-23 15:38:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:36,019 INFO L93 Difference]: Finished difference Result 239 states and 240 transitions. [2018-07-23 15:38:36,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-23 15:38:36,019 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-23 15:38:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:36,020 INFO L225 Difference]: With dead ends: 239 [2018-07-23 15:38:36,020 INFO L226 Difference]: Without dead ends: 236 [2018-07-23 15:38:36,020 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:38:36,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-23 15:38:36,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-23 15:38:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-23 15:38:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2018-07-23 15:38:36,268 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 234 [2018-07-23 15:38:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:36,268 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2018-07-23 15:38:36,268 INFO L472 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-23 15:38:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2018-07-23 15:38:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-23 15:38:36,269 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:36,269 INFO L353 BasicCegarLoop]: trace histogram [115, 115, 1, 1, 1, 1, 1] [2018-07-23 15:38:36,269 INFO L414 AbstractCegarLoop]: === Iteration 346 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash -781749215, now seen corresponding path program 343 times [2018-07-23 15:38:36,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:37,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:37,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-23 15:38:37,140 INFO L450 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-23 15:38:37,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-23 15:38:37,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=13573, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:38:37,141 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand 118 states. [2018-07-23 15:38:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:38,905 INFO L93 Difference]: Finished difference Result 356 states and 358 transitions. [2018-07-23 15:38:38,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-23 15:38:38,905 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 235 [2018-07-23 15:38:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:38,906 INFO L225 Difference]: With dead ends: 356 [2018-07-23 15:38:38,906 INFO L226 Difference]: Without dead ends: 353 [2018-07-23 15:38:38,906 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=13573, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:38:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-23 15:38:39,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 238. [2018-07-23 15:38:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-23 15:38:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 240 transitions. [2018-07-23 15:38:39,162 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 240 transitions. Word has length 235 [2018-07-23 15:38:39,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:39,162 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 240 transitions. [2018-07-23 15:38:39,163 INFO L472 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-23 15:38:39,163 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 240 transitions. [2018-07-23 15:38:39,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-23 15:38:39,163 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:39,163 INFO L353 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1, 1, 1] [2018-07-23 15:38:39,163 INFO L414 AbstractCegarLoop]: === Iteration 347 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:39,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1535516589, now seen corresponding path program 344 times [2018-07-23 15:38:39,164 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 6786 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:39,769 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:39,769 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-23 15:38:39,769 INFO L450 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-23 15:38:39,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-23 15:38:39,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:38:39,770 INFO L87 Difference]: Start difference. First operand 238 states and 240 transitions. Second operand 119 states. [2018-07-23 15:38:40,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:40,496 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2018-07-23 15:38:40,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-23 15:38:40,496 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-07-23 15:38:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:40,497 INFO L225 Difference]: With dead ends: 357 [2018-07-23 15:38:40,497 INFO L226 Difference]: Without dead ends: 237 [2018-07-23 15:38:40,497 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:38:40,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-23 15:38:40,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-23 15:38:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-23 15:38:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-23 15:38:40,747 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 236 [2018-07-23 15:38:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:40,747 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-23 15:38:40,747 INFO L472 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-23 15:38:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-23 15:38:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-23 15:38:40,748 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:40,748 INFO L353 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1, 1, 1] [2018-07-23 15:38:40,748 INFO L414 AbstractCegarLoop]: === Iteration 348 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:40,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2047146055, now seen corresponding path program 345 times [2018-07-23 15:38:40,748 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 6786 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:41,396 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:41,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-23 15:38:41,397 INFO L450 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-23 15:38:41,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-23 15:38:41,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:38:41,398 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 119 states. [2018-07-23 15:38:41,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:41,736 INFO L93 Difference]: Finished difference Result 241 states and 242 transitions. [2018-07-23 15:38:41,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-23 15:38:41,736 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-07-23 15:38:41,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:41,736 INFO L225 Difference]: With dead ends: 241 [2018-07-23 15:38:41,736 INFO L226 Difference]: Without dead ends: 238 [2018-07-23 15:38:41,737 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:38:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-23 15:38:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-23 15:38:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-23 15:38:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 239 transitions. [2018-07-23 15:38:41,987 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 239 transitions. Word has length 236 [2018-07-23 15:38:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:41,987 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 239 transitions. [2018-07-23 15:38:41,987 INFO L472 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-23 15:38:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 239 transitions. [2018-07-23 15:38:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-23 15:38:41,988 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:41,988 INFO L353 BasicCegarLoop]: trace histogram [116, 116, 1, 1, 1, 1, 1] [2018-07-23 15:38:41,988 INFO L414 AbstractCegarLoop]: === Iteration 349 === [MainErr0AssertViolationASSERT, MainErr1AssertViolationASSERT]=== [2018-07-23 15:38:41,988 INFO L82 PathProgramCache]: Analyzing trace with hash -963043257, now seen corresponding path program 346 times [2018-07-23 15:38:41,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:42,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:42,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-23 15:38:42,803 INFO L450 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-23 15:38:42,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-23 15:38:42,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=13807, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:38:42,804 INFO L87 Difference]: Start difference. First operand 238 states and 239 transitions. Second operand 119 states. Received shutdown request... [2018-07-23 15:38:42,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:38:42,952 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 15:38:42,959 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 15:38:42,959 INFO L202 PluginConnector]: Adding new model doubleLoopUniformIterations.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:38:42 BoogieIcfgContainer [2018-07-23 15:38:42,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:38:42,960 INFO L168 Benchmark]: Toolchain (without parser) took 253103.40 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -462.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-23 15:38:42,961 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:38:42,961 INFO L168 Benchmark]: Boogie Preprocessor took 59.51 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:38:42,962 INFO L168 Benchmark]: RCFGBuilder took 264.22 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. [2018-07-23 15:38:42,962 INFO L168 Benchmark]: TraceAbstraction took 252773.96 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -473.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-23 15:38:42,964 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 0.21 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 59.51 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 264.22 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 252773.96 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -473.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 23). Cancelled while BasicCegarLoop was constructing difference of abstraction (238states) and interpolant automaton (currently 28 states, 119 states before enhancement), while ReachableStatesComputation was computing reachable states (26 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 24]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 24). Cancelled while BasicCegarLoop was constructing difference of abstraction (238states) and interpolant automaton (currently 28 states, 119 states before enhancement), while ReachableStatesComputation was computing reachable states (26 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. TIMEOUT Result, 252.6s OverallTime, 349 OverallIterations, 116 TraceHistogramMax, 129.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1395 SDtfs, 3907 SDslu, 24154 SDs, 0 SdLazy, 1234401 SolverSat, 7597 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 45.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41063 GetRequests, 20241 SyntacticMatches, 116 SemanticMatches, 20706 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13340 ImplicationChecksByTransitivity, 44.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=346, 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: 34.6s AutomataMinimizationTime, 348 MinimizatonAttempts, 6670 StatesRemovedByMinimization, 115 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 24.1s SatisfiabilityAnalysisTime, 56.4s InterpolantComputationTime, 42227 NumberOfCodeBlocks, 42227 NumberOfCodeBlocksAsserted, 349 NumberOfCheckSat, 41878 ConstructedInterpolants, 0 QuantifiedInterpolants, 28590762 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 349 InterpolantComputations, 3 PerfectInterpolantSequences, 533831/1587923 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/doubleLoopUniformIterations.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-38-42-975.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/doubleLoopUniformIterations.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-38-42-975.csv Completed graceful shutdown